Datasheet > LP38691-ADJ_10

LP38691-ADJ_10

更新时间： 2024-09-29 11:52:47

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器电容器
页数	文件大小	规格书
14页	388K
描述
500mA Low Dropout CMOS Linear Regulators with Adjustable Output Stable with Ceramic Output Capacitors

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LP38691-ADJ_10 数据手册

September 24, 2010

LP38691-ADJ

LP38693-ADJ

500mA Low Dropout CMOS Linear Regulators with

Adjustable Output

Stable with Ceramic Output Capacitors

General Description

Features

The LP38691/3-ADJ low dropout CMOS linear regulators pro-

vide 2.0% precision reference voltage, extremely low dropout

voltage (250mV @ 500mA load current, V_OUT= 5V) and ex-

cellent AC performance utilizing ultra low ESR ceramic output

capacitors.

Output voltage range of 1.25V - 9V

■

2.0% adjust pin voltage accuracy (25°C)

Low dropout voltage: 250mV @ 500mA (typ, 5V out)

Wide input voltage range (2.7V to 10V)

Precision (trimmed) bandgap reference

The low thermal resistance of the LLP and SOT-223 pack-

ages allow the full operating current to be used even in high

ambient temperature environments.

Guaranteed specs for -40°C to +125°C

1µA off-state quiescent current

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.

Thermal overload protection

Foldback current limiting

■

SOT-223 and 6-Lead LLP packages

Enable pin (LP38693-ADJ)

Dropout Voltage: 250 mV (typ) @ 500mA (typ. 5V out).

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

Adjust Pin Voltage: 2.0% (25°C) accuracy.

Applications

Hard Disk Drives

■

Notebook Computers

Battery Powered Devices

Portable Instrumentation

Typical Application Circuits

20126801

20126802

V_OUT= V_ADJx (1 + R1/R2)

Note: *Minimum value required for stability.

201268

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