LM25007
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SNVS401C –JANUARY 2006–REVISED FEBRUARY 2013
LM25007 42V, 0.5A Step-Down Switching Regulator
Check for Samples: LM25007
1FEATURES DESCRIPTION
The LM25007 is a monolithic step-down switching
2• Integrated 0.74ΩN-Channel MOSFET Switch regulator featuring all of the functions needed to
• Guaranteed 0.5A Output Current implement a low cost, efficient, power supply.
• Ultra-Fast Transient Response Capable of driving a 0.5A load over a 9V-42V input
voltage range, this device is easy to apply and is
• Up to 800kHz Operation provided in the small VSSOP-8 and the thermally
• No Control Loop Compensation Required enhanced WSON-8 packages. Ultra-fast transient
• Vin Feed Forward Provides Constant response is achieved through the use of a constant
Operating Frequency on-time architecture with Vin feed forward. This
feature provides an almost constant operating
• 2% Accurate 2.5V Feedback from -40°C to frequency over load and input voltage variations. The
125°C operating frequency can be adjusted with a single
• Highly Efficient Operation resistor. This architecture is easy to use and tolerant
• Intelligent Current Limit Protection of component selection. An intelligent current limit is
implemented in the LM25007 with forced off time that
• External Shutdown Control is inversely proportional to Vout thus ensuring
• Thermal Shutdown recovery from fault conditions. The output voltage
• VSSOP and Thermally Enhanced WSON may be set from 2.5V to >30V. To improve efficiency
Packages in light load applications, the Vcc pin can be
connected to an external voltage source to eliminate
the drop through the internal regulator. Additional
TYPICAL APPLICATIONS features include: thermal shutdown, Vcc under-
• 12VDC and 24VDC Distributed Rail Systems voltage lockout, gate drive under-voltage lockout, and
• 24VAC Systems max duty cycle limiter.
• Automotive Body Electronics and Telematics
• Industrial Systems
• HB-LED Constant Current Source
• Package:
– VSSOP-8
– WSON-8 (4mm x 4mm)
1Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Copyright © 2006–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
1
2
3
4 5
6
7
8
SW
BST
RCL
FB
RTN
RON
VCC
VIN
FB
VIN
SW
RTN
BST
L1
C2
R3
R4
C4
C3
Input
LM25007
D1 R5
8
6
5
3
4
1
2
7
SHUTDOWN
GND
RCL
VCC
C5
GND
9V ± 42V
RON/SD
RCL
RON
VOUT
C1
LM25007
SNVS401C –JANUARY 2006–REVISED FEBRUARY 2013
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Basic Step-Down Regulator
Connection Diagram
8-Lead VSSOP, WSON
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FB
VIN
VCC
SW
RTN
ON TIMER
DRIVER
VIN
BST
LEVEL
SHIFT
SD/
RON
2.5V
THERMAL
SHUTDOWN
0.725A
BUCK
SWITCH
CURRENT
SENSE
COMPLETE
RCL START
RCL
COMPLETE
START
Ron
100 PH
L1
C2
15 PF
R3
3.01k
R4
1k
R2
100k
RON
200k
C4
0.01 PF
C3
0.1 PF
12V -42V
10V
LM25007
UVLO
FB R5
1
UVLO
REGULATION
COMPARATOR
OVER-VOLTAGE
COMPARATOR
2.875V
SD
SD
COMPLETE
START
MINIMUM OFF
TIMER
C1
1 PF
8
6
5
3
4
1
2
7
7V SERIES
REGULATOR
CURRENT LIMIT
OFF TIMER
SHUTDOWN
C5
0.1 PF,
100V
D1
Q
CLR
Q
SET
S
R
+
-
+
-
+
-
LM25007
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SNVS401C –JANUARY 2006–REVISED FEBRUARY 2013
Pin Descriptions
Pin Name Description Application Information
1 SW Switching Node Power switching node. Connect to the inductor, bootstrap capacitor, and free-wheeling
diode.
2 BST Boost Boot–strap An external capacitor is required between the BST and the SW pins. A 0.01µF ceramic
capacitor input capacitor is recommended.
3 RCL Current Limit OFF time A resistor between this pin and RTN sets the off-time when current limit is detected.
programming pin The off-time is preset to 17 µs if FB = 0V .
