SGLS159A − APRIL 2003 − REVISED APRIL 2008
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D Qualified for Automotive Applications
D ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D 1.5-A Low-Dropout Voltage Regulator
D Available in 1.5-V, 1.8-V, 2.5-V, 3.3-V, Fixed
Output and Adjustable Versions
D Open Drain Power-Good (PG) Status
Output (TPS751xxQ)
D Open Drain Power-On Reset With 100-ms
Delay (TPS753xxQ)
D Dropout Voltage Typically 160 mV at 1.5 A
(TPS75133Q)
D Ultralow 75 µA Typical Quiescent Current
D Fast Transient Response
D 2% Tolerance Over Specified Conditions
For Fixed-Output Versions
D 20-Pin TSSOP (PWP) PowerPAD Package
D Thermal Shutdown Protection
description
The TPS753xxQ and TPS751xxQ are low dropout regulators with integrated power-on reset and power-good (PG)
functions respectively. These devices are capable of supplying 1.5 A of output current with a dropout of 160 mV
(TPS75133Q, TPS75333Q). Quiescent current is 75 µA at full load and drops down to 1 µA when the device is
disabled. TPS751xxQ and TPS753xxQ are designed to have fast transient response for larger load current
changes.
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 160 mV at an
output current of 1.5 A for the TPS75x33Q) 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 75 µA over the full range of output current, 1 mA to 1.5 A). These two key specifications yield a significant
improvement in operating life for battery-powered systems.
The device is enabled when EN
is connected to a low level voltage. 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 less than 1
µA at T
J
= 25°C.
For the TPS751xxQ, the power-good terminal (PG) is an active high, open drain output, which can be used to
implement a power-on reset or a low-battery indicator.
Copyright 2008, Texas Instruments Incorporated
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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.
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20
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(TOP VIEW)
GND/HEATSINK
NC
IN
IN
EN
PG or RESET
†
FB/SENSE
OUTPUT
OUTPUT
GND/HEATSINK
GND/HEATSIN
NC
NC
GND
NC
NC
NC
NC
NC
GND/HEATSIN
NC − No internal connection
†
PG is on the TPS751xx and RESET
is on the TPS753xx
