LD2985AXX Datasheet

IC型號：
LD2985AXX
PDF描述：
Very low drop and low noise voltage regulator low ESR capaci...
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芯片廠家：
STMICROELECTRONICS

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LD2985Axx

LD2985Bxx

Very low drop and low noise voltage regulator low ESR

capacitors compatible, with inhibit function

Features

鈻?/div>

Very low dropout voltage (280 mV at 150 mA

and 7 mV at 1 mA load)

Very low quiescent current (2 mA typ. at 150

mA load and 80 碌A(chǔ) at no load)

Output current up to 150 mA

Logic controlled electronic shutdown

Output voltage of 1.8, 2.5, 2.7, 2.8, 3, 3.3, 5 V

Internal current and thermal limit

Available in 鹵 1 % tolerance (at 25 擄C, A

version)

Low output noise voltage 30 mVrms

Smallest package SOT23-5L

Temperature range: -40擄C to 125 擄C

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.

An external capacitor, C

BYP

= 10 nF, connected

between bypass pin and GND reduce the noise

to 30 碌Vrms.

Typical application are in cellular phone, palmtop

laptop computer, personal digital assistant (PDA),

personal stereo, camcorder and camera.

SOT23-5L

Description

The LD2985A/Bxx is a 150 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 碌A(chǔ) when INHIBIT

pin is pulled low. Shutdown logic control function

is available on pin 3 (TTL compatible). This

Table 1.

Device summary

Part numbers

A Version

LD2985AXX18

LD2985AXX25

LD2985AXX27

LD2985AXX28

LD2985AXX30

LD2985AXX33

LD2985AXX50

August 2008

B Version

LD2985BXX18

LD2985BXX25

LD2985BXX27

LD2985BXX28

LD2985BXX30

LD2985BXX33

LD2985BXX50

Rev 10

Output voltages

1.8 V

2.5 V

2.7 V

2.8 V

3.0 V

3.3 V

5.0 V

1/21

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