LM2931D-R datasheet(1/21 Pages) STMICROELECTRONICS

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May 2010

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LM2931XX, LM2931AXX33

LM2931AXX50

Very low drop voltage regulators with inhibit function

Features

■ Very low dropout voltage (0.15 V typ. at 10 mA

load)

■ Low quiescent current (typ. 2.5 mA, at 100 mA

load)

■ Output current up to 100 mA

■ Adjustable (from VOUT = 2.5 V only SO-8) and

fixed (3.3 V and 5 V) output voltage version

■ Internal current and thermal limit

■ Load dump protection up to 60 V

■ Reverse transient protection up to -50 V

■ Temperature range: -40 to 125 °C

■ Package available: TO-92, DPAK, SO-8 (with

inhibit control)

Description

The LM2931xx are very low drop regulators. The

very low drop voltage and the low quiescent

current make them particular suitable for low

noise, low power applications and in battery-

powered systems. In the 8-pin configuration (SO-

8), fully compatible with the older L78Lxx family, a

shutdown logic control function is available.

This means that when the device is used as a

local regulator it is possible to put a part of the

board in standby, decreasing total power

consumption. Ideal for automotive applications,

LM2931xx is protected from reverse battery

installations or 2 battery jumps. During the

transient, such as a 60 V load dump, when the

input voltage can exceed the specified maximum

operating input voltage of 26 V, the regulator

automatically shuts down to protect both internal

circuitry and the load.

TO-92

DPAK

SO-8

Table 1.

Device summary

Order codes

Output voltages

DPAK

TO-92 (Bag)

SO-8

LM2931AD33R

3.3 V

LM2931ADT50R

LM2931AZ50R

LM2931AD50R

5.0 V

LM2931D-R

2.5 to 26 V

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
STMicroelectronics	LM2931D-R	884Kb / 23P	Very low drop voltage regulators with inhibit function 10-Jul-2008

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
STMicroelectronics	KF00	224Kb / 17P	VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT Jan-2004
	L4931	324Kb / 29P	VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT Jan-2004
	LF00	649Kb / 34P	VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT Aug-2003
	LF00AB	260Kb / 32P	VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT Jul-1999
	LM2931	361Kb / 19P	VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT FUNCTION Mar-2004
	LF00	598Kb / 46P	Very low drop voltage regulators with inhibit 24-May-2006
	LD2979XX	298Kb / 15P	Very low drop voltage regulators with inhibit 09-Apr-2008
	LEXXAB	908Kb / 39P	Very low drop voltage regulators with inhibit 10-Jul-2008
	LM2931XX	884Kb / 23P	Very low drop voltage regulators with inhibit function 10-Jul-2008
	LEXXAB	912Kb / 39P	Very low drop voltage regulators with inhibit 10-Jul-2008

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