TPS77033-Q1 Datasheet, PDF (1/15 Pages) Texas Instruments – ULTRALOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS

TPS77033-Q1
www.ti.com ....................................................................................................................................................... SLVS596C – AUGUST 2005 – REVISED APRIL 2008
ULTRALOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS
FEATURES
1
• Qualified for Automotive Applications
• 50-mA Low-Dropout Regulator
• Available in a 3.3-V Fixed-Output Voltage
• Only 17-µA Quiescent Current at 50 mA
• 1-µA Quiescent Current in Standby Mode
• Dropout Voltage Typically 35 mV at 50 mA
• –40°C to 125°C Operating Junction
Temperature Range
• 5-Pin SOT-23 (DBV) Package
DBV PACKAGE
(TOP VIEW)
IN
1
5
OUT
GND
2
EN
3
4
NC/FB
DESCRIPTION
The TPS77033 low-dropout (LDO) voltage regulator offers the benefits of low dropout voltage, ultralow-power
operation, and miniaturized packaging. This regulator features low dropout voltages and ultralow quiescent
current compared to conventional LDO regulators. Offered in a 5-terminal small-outline integrated-circuit SOT-23
package, the TPS77033 series device is 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 low and is directly proportional to the load current. Since the PMOS pass element is a
voltage-driven device, the quiescent current is ultralow (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 ultralow-dropout voltage feature and ultralow-power operation result in a significant increase in system
battery operating life.
The TPS77033 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 TPS77033 is offered in a 3.3-V fixed-voltage versions.
T_J
–40°C to 125°C
VOLTAGE
3.3 V
AVAILABLE OPTIONS⁽¹⁾
PACKAGE ⁽²⁾
PART NUMBER⁽³⁾
SOT-23 – DBV
TPS77033QDBVRQ1
SYMBOL
PCXI
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(3) DBVR indicates tape and reel of 3000 parts.
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 © 2005–2008, Texas Instruments Incorporated