Datasheet > LP3990

LP3990

更新时间： 2024-11-01 00:01:07

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器
页数	文件大小	规格书
13页	709K
描述
150mA Linear Voltage Regulator for Digital Applications

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LP3990 数据手册

November 2004

LP3990

150mA Linear Voltage Regulator for Digital Applications

General Description

Key Specifications

n Input Voltage Range

n Output Voltage Range

n Output Current

n Output Stable - Capacitors

n Virtually Zero I_Q(Disabled)

n Very Low I_Q(Enabled)

n Low Output Noise

n PSRR

2.0 to 6.0V

0.8 to 3.3V

150mA

The LP3990 regulator is designed to meet the requirements

of portable, battery-powered systems providing an accurate

output voltage, low noise, and low quiescent current. The

LP3990 will provide a 0.8V output from the low input voltage

of 2V at up to 150mA load current. When switched into

shutdown mode via a logic signal at the enable pin, the

power consumption is reduced to virtually zero.

0.47uF

10nA

43uA

150uV_RMS

55dB at 1kHz

105us

The LP3990 is designed to be stable with space saving

ceramic capacitors as small as 0.47µF.

n Fast Start Up

Performance is specified for a -40˚C to 125˚C junction tem-

perature range.

For output voltages other than 0.8V, 1.35V, 1.5V, 1.8V, 2.5V, Package

2.8V, or 3.3V please contact your local NSC sales office.

All available in Lead Free option.

4 Pin micro SMD

1 mm x 1.28mm

Features

6 pin LLP (SOT23 footprint)

n 1% Voltage Accuracy at Room Temperature

n Stable with Ceramic Capacitor

n Logic Controlled Enable

SOT23 - 5

For other package options contact your NSC sales office.

n No Noise Bypass Capacitor Required

n Thermal-Overload and Short-Circuit Protection

Applications

n Cellular Handsets

n Hand-Held Information Appliances

Typical Application Circuit

20076801

DS200768

www.national.com

12 3 4 5 6 7...13

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