TPS77501ĆQ1, '515ĆQ1, '516ĆQ1, '518ĆQ1, '525ĆQ1, '533ĆQ1 WITH RESET OUTPUT
TPS77601ĆQ1, '77615ĆQ1, '77618ĆQ1, '77625ĆQ1, '77628ĆQ1, '77633ĆQ1 WITH PG OUTPUT
FASTĆTRANSIENTĆRESPONSE 500ĆmA LOWĆDROPOUT VOLTAGE REGULATORS
SGLS012B − MARCH 2003 − REVISED APRIL 2008
D Qualified for Automotive Applications
D ESD Protection Exceeds 2000 V Per
D
D
D
D
D
D
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
Open Drain Power-On Reset With 200-ms
Delay (TPS775xx)
Open Drain Power Good (TPS776xx)
500-mA Low-Dropout Voltage Regulator
Available in 1.5-V, 1.6-V (TPS77516 Only),
1.8-V, 2.5-V, 2.8-V (TPS77628 Only), 3.3-V
Fixed Output and Adjustable Versions
Dropout Voltage to 169 mV (Typ) at 500 mA
(TPS77x33)
Ultralow 85 µA Typical Quiescent Current
description
The TPS775xx and TPS776xx devices are designed
to have a fast transient response and be stable with
a 10-µF low ESR capacitors. This combination
provides high performance at a reasonable cost.
D Fast Transient Response
D 2% Tolerance Over Specified Conditions for
Fixed-Output Versions
D 20-Pin TSSOP PowerPAD (PWP) Package
D Thermal Shutdown Protection
PWP PACKAGE
(TOP VIEW)
GND/HSINK
GND/HSINK
GND
NC
EN
IN
IN
NC
GND/HSINK
GND/HSINK
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
GND/HSINK
GND/HSINK
NC
NC
RESET/PG
FB/NC
OUT
OUT
GND/HSINK
GND/HSINK
NC − No internal connection
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 169 mV
at an output current of 500 mA for the TPS77x33) and is directly proportional to the output current. Additionally,
since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent
of output loading (typically 85 µA over the full range of output current, 0 mA to 500 mA). These two key
specifications yield a significant improvement in operating life for battery-powered systems. This LDO family
also features a sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the
quiescent current to 1 µA at TJ = 25°C.
The RESET output of the TPS775xx initiates a reset in microcomputer and microprocessor systems in the event
of an undervoltage condition. An internal comparator in the TPS775xx monitors the output voltage of the
regulator to detect an undervoltage condition on the regulated output voltage.
Power good (PG) of the TPS776xx is an active high output, which can be used to implement a power-on reset
or a low-battery indicator.
The TPS775xx and TPS776xx are offered in 1.5-V, 1.6-V (TPS77516 only), 1.8-V, 2.5-V, 2.8 V (TPS77628 only),
and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.5 V to 5.5 V
for TPS77501 option and 1.2 V to 5.5 V for TPS77601 option). Output voltage tolerance is specified as a
maximum of 2% over line, load, and temperature ranges. The TPS775xx and TPS776xx families are available
in 20 pin TSSOP package.
Please 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.
PowerPAD is a trademark of Texas Instruments.
Copyright 2008, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