4 RTN Circuit Ground
5 FB Feedback Signal from This pin is connected to the inverting input of the internal regulation comparator. The
Regulated Output regulation threshold is 2.5V.
6 RON/SD On-time set pin A resistor between this pin and VIN sets the switch on-time as a function of Vin. The
minimum recommended on-time is 300ns at the maximum input voltage.
7 VCC Output from the internal If an auxiliary voltage is available to raise the voltage on this pin above the regulation
high voltage bias setpoint (7V), the internal series pass regulator will shutdown, reducing the IC power
regulator. dissipation. Do not exceed 14V. This output provides gate drive power for the internal
Buck switch. An internal diode is provided between this pin and the BST pin. A local
0.1uF decoupling capacitor is recommended.
8 VIN Input supply voltage Recommended operating range: 9V to 42V.
- EP Exposed pad, underside Exposed metal pad on the WSON package underside. It is recommended to connect
of the WSON package this pad to the PC board ground plane to aid in heat dissipation.
option
Typical Application Circuit and Block Diagram
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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings(1)
VIN to RTN 45V
BST to RTN 59V
SW to RTN (Steady State) -1V
ESD Rating, Human Body Model(2) 2kV
BST to VCC 45V
BST to SW 14V
VCC to RTN 14V
All Other Inputs to RTN -0.3 to 7V
Storage Temperature Range -65°C to +150°C
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which
operation of the device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
(2) The human body model is a 100pF capacitor discharge through a 1.5kΩresistor into each pin. The human body ESD compliance level
for Pin 7 and 8 is 1000V.
Operating Ratings(1)
VIN 9V to 42V
Junction Temperature −40°C to + 125°C
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which
operation of the device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
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SNVS401C –JANUARY 2006–REVISED FEBRUARY 2013
Electrical Characteristics(1)
Specifications with standard type are for TJ= 25°C only; limits in boldface type apply over the full Operating Junction
Temperature (TJ) range. Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical
values represent the most likely parametric norm at TJ= 25°C, and are provided for reference purposes only. Unless
otherwise stated the following conditions apply: VIN = 24V, RON = 200kΩ. .
Symbol Parameter Conditions Min Typ Max Unit
Startup Regulator
VCC Reg VCC Regulator Output 6.6 77.4 V
VCC Current Limit (2) 11 mA
VCC Supply
VCC undervoltage Lockout Voltage 6.3 V
(VCC increasing)
VCC Undervoltage Hysteresis 206 mV
VCC UVLO Delay (filter) 3 µs
Operating Current (ICC) Non-Switching, FB = 3V 500 675 µA
Shutdown/Standby Current RON/SD = 0V 70 150 µA
Switch Characteristics
Buck Switch Rds(on) ITEST = 200mA, 0.74 1.34 Ω
VBST −VSW = 6.3V(3)
Gate Drive UVLO (VBST – VSW) Rising 3.4 4.5 5.5 V
Gate Drive UVLO Hysteresis 400 mV
Current Limit
Current Limit Threshold 535 725 900 mA
Current Limit Response Time Iswitch Overdrive = 0.1A Time to 225 ns
Switch Off
OFF time generator (test 1) FB=0V, RCL = 100K 17 µs
OFF time generator (test 2) FB=2.3V, RCL = 100K 2.65 µs
On Time Generator
TON -1 Vin = 10V 2.15 2.77 3.5 µs
Ron = 200K
TON -2 Vin = 40V 450 615 810 ns
Ron = 200K
Remote Shutdown Threshold Rising 0.45 0.7 1.1 V
Remote Shutdown Hysteresis 40 mV
Minimum Off Time
Minimum Off Timer FB = 0V 300 ns
Regulation and OV Comparators
FB Reference Threshold Internal reference 2.445 2.5 2.550 V
Trip point for switch ON
FB Over-Voltage Threshold Trip point for switch OFF 2.875 V
FB Bias Current 100 nA
Thermal Shutdown
Tsd Thermal Shutdown Temp. 165 °C
Thermal Shutdown Hysteresis 25 °C
Thermal Resistance
θJA Junction to Ambient DGK Package 200 °C/W
NGT Package 40 °C/W
(1) All limits are guaranteed. All electrical characteristics having room temperature limits are tested during production with TA= TJ= 25°C.
All hot and cold limits are guaranteed by correlating the electrical characteristics to process and temperature variations and applying
statistical process control.
