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SC4624EVB-SO Datasheet(PDF) 4 Page - Semtech Corporation |
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SC4624EVB-SO Datasheet(HTML) 4 Page - Semtech Corporation |
4 / 20 page 4 2007 Semtech Corp. www.semtech.com POWER MANAGEMENT SC4624 Electrical Characteristics (Cont.) Unless otherwise specified, V IN= VCC=SYNC/EN=3.3V, ROSC=51.1KΩ, RISET=27.4KΩ, TA = -40°C to 85°C. Parameter Symbol Conditions Min Typ Max Units Thermal Shutdown Thermal Shutdown Trip Point T OTP Temperature Rising 160 °C Thermal Shutdown Hysteresis T OTP_HYS 10 °C Synchronization, Enable Input SYNC/EN Threshold V ENL Logic Low 0.8 V V ENH Logic High 2.0 V Frequency Range, SYNC F SYNC 20% Higher than F OSC 200 2000 kHz Oscillator Osciilator Frequency Range F OSC 200 2000 kHz Osciilator Frequency Accuracy R OSC= 51.1KΩ 415 500 585 kHz R OSC=51.1KΩ, TA=TJ=25°C 435 500 565 kHz Ramp Peak to Valley(1) V PV 1.0 V Ramp Peak Voltage(1) V P 1.25 V Ramp Valley Voltage(1) V V 0.25 V Soft Start, Current Limit Soft-Start Charge Current I SS 6 µA ISET Bias Voltage V ISET R ISET = 27.4KΩ 0.45 0.55 0.61 V Over Current Trip I IST R ISIT = 57.6KΩ 1.9 2.55 3.1 A Output UVLO V OUV VFB drop 0.3 V Hiccup period(1) T OCHP 131072 clks Error Amplifier Error Amplifier Open Loop Voltage Gain (1) 100 dB Error Amplifier Unity Gain Bandwidth(1) 10 MHz Output Voltage Slew Rate, COMP(1) 4 V/µs Source Output Current, COMP FB = 0.4V 20 mA Sink Output Current, COMP FB = 0.6V 25 mA Output Voltage High, COMP FB = 0.4V, I COMP = -1mA 2.5 V |
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