LP2953QML Datasheet, PDF (2/24 Pages) Texas Instruments – Adjustable Micropower Low-Dropout Voltage Regulators

LP2953QML
September 1, 2011
Adjustable Micropower Low-Dropout Voltage Regulators
General 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 sys-
tems. 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 fea-
tures, 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 reg-
ulation.
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.
Features
■ ^{Output voltage adjusts from 1.23V to 29V}
■ ^{Guaranteed 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}
Ordering Information
NS Part Number
LP2953AMWG/883
LP2953AMWG-QMLV
LP2953AMGW/883
LP2953AMGW-QMLV
LP2953 MDS
SMD Part Number
5962-9233601QXA
5962-9233601VXA
5962-9233602QXA
5962-9233602VXA
NS Package Number
WG16A
WG16A
WG16A
WG16A
(Note 1)
Package Description
16LD Ceramic SOIC
16LD Ceramic SOIC
16LD Ceramic SOIC
16LD Ceramic SOIC
Bare Die
Note 1: FOR ADDITIONAL DIE INFORMATION, PLEASE VISIT THE HI REL WEB SITE AT: www.national.com/analog/space/level_die
Connection Diagrams
LP2953
16-Pin Ceramic SOIC
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