(2) The VCC output is intended as a self bias for the internal gate drive power and control circuits. Device thermal limitations limit external
loading.
(3) For devices procured in the WSON-8 package the Rds(on) limits are guaranteed by design characterization data only.
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ON-TIME (ns)
100
1000
10000
020
INPUT VOLTAGE VIN (V)
4230
10
RON = 300k
200k
100k
0 0.5 1 1.5 2 2.5
0
2
4
6
8
10
12
14
16
18
20
VFB (V)
TOFF (Ps)
600k
400k 200k
100k 50k
0 100 200 300 400 500
70
80
90
100
EFFICIENCY (%)
LOAD CURRENT (mA)
VIN = 15V
30V
42V
LM25007
SNVS401C –JANUARY 2006–REVISED FEBRUARY 2013
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Typical Performance Characteristics
Operational Waveforms Operational Waveforms
LM25007 Operation: VOUT = 10V, VIN = 20V, IOUT = 250mA LM25007 Operation: VOUT = 10V, VIN = 42V, IOUT = 250mA
CH1: Switch Node, CH2: VOUT (AC), CH4: Inductor Current CH1: Switch Node, CH2: VOUT (AC), CH4: Inductor Current
Figure 1. Figure 2.
Current Limit Off-Time
LM25007 10V Output Efficiency vs VFB
Figure 3. Figure 4.
VIN
vs TON
RON = 100k, 200k, 300k
Figure 5.
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F = VOUT
1.42 x 10-10 x RON
F = VOUT2 x L
1 x 10-20 x RLoad x (RON)2
LM25007
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SNVS401C –JANUARY 2006–REVISED FEBRUARY 2013
DETAILED OPERATING DESCRIPTION
The LM25007 is a monolithic step-down switching regulator featuring all of the functions needed to implement
low cost, efficient, power supply. Capable of driving a 0.5Amp load over a 9-42V input voltage range, this device
is easy to apply and is provided in the small VSSOP-8 and the thermally enhanced WSON-8 packages. Ultra-fast
transient response is achieved through the use of a constant on-time architecture with Vin feed forward. This
feature provides and almost constant operating frequency over load and input voltage variations. The operating
frequency may be adjusted up to 800kHz depending on input and output voltages. This architecture is easy to
use and tolerant of component selection. An intelligent current limit is implemented in the LM25007 with forced
off time that is inversely proportional to Vout to ensure recovery from fault conditions. The output voltage may be
set from 2.5V to >30V. To improve efficiency in light load applications, the Vcc pin can be tied to an external
voltage source thus eliminating the drop through the integrated internal regulator. Additional protection features
include: thermal shutdown, Vcc under-voltage lockout, gate drive under-voltage lockout, and max duty cycle
limiter.
Hysteretic Control Circuit Overview
The LM25007 is a Buck DC-DC regulator that uses a constant on-time control scheme. The on-time is
programmed by an external resistor and varies inversely with line input voltage (Vin). The core regulation
elements of the LM25007 are the feedback comparator and the on-time one-shot. The regulator output voltage is
sensed at the feedback pin (FB) and is compared to an internal reference voltage (2.5V). If the FB signal is
below the reference voltage, the buck switch is turned on for a fixed time pulse determined by the line voltage
and a programming resistor (RON). Following the on period the switch will remain off for at least the minimum off
timer period of 300ns. If the FB pin voltage is still below the reference after the 300ns off-time, the switch will turn
on again for another on time period. This switching behavior will continue until the FB pin voltage reaches the
reference voltage level.
The LM25007 operates in discontinuous conduction mode at light load currents or continuous conduction mode
at heavier load currents. In discontinuous conduction mode, current through the output inductor starts at zero and
ramps up to a peak value during the buck switch on-time and then back to zero during the off-time. The inductor
current remains at zero until the next on-time period starts when FB falls below the internal reference. In
discontinuous mode the operating frequency is relatively low and will vary with load. Therefore at light loads the
conversion efficiency is maintained, since the switching losses decrease with the reduction in load current and
switching frequency. The approximate discontinuous mode operating frequency can be calculated as follows:
(1)
In continuous conduction mode, current flows continuously through the inductor and never ramps down to zero.
