Datasheet > LD39050XX33

LD39050XX33

更新时间： 2024-10-02 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
24页	831K
描述
500 mA low quiescent current low noise voltage regulator

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LD39050XX33 数据手册

LD39050xx

500 mA low quiescent current

low noise voltage regulator

Features

■ Input voltage from 1.5 to 5.5 V

■ Ultra low dropout voltage (200 mV typ. at 500

mA load)

■ Very low quiescent current (20 µA typ. at no

load, 100 µA typ. at 500 mA load, 1 µA max in

off mode)

■ Very low noise without bypass capacitor

■ Output voltage tolerance: 2.0 % @ 25 °C

■ 500 mA guaranteed output current

DFN6 (3 x 3 mm)

roll off at 10 kHz. An Enable logic control function

puts the LD39050 in shut-down mode allowing a

total current consumption lower than 1 µA. The

device also includes short-circuit constant current

limiting and thermal protection. Typical

applications are mobile phones, personal digital

assistants (PDAs), cordless phones and similar

battery-powered systems.

■ Wide range of output voltages available on

request: 0.8 V to 4.5 V with 100 mV step and

ADJ from 0.8 V

■ Logic-controlled electronic shutdown

■ Compatible with ceramic capacitor

= 1 µF

OUT

■ Internal current and thermal limit

■ Package DFN6 (3 x 3 mm)

■ Temperature range: -40 °C to 125 °C

Description

The LD39050 provides 500 mA maximum current

from an input voltage ranging from 1.5 V to 5.5 V

with a typical dropout voltage of 200 mV. Stability

is provided using ceramic capacitors. The ultra

low drop-voltage, low quiescent current and low

noise features make it suitable for low power

battery-powered applications. Power supply

rejection is 65 dB at low frequencies and starts to

Table 1.

Device summary

Part numbers

Order codes

Output voltages

LD39050XX

LD39050XX10

LD39050XX12

LD39050XX25

LD39050XX33

LD39050PUR

LD39050PU10R

LD39050PU12R

LD39050PU25R

LD39050PU33R

ADJ from 0.8 V

1.0 V

1.2 V

2.5 V

3.3 V

March 2009

Rev 1

1/24

www.st.com

12 3 4 5 6 7...24

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