RT9701CB datasheet(8/12 Pages) RICHTEK

8 / 12 page

RT9701

www.richtek-ic.com.tw

DS9701-05 October 2001

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Time (500

µS/Div)

CH1: VIN : 1V/Div

CH2: VOUT : 1V/Div

RL = 30

Ω, CL = 1µF

UVLO at Rising

CH1

CH2

Time (10mS/Div)

UVLO at Falling

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2 >

RL = 30

Ω, CL = 1µF

CH1: VIN : 1V/Div

CH2: VOUT : 1V/Div

CH1

CH2

*Test Circuit 2

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Inrush Short Circuit Response

µS/Div

CH1 : VIN : 2V/Div

CH2 : IL : 10A/Div

IPEAK : depend on ESR & ESL

CH1

CH2

C IN = 1µF

CL = 1000µF

VDROP=1.2V, depend on CIN ESR

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Soft-start Short Circuit Response

µS/Div

CH1 : VIN : 2V/Div

CH2 : IOUT : 1A/Div

CIN = 1µF

CH1

CH2

Ramped Load Response

1mS/Div

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VIN = 5V, CL = 1

µF

CH2: IOUT : 500mA/Div

VOUT = 5V

VOUT = 4.6V

Current Limit Threshold

CH1

CH2

Current Limit Response

µS/Div

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2 >

VIN = 5V, CL = 0.1

µF

RL = 1 ohm

CH2: ILOAD : 1A/Div

Loading trigger

CH1

CH2

Ω

IOUT : 1A/Div

1.1A

4.9V

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