SC15A SERIES
HDLV
Family
Description
The SC15A is a low-cost, 15-amp, non-isolated DC-DC converter with an
amazingly small footprint of only 0.8 in2. Designed for today's high power
microprocessors, the SC15A accepts either 5 V or 3.3 V inputs and offers
outputs from 1.3 V to 3.3 V. The SC15A also uses an industry-standard
pin-out making it easy to increase power in existing designs.
Using Bourns Switch Power's proprietary V2TM
architecture, the SC15A
provides ultrafast transient response, improved line and load regulation, and
very high efficiency. It also incorporates short-circuit protection, Enable /
Disable control, output voltage trim, and remote sense.
Features
• Low Cost
• 15-amp Output Current
• 90 % Efficiency
• Industry-standard Pin-out
• Low 0.6 " Profile
• Non-isolated Output
• Remote Sense
• Trim Function
• Enable / Disable
• Short-circuit Protection
• Fast Transient Response
• High-temperature
Operation
• Output Precharge
Capability
Patents 5,770,940
5,978,195
6,127,814
Common Specifications
Min Nom Max Units Notes
Input
Voltage 4.5 5 5.5 Vdc 4.75 Vin Startup
3.0 3.3 3.6 Vdc
Current 15 A
Control Voltage
High = Disable 2.4 Vdc Source 500 mA
Low = Enable 0.4 Vdc Open=Enable
E/D Current 1 mA
Output
Current 15 A
Voltage Setpoint Accuracy ±2 %Vnom
Voltage Trim Range -10 +10 %Vnom
Line Regulation ±0.1 %Vnom
Load Regulation ±0.3 %Vnom
Current Limit 18 21 30 A
Dynamic Response
0 to 15 A load 200 mV ∆i/∆t = 3 A/µs
19 µs
15 to 0 A load 200 mV ∆i/∆t = 3 A/µs
19 µs
Temperature Regulation ±0.02 %Vout/°C
General
MTBF 1,000 k Hrs Bellcore TR332, 25 °C
Operating Temperature -25 85 °C
-40 85 °C Optional
Storage Temperature -40 125 °C
Switching Frequency 200 300 400 kHz
Reliable Electronic Solutions
Asia-Pacific:
Europe:
The Americas:
www.bourns.com
TEL +886- (0)2 25624117 • FAX +886- (0)2 25624116
TEL +41-41 768 5555 • FAX +41-41 768 5510
TEL +1-951 781 5500 • FAX +1-951 781-5700
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
SC15A SERIES
HDLV
Family
1 2 3 4 5 6 7 8 9 10
3.00 (76.2)
0.60
(15.24)
1.400 (35.56)
0.100 (2.54)
0.65
(16.51)
0.135 ± .015
(3.43 ± 0.38)
inches (mm)
0.xx ±0.01 inches
0.xxx ±0.005 inches
Pin Description
1,2,4 Vout
3 Remote Sense
(removed for B option)
Pin Description
5,6 Ground
7,8 Vin
9 Trim
10 Enable
0.37 max
(9.4 max)
0.020 (0.51)
typ pin width
0.012 (0.30)
typ pin thickness
0.24
(6.1)
1.800 (45.72)
0.83
(21.08)
0.45
(11.43)
0.123 (3.12)
Note: Component placement may change. Recommended
keep-out area equals maximum length and width.
SC15A Trim Circuits
Trim
Gnd
Rup = 8.09
Vout - Vnom - 22 (in kΩ)
Rup
Vout
Rdown = 6.04 V
out
- 8.09
Vnom - Vout
-22 (in kΩ)
Rdown
Trim Up Trim Down
Trim
All outputs other than 1.5 V Vnom
Trim up when Vnom = 1.5 V
Rup = 3.176
Vout - Vnom
- 10 (in kΩ)
All outputs other than 1.5 V Vnom
Trim down when Vnom = 1.5 V
Rdown = 2.37Vout - 3.176
Vnom - Vout
-10 (in kΩ)
0
20
40
60
80
100
7060500-10-20 Ambient Temperature (C)
%Max Output
SC15A-5Sxx Temperature Derating
80 90
400 lfm
still air
0
20
40
60
80
100
7060500-10-20 Ambient Temperature (C)
%Max Output
SC15A-3Sxx Temperature Derating
80 90
400 lfm
still air
200 lfm
-40 -30
"-Z" Low
Temp
Option
"-Z" Low
Temp
Option
-30-40
Vin Vout
7 - Vin
8 - Vin
Vout - 1
Vout - 2
Vout - 4
Remote Sense - 3
56
10 9
Enable Trim
100 µf / 10 V 100 µf
10 V
SC15A
Electrical Specifications
Nominal Output Output Short-circuit Noise Efficiency
Input Voltage Current Current (A) (mV pp) (%)
(V) (V) (A) typ typ typ
SC15A-5S3.3 5 3.3 15 22 100
SC15A-5S2.5 5 2.5 15 22 100
SC15A-5S1.9 5 1.9 15 22 100 89
SC15A-5S1.8 5 1.8 15 22 100
SC15A-5S1.5 5 1.5 15 22 100
SC15A-3S2.5 3.3 2.5 15 22 100
SC15A-3S1.9 3.3 1.9 15 22 100 92
SC15A-3S1.8 3.3 1.8 15 22 100
SC15A-3S1.5 3.3 1.5 15 22 100
Standard Options
Add option designators to the end of the part number. Example; SC15A-5S3.3-B
Option Description
B No Remote Sense option removes sense pin
F 1 % Setpoint Accuracy
Z -40 °C Operation
X Modified pin length followed by three digits (in mils)
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
REV. 02/07