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SC4624EVB-SO Datasheet(PDF) 6 Page - Semtech Corporation |
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SC4624EVB-SO Datasheet(HTML) 6 Page - Semtech Corporation |
6 / 20 page 6 2008 Semtech Corp. www.semtech.com POWER MANAGEMENT SC4624 Operation Typical Performance Characteristics Typical Performance Characteristics Figure 3. Shutdown by V IN@0A Figure 4. Shutdown by V IN@4A Figure 5. Transient Response@ 0 to 4A Figure 6. Ripple and Stability@4A Figure 1. Start Up by V IN@0A Figure 2. Start Up by V IN@4A Circuit condition: Application circuit#1, 5V IN, 1VOUT Vin Vout Start up by Vin Test condition: 5Vin, 1Vo, Io=0A PGOOD SS V IN SS V OUT PGOOD 5V/DIV 5V/DIV 5V/DIV 0.5V/DIV 10ms/DIV 5V/DIV 5V/DIV 0.5V/DIV 5V/DIV Vin Vout Start up by Vin Test condition: 5Vin, 1Vo, Io=0A PGOOD SS V IN SS V OUT PGOOD 10ms/DIV Vin Vout Shutdown by Vin Test condition: 5Vin, 1Vo, Io=0A PGOOD SS 5V/DIV 5V/DIV 5V/DIV 0.5V/DIV V IN SS V OUT PGOOD 5ms/DIV Vin Vout Shutdown by Vin Test condition: 5Vin, 1Vo, Io=4A PGOOD SS 5V/DIV 5V/DIV 5V/DIV 0.5V/DIV V IN SS V OUT PGOOD 1ms/DIV Transient response Test condition: 5Vin, 1Vo, Io=0 to 4A R=F=2.5A/us,T1=T2=0.1ms Io Vout Vout IOUT V OUT l OUT 2A/DIV 50mV/DIV 20us/DIV V OUT V PHASE 20mV/DIV 2.0V/DIV Stability and Ripple Vphase Vout Test condition: 5Vin, 1Vo, Io=4A, (Operating stably) 1us/DIV |
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