Datasheet > LD3985G24R

LD3985G24R

更新时间： 2024-02-22 08:53:58

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		稳压器信息通信管理
页数	文件大小	规格书
14页	396K
描述
ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REGULATORS LOW ESR CAPACITORS COMPATIBLE

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LD3985G24R 数据手册

LD3985

SERIES

ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE

REGULATORS LOW ESR CAPACITORS COMPATIBLE

■

INPUT VOLTAGE FROM 2.5V TO 6V

STABLE WITH LOW ESR CERAMIC

CAPACITORS

■

ULTRA LOW DROPOUT VOLTAGE (100mV

TYP. AT 150mA LOAD, 0.4mV TYP. AT 1mA

LOAD)

VERY LOW QUIESCENT CURRENT (85µA

TYP. AT NO LOAD, 170µA TYP. AT 150mA

LOAD; MAX 1.5µA IN OFF MODE)

GUARANTEED OUTPUT CURRENT UP TO

150mA

WIDE RANGE OF OUTPUT VOLTAGE: 1.2V;

1.22V; 1.25V; 1.35V; 1.5V; 1.8V; 2V; 2.1V;

2.2V; 2.4V; 2.5V; 2.6V; 2.7V; 2.8V; 2.85V;

2.9V; 3V; 3.1V; 3.2V; 3.3V; 4.7V; 5V

Flip-Chip

(1.57x1.22)

SOT23-5L

TSOT23-5L

■

The ultra low drop-voltage, low quiescent current

and low noise make it suitable for low power

applications and in battery powered systems.

Regulator ground current increases only slightly in

dropout, further prolonging the battery life. Power

supply rejection is better than 60 dB at low

frequencies and starts to roll off at 10KHz. High

power supply rejection is maintained down to low

input voltage levels common to battery operated

circuits. Shutdown Logic Control function is

available, 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. The LD3985 is designed to work

with low ESR ceramic capacitors. Typical

applications are in mobile phone and similar

battery powered wireless systems.

■

FAST TURN-ON TIME: TYP. 200µs [C =1µF,

= 10nF AND I =1mA]

BYP

LOGIC-CONTROLLED ELECTRONIC

SHUTDOWN

INTERNAL CURRENT AND THERMAL LIMIT

OUTPUT LOW NOISE VOLTAGE 30µVRMS

OVER 10Hz to 100KHz

S.V.R. OF 60dB AT 1KHz, 50dB AT 10KHz

TEMPERATURE RANGE: -40°C TO 125°C

■

DESCRIPTION

The LD3985 provides up to 150mA, from 2.5V to

6V input voltage.

Figure 1: Schematic Diagram

Rev. 8

1/14

October 2004

12 3 4 5 6 7...14

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