LD2982BXX18 datasheet(1/20 Pages) STMICROELECTRONICS

tên linh kiện	LD2982BXX18

Giải thích chi tiết về linh kiện	Very low drop and low noise voltage regulator with inhibit function, low ESR capacitors compatible

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July 2008

Rev 6

1/20

20

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

■ Available in ± 1 % tolerance

(at 25 °C, A version)

■ Supply voltage rejection: 45 dB (typ)

■ Only 1 µF for stability

■ 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.

An external capacitor CBYP = 10 nF connected

between bypass pin and GND reduce the noise

to 30 µVrms.

Typical application are in cellular phone,

palmtop/laptop computer, personal digital

assistant (PDA), personal stereo, camcorder and

camera.

SOT23-5L

Table 1.

Device summary

Part numbers

A Version

B Version

Output voltage

LD2982AXX18

LD2982BXX18

1.8 V

LD2982AXX27

LD2982BXX27

2.7 V

LD2982AXX32

LD2982BXX32

3.2 V

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
STMicroelectronics	LD2982BXX18	333Kb / 17P	Very low drop and low noise voltage regulator with inhibit function, low ESR capacitors compatible 29-Jul-2009

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
STMicroelectronics	LD2982	296Kb / 13P	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR WITH INHIBIT FUNCTION, LOW ESR CAP. COMPATIBLE Jul-2003
STMicroelectronics	LD2985	301Kb / 13P	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR LOW ESR CAP. COMPATIBLE, WITH INHIBIT FUNCTION Jul-2003
Unisonic Technologies	LD1985	424Kb / 10P	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR LOW ESR CAP. COMPATIBLE, WITH INHIBIT FUNCTION
Unisonic Technologies	LD2985	148Kb / 10P	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR LOW ESR CAP. COMPATIBLE, WITH INHIBIT FUNCTION
STMicroelectronics	LD2985AXX	340Kb / 21P	Very low drop and low noise voltage regulator low ESR capacitors compatible, with inhibit function 27-Aug-2008
	LD2982BXX18	333Kb / 17P	Very low drop and low noise voltage regulator with inhibit function, low ESR capacitors compatible 29-Jul-2009
	LD2985AXX	344Kb / 21P	Very low drop and low noise voltage regulator low ESR capacitors compatible, with inhibit function 27-Jan-2009
E-Tech Electronics LTD	LD1985	294Kb / 9P	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR LOW ESR CAP. COMPATIBLE, WITH INHIBIT FUNCTION
E-Tech Electronics LTD	LD2985	355Kb / 15P	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR LOW ESR CAP. COMPATIBLE, WITH INHIBIT FUNCTION
Unisonic Technologies	LD2985	359Kb / 16P	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR LOW ESR CAP. COMPATIBLE,WITH INHIBIT FUNCTION

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