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SC615A Datasheet(PDF) 3 Page - Semtech Corporation |
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SC615A Datasheet(HTML) 3 Page - Semtech Corporation |
3 / 12 page 3 © 2008 Semtech Corp. www.semtech.com POWER MANAGEMENT SC615A Parameter Symbol Conditions Min Typ Max Units Quiescent Current I Q FLASH high 3.4 5 mA FLASH low, CTRL high 2.0 4.5 mA FLASH low, CTRL low 0.1 2 μA Flash Mode Pulse Duration(2) t FLASH 3.3V < V IN < 4.2V I OUT = 500mA, VOUT > 2.8V 500 ms Flash Mode Start-Up Time(2) t F-ST t = 0 when FLASH goes high to I OUT = 90% of final value 1ms Spotlight Mode Start-Up Time(2) t S-ST t = 0 when CTRL goes high to I OUT = 90% of final value 1ms Oscillator Frequency f OSC Device Enabled 250 kHz Oscillator Frequency Accuracy Δf OSC -15 15 % Short-Circuit Output Current Limit I SC V OUT = 0V 465 mA Input Current Limit I LIMIT 3.3V < V IN < 4.2V 2.1 A V IN = 3.7V, VOUT = 3.7V, TA = 25°C 1.38 1.53 Over-Temperature Protection(2) T OT 150 °C Hysteresis 10 °C Logic Input High Threshold V IH FLASH, CTRL 1.5 V Logic Input Low Threshold V IL FLASH, CTRL 0.4 V Logic Input High Current I IH FLASH 1 20 35 μA CTRL 2 40 70 μA Logic Input Low Current I IL FLASH, CTRL 0.1 2 μA ISET Ripple Voltage(2) V PP Spotlight mode - I OUT = 200mA 25 mV FLASH mode - I OUT = 500mA 100 Notes: (1) V OUT required by the typical LED at this current. (2) Guaranteed by design - not tested in production. Electrical Characteristics (Cont.) |
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