TPS75201-Q1_16 Datasheet, PDF (1/35 Pages) Texas Instruments – POWER GOOD FAST-TRANSIENT-RESPONSE 2-A LOW-DROPOUT VOLTAGE REGULATORS

TPS75201ĆQ1, '75215ĆQ1, '75218ĆQ1, '75225ĆQ1, '75233ĆQ1 WITH RESET
TPS75401ĆQ1, '75415ĆQ1, '75418ĆQ1, '75425ĆQ1, '75433ĆQ1 WITH POWER GOOD
FASTĆTRANSIENTĆRESPONSE 2ĆA LOWĆDROPOUT VOLTAGE REGULATORS
SGLS166C − APRIL 2003 – REVISED APRIL 2008
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 2-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-On Reset With 100-ms
Delay (TPS752xx)
D Open Drain Power-Good (PG) Status
Output (TPS754xx)
D Dropout Voltage Typically 210 mV at 2 A
(TPS75233)
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
GND/HEATSINK
NC
IN
IN
EN
RESETor PG^‡
FB/SENSE
OUTPUT
OUTPUT
GND/HEATSINK
PWP PACKAGE
(TOP VIEW)
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
GND/HEATSINK
NC
NC
GND
NC
NC
NC
NC
NC
GND/HEATSINK
NC − No internal connection
‡ _{PG is on the TPS754xx and RESET is on the TPS752xx}
description
The TPS752xx and TPS754xx are low-dropout regulators with integrated power-on reset and power good (PG)
functions, respectively. These devices are capable of supplying 2 A of output current with a dropout of 210 mV
(TPS75233, TPS75433). Quiescent current is 75 µA at full load and drops down to 1 µA when the device is disabled.
TPS752xx and TPS754xx 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 210 mV at an
output current of 2 A for the TPS75x33) 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 2 A). These two key specifications yield a significant
improvement in operating life for battery-powered systems.
The device is enabled when the EN pin is connected to a low-level input 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 1 µA at T_J = 25°C.
The RESET (SVS, POR, or power on reset) output of the TPS752xx initiates a reset in microcomputer and
microprocessor systems in the event of an undervoltage condition. An internal comparator in the TPS752xx
monitors the output voltage of the regulator to detect an undervoltage condition on the regulated output voltage.
When the output reaches 95% of its regulated voltage, RESET goes to a high-impedance state after a 100-ms delay.
RESET goes to a logic-low state when the regulated output voltage is pulled below 95% (i.e., over load condition)
of its regulated voltage.
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.
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.
Copyright  2008, Texas Instruments Incorporated
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