In this mode the operating frequency is greater than the discontinuous mode frequency and remains relatively
constant with load and line variations. The approximate continuous mode operating frequency can be calculated
as follows:
(2)
The output voltage (Vout) can be programmed by two external resistors as shown in Figure 6. The regulated
voltage is calculated as follows:
VOUT = 2.5 x (R3 + R4) / R4 (3)
The feedback comparator in hysteretic regulators depends on the output ripple voltage to switch the output
transistor on and off at regular intervals. In order for the internal comparator to respond quickly to changes in
output voltage, proportional to inductor current, a minimum amount of capacitor Equivalent Series Resistance
(ESR) is required. A ripple voltage of 25mV is recommended at the feedback pin (FB) for stable operation. In
cases where the intrinsic capacitor ESR is too small, additional series resistance may be added.
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+
-
+
FB
REF
2.5V
SW L
R3
R4
R5
VIN
LM25007
COUT
VOUT
LM25007
SNVS401C –JANUARY 2006–REVISED FEBRUARY 2013
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For applications where lower output voltage ripple is required the load can be connected directly to the low ESR
output capacitor, as shown in Figure 6. The series resistor (R5) will degrade the load regulation. Another
technique for enhancing the ripple voltage at the FB pin is to place a capacitor in parallel with the feedback
divider resistor R3. The addition of the capacitor reduces the attenuation of the ripple voltage from the feedback
divider.
High Voltage Bias Regulator (VCC)
The LM25007 contains an internal high voltage bias regulator. The input pin (Vin) can be connected directly to
line voltages from 9 to 42 Volts. To avoid supply voltage transients due to long lead inductances on the input pin
(VIN), it is always recommended to connect a low ESR ceramic chip capacitor (≊0.1µF) between VIN and RTN
pins located close to the LM25007. The regulator is internally current limited to 11mA. Upon power up, the
regulator is enabled and sources current into an external capacitor connected to the VCC pin. When the voltage
on the VCC pin reaches its UVLO level (6.3V), the controller output is enabled.
An external auxiliary supply voltage can be diode connected to the Vcc pin. If the auxiliary voltage is greater than
7 Volts the internal regulator will shutoff, thus reducing internal power dissipation. Do not exceed 14V at VCC.
See Figure 7.
Figure 6. Low Ripple Output Configuration
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SNVS401C –JANUARY 2006–REVISED FEBRUARY 2013
Figure 7. Self Biased Configuration
Over-Voltage Comparator
The over-voltage comparator is provided to protect the output from overvoltage conditions due to sudden input
line voltage changes or output loading changes. The over-voltage comparator monitors the FB pin versus an
internal 2.875V reference. If the voltage at FB rises above 2.875V the comparator immediately terminates the
buck switch on-time pulse.
ON Time generator and Shutdown
The on-time of the LM25007 is set inversely proportional to the input voltage by an external resistor connected
between RON/SD and VIN. The RON/SD terminal is a low impedance input biased at approximately 1.5V. The
current through the resistor and into the RON/SD pin is approximately proportional to Vin and used internally to
control the on-timer. This scheme of input voltage feed-forward hysteretic operation achieves nearly constant
operational frequency over varying line and load conditions. The on-time equation for the LM25007 is :
Ton = 1.42 x 10-10 x RON / VIN (4)
The RON/SD pin of the LM25007 also provides a shutdown function which disables the regulator and
significantly decreases quiescent power dissipation. By pulling the pin below 0.7V activates the low power
shutdown mode. The VIN quiescent current in the shutdown mode is approximately 100µA internal to the
LM25007 plus the current in the RON resistor. See Figure 8.
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VIN VIN
RON
RON/SD
7V SERIES
REGULATOR
ON TIMER
VIN
START
COMPLETE
RON
STOP
RUN LM25007
LM25007
SNVS401C –JANUARY 2006–REVISED FEBRUARY 2013
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Figure 8. Shutdown Implementation
Current Limit
The LM25007 contains an intelligent current limit off-timer intended to reduce the foldback characteristic inherent
with fixed off-time over-current protection. If the current in the Buck switch exceeds 725mA the present cycle on-
time is immediately terminated (cycle by cycle current limit). Following the termination of the cycle a non-
resetable current limit off timer is initiated. The duration of the off time is a function of the external resistor (RCL)
and the FB pin voltage. When the FB pin voltage equals zero, the current limit off-time is internally preset to
17µs. This condition occurs in short circuit operation when a maximum amount of off-time is required.
