LP2953QML, LP2953QML-SP
www.ti.com
SNVS395C – NOVEMBER 2010 – REVISED APRIL 2013
LP2953QML Adjustable Micropower Low-Dropout Voltage Regulators
Check for Samples: LP2953QML, LP2953QML-SP
FEATURES
1
•2 Output Voltage Adjusts from 1.23V to 29V
• Ensured 250 mA Output Current
• Extremely Low Quiescent Current
• Low Dropout Voltage
• Extremely Tight Line and Load Regulation
• Very Low Temperature Coefficient
• Current and Thermal Limiting
• Reverse Battery Protection
• 50 mA (Typical) Output Pulldown Crowbar
• Auxiliary Comparator Included with CMOS/TTL
Compatible Output Levels. Can be used for
Fault Detection, Low Input Line Detection, etc.
APPLICATIONS
• High-Efficiency Linear Regulator
• Regulator with Under-Voltage Shutdown
• Low Dropout Battery-Powered Regulator
• Snap-ON/Snap-OFF Regulator
DESCRIPTION
The LP2953A is a micropower voltage regulator with
very low quiescent current (130 μA typical at 1 mA
load) and very low dropout voltage (typ. 60 mV at
light load and 470 mV at 250 mA load current). It is
ideally suited for battery-powered systems.
Furthermore, the quiescent current increases only
slightly at dropout, which prolongs battery life.
The LP2953A retains all the desirable characteristics
of the LP2951, but offers increased output current,
additional features, and an improved shutdown
function.
The internal crowbar pulls the output down quickly
when the shutdown is activated.
The error flag goes low if the output voltage drops out
of regulation.
Reverse battery protection is provided.
The internal voltage reference is made available for
external use, providing a low-T.C. reference with very
good line and load regulation.
Connection Diagram
Note: Pins 1, 8, 9, 16 must be shorted together on customer PC board application
Figure 1. 16-Pin CFP Package
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.
All trademarks are the property of their respective owners.
2
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 © 2010–2013, Texas Instruments Incorporated
