SC4624MLTRT View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC4624MLTRT

Low Input Voltage, High Efficiency, 4A Integrated FET Synchronous Step down DC/DC Regulator

Semtech Corporation 

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SC4624

POWER MANAGEMENT

OTyppeicratlioPnerformancSetarCt uhpabryaVcitneristics

Circuit condition: ApplicTeasttcioondnitiocni:r5cViun,i1tV#o,1Io,=05A VIN, 1VOUT

5V/DIV

5V/DIV

VVinIN

SSSS

VVoOuUTt

5V/DIV

5V/DIV

Start up by Vin

Test condition: 5Vin, 1Vo, Io=0A

0.5V/DIV

5V/DIV

10ms/DIV

Figure 1S. hSutatdrotwUnpbbyyVVinIN@0A

Test condition: 5Vin, 1Vo, Io=0A

PPGGOOODOD

0.5V/DIV

5V/DIV

10ms/DIV

FigureS2h.uStdtaowrtnUbpy bVyinVIN@4A

Test condition: 5Vin, 1Vo, Io=4A

VVinIN

SSSS

VVoOuUtT

PPGGOOODOD

5V/DIV

5V/DIV

0.5V/DIV

5V/DIV

5ms/DIV

Figure T3r.aSnhsuietndtorwesnpobnysVeIN@0A

Test condition: 5Vin, 1Vo, Io=0 to 4A

R=F=2.5A/us,T1=T2=0.1ms

VVIiNn

SSSS

VVOoUuT t

PPGGOOOODD

5V/DIV

5V/DIV

0.5V/DIV

5V/DIV

50mV/DIV

Vout

VVOoUuTt

Io

20mV/DIV

1ms/DIV

Figure 4S.taSbhiluittydaonwdnRbipypVleIN@4A

Test condition: 5Vin, 1Vo, Io=4A,

(Operating stably)

VVinIN

SSSS

VOUT

Vout

PPGGOOODOD

VoVutOUT

2A/DIV

20us/DIV

IlOOUUTT

2.0V/DIV

1us/DIV

V VphaPsHeASE

Figure 5. Transient Response@ 0 to 4A

 2008 Semtech Corp.



Figure 6. Ripple and Stability@4A

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