Datasheet > LD2982BXX

LD2982BXX

更新时间： 2024-11-19 04:44:59

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		稳压器
页数	文件大小	规格书
20页	330K
描述
Very low drop and low noise voltage regulator with inhibit function, low ESR capacitors compatible

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数据手册

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LD2982BXX 数据手册

LD2982Axx

LD2982Bxx

Very low drop and low noise voltage regulator with

inhibit function, low ESR capacitors compatible

Features

■ Very low dropout voltage (120 mV at 50 mA

and 7 mV at 1 mA load)

■ Very low quiescent current (375 mA typ. at

50 mA load and 75 mA at 1 mA)

■ Output current up to 50 mA

■ Logic controlled electronic shutdown

■ Output voltage of 1.8, 2.7, 3.2, 3.3 V

■ Internal current and thermal limit

SOT23-5L

■ Available in 1 % tolerance

(at 25 °C, A version)

An external capacitor C

= 10 nF connected

BYP

between bypass pin and GND reduce the noise

to 30 µVrms.

■ Supply voltage rejection: 45 dB (typ)

■ Only 1 µF for stability

Typical application are in cellular phone,

palmtop/laptop computer, personal digital

assistant (PDA), personal stereo, camcorder and

camera.

■ Low output noise voltage 30 µVrms

■ Smallest package SOT23-5L

■ Temperature range: -40 °C to 125 °C

Description

The LD2982A/Bxx is a 50 mA fixed output voltage

regulator. The ultra low drop voltage and the low

quiescent current make them particularly suitable

for low noise, low power applications, and in

battery powered systems. In sleep mode

quiescent current is less than 1 µA when INHIBIT

pin is pulled low. Shutdown logic control function

is available on pin 3 (TTL compatible). This

means that when the device is used as local

regulator, it is possible to put a part of the board in

standby, decreasing the total power consumption.

Table 1.

Device summary

Part numbers

A Version

B Version

Output voltage

LD2982AXX18

LD2982AXX27

LD2982AXX32

LD2982BXX18

LD2982BXX27

LD2982BXX32

1.8 V

2.7 V

3.2 V

July 2008

Rev 6

1/20

www.st.com

12 3 4 5 6 7...20

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与LD2982BXX相关器件

型号	品牌	获取价格	描述	数据表
LD2982BXX15	STMICROELECTRONICS	获取价格	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATO WITH INHIBIT FUNCTION
LD2982BXX18	STMICROELECTRONICS	获取价格	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATO WITH INHIBIT FUNCTION
LD2982BXX25	STMICROELECTRONICS	获取价格	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATO WITH INHIBIT FUNCTION
LD2982BXX27	STMICROELECTRONICS	获取价格	Very low drop and low noise voltage regulator with inhibit function, low ESR capacitors co
LD2982BXX28	STMICROELECTRONICS	获取价格	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATO WITH INHIBIT FUNCTION
LD2982BXX285	STMICROELECTRONICS	获取价格	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATO WITH INHIBIT FUNCTION
LD2982BXX30	STMICROELECTRONICS	获取价格	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATO WITH INHIBIT FUNCTION
LD2982BXX31	STMICROELECTRONICS	获取价格	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATO WITH INHIBIT FUNCTION
LD2982BXX32	STMICROELECTRONICS	获取价格	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATO WITH INHIBIT FUNCTION
LD2982BXX33	STMICROELECTRONICS	获取价格	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATO WITH INHIBIT FUNCTION