Datasheet > LP38690SD-1.8/NOPB

LP38690SD-1.8/NOPB

更新时间： 2024-11-15 20:12:31

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August 19, 2009

LP38690/LP38692

1A Low Dropout CMOS Linear Regulators

Stable with Ceramic Output Capacitors

General Description

Features

The LP38690/2 low dropout CMOS linear regulators provide

tight output tolerance (2.5% typical), extremely low dropout

voltage (450mV @ 1A load current, V_OUT= 5V), and excellent

AC performance utilizing ultra low ESR ceramic output ca-

pacitors.

2.5% output accuracy (25°C)

■

Low dropout voltage: 450mV @ 1A (typ, 5V out)

Wide input voltage range (2.7V to 10V)

Precision (trimmed) bandgap reference

Guaranteed specs for -40°C to +125°C

1µA off-state quiescent current

■

The low thermal resistance of the LLP, SOT-223 and T0-252

packages allow the full operating current to be used even in

high ambient temperature environments.

Thermal overload protection

The use of a PMOS power transistor means that no DC base

drive current is required to bias it allowing ground pin current

to remain below 100 µA regardless of load current, input volt-

age, or operating temperature.

Foldback current limiting

T0-252, SOT-223 and 6-Lead LLP packages

Enable pin (LP38692)

Dropout Voltage: 450 mV (typ) @ 1A (typ. 5V out).

Ground Pin Current: 55 µA (typ) at full load.

Precision Output Voltage: 2.5% (25°C) accuracy.

Applications

Hard Disk Drives

■

Notebook Computers

Battery Powered Devices

Portable Instrumentation

■

Typical Application Circuits

20126601

20126602

Note: * Minimum value required for stability.

**LLP package devices only.

201266

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