TPS76501-Q1 Datasheet, PDF (1/21 Pages) Texas Instruments – ULTRALOW QUIESCENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATOR

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TPS76501-Q1
ULTRALOW QUIESCENT CURRENT 150-mA LOW-DROPOUT
VOLTAGE REGULATOR
SLVS800 – DECEMBER 2007
FEATURES
1
• Qualified for Automotive Applications
• 150-mA Low-Dropout (LDO) Voltage Regulator
• Dropout Voltage to 85 mV (Typ) at 150 mA
(TPS76550)
• Ultra-Low 35-µA (Typ) Quiescent Current
• 3% Tolerance Over Specified Conditions for
Fixed-Output Versions
• Open-Drain Power Good Output
• Thermal Shutdown Protection
FB
PG
GND
EN
D PACKAGE
(TOP VIEW)
1
8
2
7
3
6
4
5
OUT
OUT
IN
IN
DESCRIPTION/ORDERING INFORMATION
This device is designed to have an ultra-low quiescent current and be stable with a 4.7-µF capacitor. This
combination provides high performance at a reasonable cost.
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 85 mV at
an output current of 150 mA for the TPS76550) 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 35 µA over the full range of output current, 0 mA to 150 mA). These two key
specifications yield a significant improvement in operating life for battery-powered systems. This LDO 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 (typ).
Power good (PG) is an active-high output, which can be used to implement a power-on reset or a low-battery
indicator.
TPS76533
DROPOUT VOLTAGE
vs
FREE-AIR TEMPERATURE
10⁰
V_I = 3.2 V
10^−1
I_O = 150 mA
I_O = 50 mA
TPS76533
GROUND CURRENT
vs
LOAD CURRENT
35.0
V_O = 3.3 V
34.9 ^TA ^{= 25°C}
34.8
34.7
34.6
34.5
10^−2
I_O = 10 mA
34.4
34.3
10^−3
−50 −25 0
25 50 75 100 125 150
T_A − Free-Air Temperature − °C
34.2
34.1
34.0
0
25
50
75
100 125 150
I_L − Load Current − mA
1
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated