TPS71H33-Q1 Datasheet, PDF (1/41 Pages) Texas Instruments – LOW-DROPOUT VOLTAGE REGULATORS

TPS71H01ĆQ1, TPS71H33ĆQ1, TPS71H48ĆQ1, TPS71H50ĆQ1
LOWĆDROPOUT VOLTAGE REGULATORS
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 Available in 5-V, 4.85-V, and 3.3-V
GND/HEATSINK
GND/HEATSINK
GND
Fixed-Output and Adjustable Versions
NC
D Very Low-Dropout Voltage . . . Maximum of
EN
32 mV at I_O = 100 mA (TPS71H50)
D Very Low Quiescent Current − Independent
IN
IN
NC
of Load . . . 285 µA Typ
GND/HEATSINK
D Extremely Low Sleep-State Current
GND/HEATSINK
0.5 µA Max
D 2% Tolerance Over Specified Conditions
For Fixed-Output Versions
D Output Current Range of 0 mA to 500 mA
D TSSOP Package Option Offers Reduced
Component Height for Space-Critical
Applications
D Thermally Enhanced Surface-Mount
Package
D Power-Good (PG) Status Output
SGLS220A − DECEMBER 2003 − REVISED MAY 2008
PWP PACKAGE
(TOP VIEW)
1
20
GND/HEATSINK
2
19
GND/HEATSINK
3
18
NC
4
17
NC
5
16
PG
6
15
SENSE^†/FB^‡
7
14
OUT
8
13
OUT
9
12
GND/HEATSINK
10
11
GND/HEATSINK
PWP PACKAGE
(BOTTOM VIEW)
Thermal
Pad
description
The TPS71Hxx integrated circuits are a family
of micropower low-dropout (LDO) voltage
regulators. An order of magnitude reduction in
dropout voltage and quiescent current over
conventional LDO performance is achieved by
replacing the typical pnp pass transistor with a
PMOS device.
NC − No internal connection
† _{SENSE − Fixed voltage options only (TPS71H33,}
TPS71H48, and TPS71H50)
‡ _{FB − Adjustable version only (TPS71H01)}
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (maximum of 32 mV
at an output current of 100 mA for the TPS71H50) and is directly proportional to the output current (see
Figure 1). Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very
low and remains independent of output loading (typically 285 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. The LDO family also features a sleep mode; applying a TTL high signal to EN (enable) shuts down
the regulator, reducing the quiescent current to 0.5 µA maximum at T_J = 25°C.
Power good (PG) reports low output voltage and can be used to implement a power-on reset or a low-battery
indicator.
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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.
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