LM2991QML

更新时间： 2024-11-23 05:42:03

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器
页数	文件大小	规格书
13页	682K
描述
Negative Low Dropout Adjustable Regulator

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中文翻译

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数据手册

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LM2991QML 数据手册

March 2006

LM2991QML

Negative Low Dropout Adjustable Regulator

General Description

Features

n Output voltage adjustable from −2V to −25V

n Output current in excess of 1A

The LM2991 is a low dropout adjustable negative regulator

with a output voltage range between −2V to −25V. The

LM2991 provides up to 1A of load current and features a On

/Off pin for remote shutdown capability.

n Dropout voltage typically 0.6V at 1A load

n Low quiescent current

The LM2991 uses new circuit design techniques to provide a

low dropout voltage, low quiescent current and low tempera-

ture coefficient precision reference. The dropout voltage at

1A load current is typically 0.6V and a guaranteed worst-

case maximum of 1V over the entire operating temperature

range. The quiescent current is typically 1 mA with a 1A load

current and an input-output voltage differential greater than

3V. A unique circuit design of the internal bias supply limits

the quiescent current to only 9 mA (typical) when the regu-

lator is in the dropout mode (V_O− V_I≤ 3V).

n Internal short circuit current limit

n Internal thermal shutdown with hysteresis

n TTL, CMOS compatible ON/OFF switch

n Functional complement to the LM2941 series

Applications

n Post switcher regulator

n Local, on-card, regulation

n Battery operated equipment

The LM2991 is short-circuit proof, and thermal shutdown

includes hysteresis to enhance the reliability of the device

when inadvertently overloaded for extended periods.

Ordering Information

NS Part Number

LM2991J-QML

SMD Part Number

5962-9650501QEA

5962-9650501VEA

5962-9650501QXA

NS Package Number

Package Description

16LD Ceramic Dip

J16A

LM2991J-QMLV

LM2991WG-QML

16LD Ceramic Dip

WG16A

16LD Ceramic SOIC

Connection Diagrams

16-Lead Ceramic Surface-Mount Package

16-Lead Ceramic Dual-in-Line Package

20158730

Top View

See NS Package Number WG16A

20158729

Top View

See NS Package Number J16A

DS201587

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LM2991S-NOPB	TI	获取价格	LM2991 Negative Low Dropout Adjustable Regulator
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