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5962-9650501QXA

更新时间： 2024-02-11 01:12:21

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器调节器输出元件
页数	文件大小	规格书
11页	341K
描述
Negative Low Dropout Adjustable Regulator

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5962-9650501QXA 技术参数

生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	DIP,	针数：	16
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.83
最大回动电压 1：	1 V	JESD-30 代码：	R-GDIP-T16
JESD-609代码：	e0	长度：	19.43 mm
功能数量：	1	端子数量：	16
工作温度TJ-Max：	150 °C	最大输出电流 1：	1 A
最大输出电压 1：	24 V	最小输出电压 1：	3 V
封装主体材料：	CERAMIC, GLASS-SEALED	封装代码：	DIP
封装形状：	RECTANGULAR	封装形式：	IN-LINE
认证状态：	Not Qualified	调节器类型：	ADJUSTABLE NEGATIVE SINGLE OUTPUT LDO REGULATOR
筛选级别：	MIL-PRF-38535 Class V	座面最大高度：	5.08 mm
表面贴装：	NO	技术：	BIPOLAR
端子面层：	TIN LEAD	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
宽度：	7.62 mm

5962-9650501QXA 数据手册

May 1999

LM2991

Negative Low Dropout Adjustable Regulator

General Description

Features

n Output voltage adjustable from −3V to −24V, typically

−2V to −25V

The LM2991 is a low dropout adjustable negative regulator

with a output voltage range between −3V to −24V. The

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

/Off pin for remote shutdown capability.

n Output current in excess of 1A

n Dropout voltage typically 0.6V at 1A load

n Low quiescent current

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

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 tem-

perature 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 regulator is in the dropout mode (V_OUT− V_IN≤ 3V).

Applications

n Post switcher regulator

n Local, on-card, regulation

n Battery operated equipment

The LM2991 is short-circuit proof, and thermal shutdown in-

cludes hysteresis to enhance the reliability of the device

when inadvertently overloaded for extended periods. The

LM2991 is available in 5-lead TO-220 and TO-263 packages

and is rated for operation over the automotive temperature

range of −40˚C to +125˚C. Mil-Aero versions are also avail-

able.

Typical Application

DS011260-1

(1 + R2/R1)

REF

OUT

*Required if the regulator is located further than 6 inches from the power supply filter capacitors. A 1 µF solid tantalum or a 10 µF aluminum electrolytic

capacitor is recommended.

*Required for stability. Must be at least a 10 µF aluminum electrolytic or a 1 µF solid tantalum to maintain stability. May be increased without bound to

maintain regulation during transients. Locate the capacitor as close as possible to the regulator. The equivalent series resistance (ESR) is critical, and

should be less than 10Ω over the same operating temperature range as the regulator.

DS011260

www.national.com

12 3 4 5 6 7...11

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