In cases of overload (not complete short circuit) the current limit off-time is reduced as a function of the output
voltage (measured at the FB pin). Reducing the off-time with smaller overloads reduces the amount of foldback
and also reduces the initial start-up time. The current limit off time for a given FB pin voltage and RCL resistor can
be calculated by the following equation:
Toff = 10-5 / (0.59 + (VFB / 7.22 x 10-6 x RCL)) (5)
Applications utilizing low resistance inductors and/or a low voltage drop rectifier may require special evaluation at
high line, short circuit conditions. In this special case the preset 17µs (FB = 0V) off-time may be insufficient to
balance the inductor volt*time product. Additional inductor resistance, output resistance or a larger voltage drop
rectifier may be necessary to balance the inductor cycle volt*time product and limit the short circuit current.
N - Channel Buck Switch and Driver
The LM25007 integrates an N-Channel Buck switch and associated floating high voltage gate driver. The gate
driver circuit works in conjunction with an external bootstrap capacitor and an internal high voltage diode. The
bootstrap capacitor is charged by VCC through the internal high voltage diode. A 0.01uF ceramic capacitor
connected between the BST pin and SW pin is recommended.
During each cycle when the Buck switch turns off, the SW pin is approximately 0V. When the SW pin voltage is
low, the bootstrap capacitor is charged from Vcc through the internal diode. The minimum off timer, set to 300ns,
ensures that there will be a minimum interval every cycle to recharge the bootstrap capacitor.
An external re-circulating diode from the SW pin to ground is necessary to carry the inductor current after the
internal Buck switch turns off. This external diode must be of the Ultra-fast or Schottky type to reduce turn-on
losses and current over-shoot. The reverse voltage rating of the re-circulating diode must be greater than the
maximum line input voltage.
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SNVS401C –JANUARY 2006–REVISED FEBRUARY 2013
Thermal Protection
Internal Thermal Shutdown circuitry is provided to protect the integrated circuit in the event the maximum junction
temperature is exceeded. When thermal protection is activated, typically at 165 degrees Celsius, the controller is
forced into a low power reset state, disabling the output driver. This feature is provided to prevent catastrophic
failures from accidental device overheating.
Minimum Load Current
A minimum load current of 1 mA is required to maintain proper operation. If the load current falls below that level,
the bootstrap capacitor may discharge during the long off-time, and the circuitwill either shutdown, or cycle on
and off at a low frequency. If the load current is expected to drop below 1 mA in the application, the feedback
resistors should be chosen low enough in value so they provide the minimum required current at nominal Vout.
10V, 400mA Demo Board Bill of Materials
See Typical Application Circuit and Block Diagram
Table 1. Bill of Materials
ITEM PART NUMBER DESCRIPTION VALUE
C1 C4532X7R2A105M CAPACITOR, CER, TDK 1µ, 100V
C2 C4532X7R1E156M CAPACITOR, CER, TDK 15µ, 25V
C3 C1206C104K5RAC CAPACITOR, CER, KEMET 0.1µ, 50V
C4 C1206C103K5RAC CAPACITOR, CER, KEMET 0.01µ, 50V
C5 C3216X7R2A104KT CAPACITOR, CER, TDK 0.1µ, 100V
D1 MURA110T3 DIODE, 100V, ON SEMI
L1 SLF7045T-101MR60-1 BUCK INDUCTOR, TDK 100µH
R1 CRCW12062003F RESISTOR 200K
R2 CRCW12061003F RESISTOR 100K
R3 CRCW12063011F RESISTOR 3.01K
R4 CRCW12061001F RESISTOR 1K
R5 CRCW12061R00F RESISTOR 1
U1 LM25007 REGULATOR, TI
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REVISION HISTORY
Changes from Revision B (February 2013) to Revision C Page
• Changed layout of National Data Sheet to TI format .......................................................................................................... 11
