LP2954, LP2954A

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SNVS096D – JUNE 1999 – REVISED MARCH 2013

LP2954/LP2954A 5V and Adjustable Micropower Low-Dropout Voltage Regulators

Check for Samples: LP2954, LP2954A

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FEATURES

DESCRIPTION

The LP2954 is a 5V micropower voltage regulator

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•

5V Output within 1.2% Over Temperature

with very low quiescent current (90

μA typical at 1 mA

(A Grade)

load) and very low dropout voltage (typically 60 mV at

•

Adjustable 1.23 to 29V Output Voltage

light loads and 470 mV at 250 mA load current).

Available (LP2954IM and LP2954AIM)

The quiescent current increases only slightly at

•

Ensured 250 mA Output Current

dropout (120

μA typical), which prolongs battery life.

•

Extremely Low Quiescent Current

The LP2954 with a fixed 5V output is available in the

•

Low Dropout Voltage

three-lead TO-220 and DDPAK/TO-263 packages.

•

Reverse Battery Protection

The adjustable LP2954 is provided in an 8-lead

surface mount, small outline package. The adjustable

•

Extremely Tight Line and Load Regulation

version also provides a resistor network which can be

•

Very Low Temperature Coefficient

pin strapped to set the output to 5V.

•

Current and Thermal Limiting

Reverse battery protection is provided.

•

Pin Compatible with LM2940 and LM340

The tight line and load regulation (0.04% typical), as

(5V Version Only)

well as very low output temperature coefficient make

•

Adjustable Version Adds Error Flag to Warn of

the LP2954 well suited for use as a low-power

Output Drop and a Logic-Controlled Shutdown

voltage reference.

Output accuracy is ensured at both room temperature

APPLICATIONS

and over the entire operating temperature range.

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High-Efficiency Linear Regulator

•

Low Dropout Battery-Powered Regulator

Package Outline and Ordering Information

Figure 1. TO-220 3–Lead Plastic Package (Front

Figure 2. SO-8 Small Outline Surface Mount (Top

View)

View)

Figure 3. TO-263 3-Lead Plastic Surface-Mount

Figure 4. TO-263 3-Lead Plastic Surface-Mount

Package (Top View)

Package (Side View)

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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PRODUCTION DATA information is current as of publication date.

Copyright © 1999–2013, 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.