
1
FEATURES DESCRIPTION
APPLICATIONS
IN
IN
EN
GND
OUT
OUT
RESET/
PG
6
7
5
16
14
13
3
+10 Fm
COUT
(1)
RESET/PG
VOUT
VIN
0.1 Fm
TPS775xx, TPS776xx
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.............................................................................................................................................. SLVS232J – SEPTEMBER 1999 – REVISED MARCH 2009
TPS775xx with RESET Output, TPS776xx with PG OutputFAST-TRANSIENT-RESPONSE 500mA LOW-DROPOUT VOLTAGE REGULATORS
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•Open Drain Power-On Reset with 200ms Delay
The TPS775xx and TPS776xx devices are designed(TPS775xx)
to have a fast transient response and be stable with a10 µF low ESR capacitor. This combination provides•Open Drain Power Good (TPS776xx)
high performance at a reasonable cost.•500mA Low-Dropout Voltage Regulator
Because the PMOS device behaves as a low-value•Available in Fixed Output and Adjustable
resistor, the dropout voltage is very low (typicallyVersions
169mV at an output current of 500mA for the•Dropout Voltage to 169mV (Typ) at 500mA
TPS77x33) and is directly proportional to the output(TPS77x33)
current. Additionally, since the PMOS pass element isa voltage-driven device, the quiescent current is very•Ultralow 85 µA Typical Quiescent Current
low and independent of output loading (typically 85 µA•Fast Transient Response
over the full range of output current, 0mA to 500mA).•2% Tolerance Over Specified Conditions for
These two key specifications yield a significantFixed-Output Versions
improvement in operating life for battery-poweredsystems. This LDO family also features a sleep•8-Pin SOIC and 20-Pin TSSOP PowerPAD™
mode; applying a TTL high signal to EN (enable)(PWP) Packages
shuts down the regulator, reducing the quiescent•Thermal Shutdown Protection
current to 1 µA at T
J
= +25 ° C.
The RESET output of the TPS775xx initiates a resetin microcomputer and microprocessor systems in the•FPGA Power
event of an undervoltage condition. An internal•DSP Core and I/O Voltages
comparator in the TPS775xx monitors the outputvoltage of the regulator to detect an undervoltageTypical Application Circuit
condition on the regulated output voltage.(Fixed Voltage Options)
Power good (PG) of the TPS776xx is an active highoutput, which can be used to implement a power-onreset or a low-battery indicator.
The TPS775xx and TPS776xx are offered in 1.5V,1.6V (TPS77516 only), 1.8V, 2.5V, 2.8V (TPS77628only), and 3.3V fixed-voltage versions and in anadjustable version (programmable over the range of1.5V to 5.5V for the TPS77501 and 1.2V to 5.5V forthe TPS77601). Output voltage tolerance is specifiedas a maximum of 2% over line, load, and temperatureranges. The TPS775xx and TPS776xx families areavailable in 8-pin SOIC and 20-pin TSSOP packages.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2PowerPAD is a trademark of Texas Instruments.3All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 1999 – 2009, Texas Instruments IncorporatedProducts conform to specifications per the terms of the TexasInstruments standard warranty. Production processing does notnecessarily include testing of all parameters.