Datasheet > SPX2947S

SPX2947S

更新时间： 2024-11-24 22:59:15

品牌	Logo	应用领域
西伯斯 - SIPEX		稳压器
页数	文件大小	规格书
11页	101K
描述
500mA Low Drop Out Voltage Regulator with Shutdown

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中文翻译

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数据手册

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SPX2947S 数据手册

SPX2945

400mA Low Dropout Voltage Regulator with Shutdown

FEATURES

1.2V to 20V

+V_IN

V_OUT

■ Output 3.3V, 5.0V at 400mA Output

■ Very Low Quiescent Current, 100µA

■ Low Dropout Voltage, 420mV at 400mA

■ Extremely Tight Load and Line Regulation

■ Very Low Temperature Coefficient

■ Current & Thermal Limiting

100K

OFF

0.01µF

10µF

R₁

SPX2945

______

ERROR

SHUTDOWN

INPUT

ERROR

OUTPUT

GND

V_REF

R₂

Adjustable Regulator

■ Error Flag Warns Of Output Dropout

■ Logic-Controlled Electronic Shutdown

V_IN

OUT

■ Output Programmable From 1.24V to 20V

(for SO-8)

SPX2945

2.2 µF

GND

0.1 µF

5V Regulator Circuit

DESCRIPTION

TheSPX2945isalowpowervoltageregulator.Thisdeviceisanexcellentchoiceforuseinbattery-powered

applications such as cordless telephones, radio control systems, and portable computers. The SPX2945

features very low quiescent current (100µA Typ.) and very low dropout voltage. This includes a tight initial

tolerance of 1% max and very low output temperature coefficient, making the SPX2945 useful as a low-

power voltage reference.

The error flag output feature is used as power-on reset for warning of a low output voltage, due to a falling

voltage input of batteries. Another feature is the logic-compatible shutdown input which enables the

regulator to be switched on and off. The SPX2945 is offered in 3-pin TO-220 package, SO-8 (same pin

out as SPX2951), SOT-223, surface mount 3-Pin TO-252, 3-Pin TO-263 packages and 5-Pin TO-263.

The regulator output voltage (of the 8-pin SO-8) may be pin-strapped for a 3.3V and 5.0V or programmed

from1.24Vto20Vwithanexternalpairofresistors. LookforSPX2951for150mAandSPX2954for250mA

applications.

TO-252 (R)

TO-263-5 (T5)

8-Pin Surface Mount

SOT-223 (M3)

(S)

TO-220-3 (U)

TO-263-3 (T)

V_OU

V_IN

SPX2945

5 Pin TO-263

SPX2945

SENS

SHUTDOWN

FEEDBACK

5V/ 3.3V TAP

ERRO

SPX2945

2 3 4 5

V_IN

V_OU

V_INGN V_OU

V_INGN

V_OU

V_INGN V_OU

Rev. B Date:01/20/04

SPX2945 400mA Low Dropout Voltage Regulator with Shutdown

12 3 4 5 6 7...11

中文翻译

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与SPX2947S相关器件

型号	品牌	获取价格	描述	数据表
SPX2947T3	SIPEX	获取价格	500mA Low Drop Out Voltage Regulator with Shutdown
SPX2947T5	SIPEX	获取价格	500mA Low Drop Out Voltage Regulator with Shutdown
SPX2947U3	SIPEX	获取价格	500mA Low Drop Out Voltage Regulator with Shutdown
SPX2947U5	SIPEX	获取价格	500mA Low Drop Out Voltage Regulator with Shutdown
SPX2950	SIPEX	获取价格	150mA Low Dropout Voltage Regulator
SPX29500	SIPEX	获取价格	5A Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response Time
SPX29500T-1.8	SIPEX	获取价格	5A Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response Time
SPX29500T-1.8/TR	EXAR	获取价格	Regulator, 1 Output, BIPolar,
SPX29500T-1-8/TR	SIPEX	获取价格	Fixed Positive LDO Regulator, 1.8V, 0.6V Dropout, PSSO3, TO-263, 3 PIN
SPX29500T-2.5	SIPEX	获取价格	5A Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response Time

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