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PACKAGE OPTION ADDENDUM
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Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status
(1)
Package Type Package
Drawing Pins Package
Qty Eco Plan
(2)
Lead/Ball Finish
(6)
MSL Peak Temp
(3)
Op Temp (°C) Device Marking
(4/5)
Samples
LM25007MM NRND VSSOP DGK 8 1000 TBD Call TI Call TI -40 to 125 SLYB
LM25007MM/NOPB ACTIVE VSSOP DGK 8 1000 Green (RoHS
& no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 SLYB
LM25007MMX/NOPB ACTIVE VSSOP DGK 8 3500 Green (RoHS
& no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 SLYB
LM25007SD/NOPB ACTIVE WSON NGT 8 1000 Green (RoHS
& no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 25007SD
LM25007SDX/NOPB ACTIVE WSON NGT 8 4500 Green (RoHS
& no Sb/Br) SN Level-1-260C-UNLIM -40 to 125 25007SD
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
PACKAGE OPTION ADDENDUM
www.ti.com 6-Feb-2020
Addendum-Page 2
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
LM25007MM VSSOP DGK 8 1000 178.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1
LM25007MM/NOPB VSSOP DGK 8 1000 178.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1
LM25007MMX/NOPB VSSOP DGK 8 3500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1
LM25007SD/NOPB WSON NGT 8 1000 178.0 12.4 4.3 4.3 1.3 8.0 12.0 Q1
LM25007SDX/NOPB WSON NGT 8 4500 330.0 12.4 4.3 4.3 1.3 8.0 12.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 29-Sep-2019
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
LM25007MM VSSOP DGK 8 1000 210.0 185.0 35.0
LM25007MM/NOPB VSSOP DGK 8 1000 210.0 185.0 35.0
LM25007MMX/NOPB VSSOP DGK 8 3500 367.0 367.0 35.0
LM25007SD/NOPB WSON NGT 8 1000 210.0 185.0 35.0
LM25007SDX/NOPB WSON NGT 8 4500 367.0 367.0 35.0
PACKAGE MATERIALS INFORMATION
www.ti.com 29-Sep-2019
Pack Materials-Page 2
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PACKAGE OUTLINE
C
8X 0.35
0.25
3 0.05
2X
2.4
2.6 0.05
6X 0.8
0.8 MAX
0.05
0.00
8X 0.5
0.3
A4.1
3.9 B
4.1
3.9
(0.2) TYP
WSON - 0.8 mm max heightNGT0008A
PLASTIC SMALL OUTLINE - NO LEAD
4214935/A 08/2020
PIN 1 INDEX AREA
SEATING PLANE
0.08 C
1
45
8
PIN 1 ID 0.1 C A B
0.05 C
THERMAL PAD
EXPOSED
SYMM
SYMM
9
NOTES:
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing
per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. The package thermal pad must be soldered to the printed circuit board for thermal and mechanical performance.
SCALE 3.000
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EXAMPLE BOARD LAYOUT
0.07 MIN
ALL AROUND
0.07 MAX
ALL AROUND
8X (0.3)
(3)
(3.8)
6X (0.8)
(2.6)
( 0.2) VIA
TYP (1.05)
(1.25)
8X (0.6)
(R0.05) TYP
WSON - 0.8 mm max heightNGT0008A
PLASTIC SMALL OUTLINE - NO LEAD
4214935/A 08/2020
SYMM
1
45
8
LAND PATTERN EXAMPLE
EXPOSED METAL SHOWN
SCALE:15X
SYMM 9
NOTES: (continued)
4. This package is designed to be soldered to a thermal pad on the board. For more information, see Texas Instruments literature
number SLUA271 (www.ti.com/lit/slua271).
5. Vias are optional depending on application, refer to device data sheet. If any vias are implemented, refer to their locations shown
on this view. It is recommended that vias under paste be filled, plugged or tented.
SOLDER MASK
OPENING
SOLDER MASK
METAL UNDER
SOLDER MASK
DEFINED
EXPOSED
METAL
METAL
SOLDER MASK
OPENING
SOLDER MASK DETAILS
NON SOLDER MASK
DEFINED
(PREFERRED)
EXPOSED
METAL
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EXAMPLE STENCIL DESIGN
(R0.05) TYP
(1.31)
(0.675)
8X (0.3)
8X (0.6)
(1.15)
(3.8)
(0.755)
6X (0.8)
WSON - 0.8 mm max heightNGT0008A
PLASTIC SMALL OUTLINE - NO LEAD
4214935/A 08/2020
NOTES: (continued)
6. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate
design recommendations.
SOLDER PASTE EXAMPLE
BASED ON 0.125 mm THICK STENCIL
EXPOSED PAD 9:
77% PRINTED SOLDER COVERAGE BY AREA UNDER PACKAGE
SCALE:20X
SYMM
1
45
8
METAL
TYP
SYMM 9
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