LP3996

Dual Linear Regulator with 300mA and 150mA Outputs

and Power-On-Reset

General 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, LLP package. .

Features

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2 LDO Outputs with Independent Enable

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1.5% Accuracy at Room Temperature, 3% over

Temperature

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Power-On-Reset Function with Adjustable Delay

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Thermal Shutdown Protection

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Stable with Ceramic Capacitors

Key Specifications

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Input Voltage Range

2.0V to 6.0V

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Low Dropout Voltage

210mV at 300mA

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Ultra-Low I

35µA

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Virtually Zero I

Package

All available in Lead Free option.

10 pin LLP 3mm x 3mm

For other package options contact your NSC sales office.

Applications

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Cellular Handsets

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PDA’s

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Wireless Network Adaptors

Typical Application Circuit

20145801

November 2006

© 2006 National Semiconductor Corporation

DS201458

www.national.com