Datasheet > 电源电路 > 线性稳压器IC> LM2990SX-5.0/NOPB

LM2990SX-5.0/NOPB

更新时间： 2024-11-23 12:18:43

品牌	Logo	应用领域
德州仪器 - TI		线性稳压器IC 调节器电源电路输出元件
页数	文件大小	规格书
20页	2027K
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LM2990 Negative Low Dropout Regulator

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LM2990SX-5.0/NOPB 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	D2PAK
包装说明：	TO-263, SMSIP3H,.55TB	针数：	4
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	0.73
Samacsys Confidence：	4	Samacsys Status：	Released
Samacsys PartID：	746318	Samacsys Pin Count：	4
Samacsys Part Category：	Integrated Circuit	Samacsys Package Category：	Other
Samacsys Footprint Name：	KTT0003B	Samacsys Released Date：	2018-12-10 23:42:06
Is Samacsys：	N	可调性：	FIXED
最大回动电压 1：	1 V	标称回动电压 1：	0.6 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-PSSO-G3
JESD-609代码：	e3	长度：	10.16 mm
最大电网调整率：	0.04%	最大负载调整率：	0.04%
湿度敏感等级：	3	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-263
封装等效代码：	SMSIP3H,.55TB	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	包装方法：	TR
峰值回流温度（摄氏度）：	245	认证状态：	Not Qualified
调节器类型：	FIXED NEGATIVE SINGLE OUTPUT LDO REGULATOR	座面最大高度：	4.79 mm
子类别：	Other Regulators	表面贴装：	YES
技术：	BIPOLAR	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	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：	30
最大电压容差：	5%	宽度：	8.64 mm
Base Number Matches：	1

LM2990SX-5.0/NOPB 数据手册

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LM2990

www.ti.com

SNVS093D –JUNE 1999–REVISED APRIL 2013

LM2990 Negative Low Dropout Regulator

Check for Samples: LM2990

FEATURES

DESCRIPTION

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

ampere negative voltage regulator available with fixed

output voltages of −5, −5.2, −12, and −15V.

•

5% Output Accuracy over Entire Operating

Range

•

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 an ensured worst-case maximum of 1V over the

entire operating temperature 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 ensured to ±5% over load,

and temperature extremes.

Dropout Voltage Typically 0.6V at 1A Load

Low Quiescent Current

Internal Short Circuit Current Limit

Internal Thermal Shutdown with Hysteresis

Functional Complement to the LM2940 Series

APPLICATIONS

•

Post Switcher Regulator

Local, On-Card, Regulation

Battery Operated Equipment

The LM2990 is short-circuit proof, and thermal

shutdown includes hysteresis to enhance the

reliability of the device when overloaded for an

extended period of time. The LM2990 is available in a

3-lead package and is rated for operation over the

automotive temperature range of −40°C to +125°C.

Typical Application

*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.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...20

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LM2990SX-5.0/NOPB 替代型号

型号	品牌	替代类型	描述	数据表
LM2990S-5.0/NOPB	TI	类似代替	LM2990 Negative Low Dropout Regulator
LM2990S-5.0	TI	类似代替	LM2990 Negative Low Dropout Regulator
LM2990T-5.0	TI	类似代替	LM2990 Negative Low Dropout Regulator

与LM2990SX-5.0/NOPB相关器件

型号	品牌	获取价格	描述	数据表
LM2990T-12	NSC	获取价格	Negative Low Dropout Regulator
LM2990T-12	TI	获取价格	LM2990 Negative Low Dropout Regulator
LM2990T-12/NOPB	TI	获取价格	LM2990 Negative Low Dropout Regulator
LM2990T-15	TI	获取价格	LM2990 Negative Low Dropout Regulator
LM2990T-15	NSC	获取价格	Negative Low Dropout Regulator
LM2990T-15/NOPB	TI	获取价格	LM2990 Negative Low Dropout Regulator
LM2990T-5.0	TI	获取价格	LM2990 Negative Low Dropout Regulator
LM2990T-5.0	NSC	获取价格	Negative Low Dropout Regulator
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

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