Datasheet > LD49300XX08

LD49300XX08

更新时间： 2024-10-19 11:58:03

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	678K
描述
3 A very low drop-out voltage regulator

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LD49300XX08 数据手册

LD49300XX08

LD49300XX10, LD49300XX12

3 A very low drop-out voltage regulator

Features

■ Input voltage range:

– V = 1.4 V to 5.5 V

– V

= 3 V to 6 V

BIAS

■ Stable with ceramic capacitor

1.5 ꢀ initial tolerance

■ Maximum dropout voltage (V - V ) of 400 mV

■

PPAK

over temperature

■ Adjustable output voltage down to 0.8 V

■ Ultra fast transient response (up to 10 MHz

Description

bandwidth)

■ Excellent line and load regulation

The LD49300xx is a high-bandwidth, low drop-

out, 3.0 A voltage regulator, ideal for powering

core voltages of low-power microprocessors. The

LD49300xx implements a dual supply

specifications

■ Logic controlled shutdown option

■ Thermal shutdown and current limit protection

■ Junction temperature range: - 25 °C to 125 °C

configuration allowing for very low output

impedance and very fast transient response. The

LD49300xx requires a bias input supply and a

main input supply, allowing for ultra-low input

voltages on the main supply rail. The input supply

operates from 1.4 V to 5.5 V and the bias supply

requires between 3 V and 6 V for proper

Applications

■ Graphics processors

■ PC add-in cards

operation. The LD49300xx offers fixed output

voltages from 0.8 V to 1.8 V and adjustable output

voltages down to 0.8 V. The LD49300xx requires a

minimum output capacitance for stability, and

works optimally with small ceramic capacitors.

■ Microprocessor core voltage supply

■ Low voltage digital ICs

■ High efficiency linear power supplies

■ SMPS post regulators

Table 1.

Device summary

Order codes

Package

Packaging

LD49300PT08R ⁽¹⁾

LD49300PT10R

LD49300PT12R

PPAK (Tape and reel)

2500 parts per reel

1. Adjustable version.

June 2010

Doc ID 12861 Rev 3

1/20

www.st.com

12 3 4 5 6 7...20

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