Document
Obsolete Devices: TPS76501, TPS76525, TPS76528
TPS76515, TPS76518, TPS76525, TPS76527 TPS76528, TPS76530, TPS76533, TPS76550, TPS76501 ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
D 150-mA Low-Dropout Voltage Regulator D Available in 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V,
3.0-V, 3.3-V, 5.0-V Fixed Output and
Adjustable Versions
D Dropout Voltage to 85 mV (Typ) at 150 mA
(TPS76550)
D Ultra-Low 35-µA Typical Quiescent Current D 3% Tolerance Over Specified Conditions for
Fixed-Output Versions
D Open Drain Power Good D 8-Pin SOIC Package D Thermal Shutdown Protection
D PACKAGE (TOP VIEW)
NC/FB 1 PG 2
GND 3 EN 4
8 OUT 7 OUT 6 IN 5 IN
description
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 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 (typ).
TPS76533 DROPOUT VOLTAGE
vs FREE-AIR TEMPERATURE 10100 VI = 3.2 V
TPS76533
GROUND CURRENT vs
LOAD CURRENT
35.0 VO = 3.3 V
34.9 TA = 25°C
34.8
IO = 150 mA
10–1
34.7
IO = 50 mA
34.6
34.5
V DO – Output Voltage – V I GND – Ground Current – µ A
10–2
IO = 10 mA
34.4
34.3
34.2
10–31 –50 –25 0
25 50 75 100 125 150
TA – Free-Air Temperature – °C
34.1
34.0 0
25
50
75 100 125 150
IL – Load Current – mA
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 Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1999, Texas Instruments Incorporated 1
Obsolete Devices: TPS76501, TPS76525, TPS76528
TPS76515, TPS76518, TPS76525, TPS76527 TPS76528, TPS76530, TPS76533, TPS76550, TPS76501 ULTRA-LOW QUIESCIENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS236 – AUGUST 1999
description (continued)
Power good (PG) is an active high output, which can be used to implement a power-on reset or a low-battery indicator.
The TPS765xx is offered in 1.5-V, 1.8-V, 2.5-V, 2.7-V, 2.8-V, 3.0-V, 3.3-V and 5.0-V fixed-voltage ve.