TPS76425, TPS76427, TPS76428, TPS76430, TPS76433
LOW-POWER LOW-NOISE 150-mA LOW-DROPOUT LINEAR REGULATORS
SLVS180A – MARCH 1999 – REVISED JUNE 1999
DBV PACKAGE
(TOP VIEW)
150-mA Low Noise, Low-Dropout Regulator
Output Voltage: 2.5 V, 2.7 V, 2.8 V, 3.0 V, 3.3 V
Output Noise Typically 50 µV
1
2
3
5
OUT
IN
Quiescent Current Typically 85 µA
GND
Dropout Voltage, Typically 300 mV
at 150 mA
4
BYPASS
EN
Thermal Protection
Over Current Limitation
Less Than 2-µA Quiescent Current in
Shutdown Mode
–40°C to 125°C Operating Junction
Temperature Range
5-Pin SOT-23 (DBV) Package
description
The TPS764xx family of low-dropout (LDO) voltage regulators offers the benefits of a low noise, low-dropout
voltage, low-power operation, and miniaturized package. Additionally, they feature low quiescent current when
compared to conventional LDO regulators. Offered in 5-terminal small outline integrated-circuit SOT-23
package, the TPS764xx series devices are ideal for low-noise applications, cost-sensitive designs and
applications 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 300 mV at 150 mA of load current (TPS76433)—and is directly
proportional to the load current. Since the PMOS pass element is a voltage-driven device, the quiescent current
is very low (140 µA maximum) and is stable over the entire range of output load current (0 mA to 150 mA).
Intended for use in portable systems such as laptops and cellular phones, the low-dropout voltage feature and
low-power operation result in a significant increase in system battery operating life.
The TPS764xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current
to 1 µA maximum at T = 25°C.The TPS764xx is offered in 2.5-V, 2.7-V, 2.8-V, 3.0-V, and 3.3-V fixed-voltages.
J
AVAILABLE OPTIONS
T
VOLTAGE
2.5 V
PACKAGE
PART NUMBER
SYMBOL
PBJI
J
†
†
†
†
†
‡
‡
‡
‡
‡
TPS76425DBVT
TPS76427DBVT
TPS76428DBVT
TPS76430DBVT
TPS76433DBVT
TPS76425DBVR
TPS76427DBVR
TPS76428DBVR
TPS76430DBVR
TPS76433DBVR
2.7 V
PBKI
SOT-23
(DBV)
–40°C to 125°C
2.8 V
PCEI
3.0 V
PBLI
3.3 V
PBMI
†
‡
The DBVT passive indicates tape and reel of 250 parts.
The DBVR passive indicates tape and reel of 3000 parts.
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.
Copyright 1999, Texas Instruments Incorporated
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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265