LP3996

EN1

EN2

SET

POR

1 PF

1 PF

1 PF

EN1

EN2

POR

470 k:

GND

10 nF

Sets delay

for POR

LP3996

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SNVS360B – NOVEMBER 2006 – REVISED JANUARY 2008

LP3996 Dual Linear Regulator with 300mA and 150mA Outputs and Power-On-Reset

Check for Samples: LP3996

1

FEATURES

•

Stable with Ceramic Capacitors

2

•

2 LDO Outputs with Independent Enable

APPLICATIONS

•

1.5% Accuracy at Room Temperature, 3% over

•

Cellular Handsets

Temperature

•

PDAs

•

Power-On-Reset Function with Adjustable

Delay

•

Wireless Network Adaptors

•

Thermal Shutdown Protection

DESCRIPTION

The LP3996 is a dual low dropout regulator with power-on-reset circuit. The first regulator can source 150mA,

while the second is capable of sourcing 300mA and has a power-on-reset function included.

The LP3996 provides 1.5% accuracy requiring an ultra low quiescent current of 35µA. Separate enable pins

allow each output of the LP3996 to be shut down, drawing virtually zero current.

The LP3996 is designed to be stable with small footprint ceramic capacitors down to 1µF. An external capacitor

may be used to set the POR delay time as required.

The LP3996 is available in fixed output voltages and comes in a 10 pin, 3mm x 3mm package. .

Table 1. Key Specifications

VALUE

UNIT

Input Voltage Range

2.0V to 6.0

V

210mV at

Low Dropout Voltage

300mA

35

µA

<10

nA

Package available in Lead Free option.

10 pin 3mm x 3mm

Typical Application Circuit

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.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.