LP2983 Micropower 150 mA Voltage Regulator in SOT-23 Package For Output Voltages ≤ 1.2V Designed for Use with Very Low ESR Output Capacitors

General Description

The LP2983 is a 150 mA, fixed-output voltage regulator designed to provide tight voltage regulation in applications with output voltages ≤ 1.2V.

Using an optimized VIP™ (Vertically Integrated PNP) process, the LP2983 delivers unequalled performance in all critical specifications:

Ground Pin Current: Typically 825 µA @ 150 mA load, and 75 µA @ 1 mA load.

Enhanced Stability: The LP2983 is stable with output capacitor ESR down to zero, which allows the use of ceramic capacitors on the output.

Smallest Possible Size: SOT-23 package uses absolute minimum board space.

Precision Output: 1% tolerance output voltages available (A grade).

Features

• Guaranteed 150 mA output current
• Smallest possible size (SOT-23 package)
• Requires minimum external components
• Stable with low-ESR output capacitor
• Low ground pin current at all loads
• Output voltage accuracy 1% (A Grade)

• High peak current capability
• Wide supply voltage range (16V max)
• Low ZOUT: 0.3Ω typical (10 Hz to 1 MHz)
• Overtemperature/overcurrent protection
• −40˚C to +125˚C junction temperature range

Applications

• Cellular Phone
• Palmtop/Laptop Computer
• Personal Digital Assistant (PDA)
• Camcorder, Personal Stereo, Camera

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.

Storage Temperature Range −65˚C to +150˚C

Operating Junction Temperature Range −40˚C to +125˚C

Lead Temp. (Soldering, 5 sec.) 260˚C

ESD Rating (Note 2) 2 kV

Power Dissipation (Note 3) Internally Limited

Input Supply Voltage (Survival) −0.3V to +16V

Input Supply Voltage (Operating) 2.2V to +16V

Shutdown Input Voltage (Survival) −0.3V to +16V

Output Voltage Survival, (Note 4) −0.3V to +9V

I_OUT (Survival) Short Circuit Protected

Input-Output Voltage Survival,(Note 5) −0.3V to +16V

Block Diagram

Basic Application Circuit

Connection Diagram

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