TPS77001 Datasheet, PDF (1/16 Pages) Texas Instruments – ULTRA LOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS

TPS77001, TPS77012, TPS77015, TPS77018, TPS77025
TPS77027, TPS77028, TPS77030, TPS77033, TPS77050
ULTRA LOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS
SLVS210C – JUNE 1999 – REVISED SEPTEMBER 1999
D 50-mA Low-Dropout Regulator
D Available in 1.2-V, 1.5-V, 1.8-V, 2.5-V, 2.7-V,
2.8-V, 3.0-V, 3.3-V, and 5-V Fixed-Output and
Adjustable Versions
D Only 17 µA Quiescent Current at 50 mA
D 1 µA Quiescent Current in Standby Mode
D Dropout Voltage Typically 35 mV @ 50mA
D Over Current Limitation
D –40°C to 125°C Operating Junction
Temperature Range
D 5-Pin SOT-23 (DBV) Package
DBV PACKAGE
(TOP VIEW)
IN
1
5
OUT
GND
2
EN
3
4
NC/FB
description
The TPS770xx family of low-dropout (LDO) voltage regulators offers the benefits of low dropout voltage, ultra
low-power operation, and miniaturized packaging. These regulators feature low dropout voltages and ultra low
quiescent current compared to conventional LDO regulators. Offered in a 5-terminal small outline
integrated-circuit SOT-23 package, the TPS770xx series devices are ideal for micropower operations and
where board space is at a premium.
A combination of new circuit design and process innovation has enabled the usual PNP pass transistor to be
replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the
dropout voltage is very low — typically 35 mV at 50 mA of load current (TPS77050) — and is directly proportional
to the load current. Since the PMOS pass element is a voltage-driven device, the quiescent current is ultra low
(28 µA maximum) and is stable over the entire range of output load current (0 mA to 50 mA).
Intended for use in portable systems such as
laptops and cellular phones, the ultra low-dropout
voltage feature and ultra low-power operation
result in a significant increase in system battery
operating life.
TPS77033
GROUND CURRENT
vs
FREE-AIR TEMPERATURE
The TPS770xx also features a logic-enabled
sleep mode to shut down the regulator, reducing
quiescent current to 1 µA typical at T_J = 25°C. The
TPS770xx is offered in 1.2-V, 1.5-V, 1.8-V, 2.5-V,
22
VI = 4.3 V
21 ^{CO = 4.7 µF}
2.7-V, 2.8-V, 3.0-V, 3.3-V, and 5-V fixed-voltage
20
versions and in a variable version (programmable
over the range of 1.2 V to 5.5 V).
19
IO = 50 mA
IO = 0 mA
18
17
16
15
–60 –40 –20 0 20 40 60 80 100 120 140
TA – Free-Air Temperature – °C
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
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