Datasheet > LM2990T-5.0

LM2990T-5.0

更新时间： 2024-11-22 22:25:19

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
12页	424K
描述
Negative Low Dropout Regulator

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技术参数
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LM2990T-5.0 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	PLASTIC, TO-220, 3 PIN	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	3.8	可调性：	FIXED
最大回动电压 1：	1 V	标称回动电压 1：	1 V
最大绝对输入电压：	26 V	最大输入电压：	26 V
最小输入电压：	6 V	JESD-30 代码：	R-PSFM-T3
JESD-609代码：	e0	最大电网调整率：	0.04%
最大负载调整率：	0.04%	湿度敏感等级：	1
功能数量：	1	输出次数：	1
端子数量：	3	工作温度TJ-Max：	125 °C
工作温度TJ-Min：	-40 °C	最大输出电流 1：	1 A
最大输出电压 1：	5.25 V	最小输出电压 1：	4.75 V
标称输出电压 1：	5 V	封装主体材料：	PLASTIC/EPOXY
封装代码：	TO-220	封装等效代码：	SIP3,.1TB
封装形状：	RECTANGULAR	封装形式：	FLANGE MOUNT
峰值回流温度（摄氏度）：	NOT APPLICABLE	认证状态：	Not Qualified
调节器类型：	FIXED NEGATIVE SINGLE OUTPUT LDO REGULATOR	子类别：	Other Regulators
表面贴装：	NO	技术：	BIPOLAR
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	SINGLE
处于峰值回流温度下的最长时间：	NOT APPLICABLE	最大电压容差：	5%
Base Number Matches：	1

LM2990T-5.0 数据手册

June 1999

LM2990

Negative Low Dropout Regulator

LM2990 is available in a 3-lead TO-220 package and is rated

for operation over the automotive temperature range of

−40˚C to +125˚C.

General Description

The LM2990 is a three-terminal, low dropout, 1 ampere

negative voltage regulator available with fixed output volt-

ages of −5, −5.2, −12, and −15V.

Features

n 5% output accuracy over entire operating range

n Output current in excess of 1A

The LM2990 uses new circuit design techniques to provide

low dropout and low quiescent current. The dropout voltage

at 1A load current is typically 0.6V and

a guaranteed

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 Functional complement to the LM2940 series

worst-case maximum of 1V over the entire operating tem-

perature range. The quiescent current is typically 1 mA with

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).

Output voltage accuracy is guaranteed to 5% over load,

and temperature extremes.

Applications

n Post switcher regulator

n Local, on-card, regulation

n Battery operated equipment

The LM2990 is short-circuit proof, and thermal shutdown in-

cludes hysteresis to enhance the reliability of the device

when overloaded for an extended period of time. The

Typical Application

DS010801-1

*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.

Ordering Information and Connection Diagrams

Temperature

Range

Output Voltage

Package

-5.0

-5.2

LM2990T-5.2

-12

-15

−40˚C to

+125˚C

LM2990T-5.0

LM2990S-5.0

LM2990T-12

LM2990S-12

LM2990T-15

LM2990S-15

TO-220

TO-263

−55˚C to

+125˚C

LM2990J-5.0-QML

5962-9571101QEA

LM2990J-12-QML

5962-9571001QEA

LM2990J-15-QML

5962-9570901QEA

J16A

LM2990WG5.0-QML

5962-9571101QXA

WG16A

DS010801

www.national.com

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中文翻译

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LM2990T-5.0 替代型号

型号	品牌	替代类型	描述	数据表
LM2990T-5.0/NOPB	TI	功能相似	LM2990 Negative Low Dropout Regulator
LM2990T-5.0	TI	功能相似	LM2990 Negative Low Dropout Regulator
LM2990S-5.0	NSC	功能相似	Negative Low Dropout Regulator

与LM2990T-5.0相关器件

型号	品牌	获取价格	描述	数据表
LM2990T-5.0/NOPB	TI	获取价格	LM2990 Negative Low Dropout Regulator
LM2990T-5.2	TI	获取价格	LM2990 Negative Low Dropout Regulator
LM2990T-5.2	NSC	获取价格	Negative Low Dropout Regulator
LM2990T-5.2/NOPB	TI	获取价格	LM2990 Negative Low Dropout Regulator
LM2990WG-12-QML	ETC	获取价格	Negative Fixed Voltage Regulator
LM2990WG-15-QML	ETC	获取价格	Negative Fixed Voltage Regulator
LM2990WG-5.0-QML	ETC	获取价格	Negative Fixed Voltage Regulator
LM2990WG5.0-QML	NSC	获取价格	Negative Low Dropout Regulator
LM2991	NSC	获取价格	Negative Low Dropout Adjustable Regulator
LM2991	TI	获取价格	LM2991 Negative Low Dropout Adjustable Regulator

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