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SC1464 Datasheet(PDF) 3 Page - Semtech Corporation |
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SC1464 Datasheet(HTML) 3 Page - Semtech Corporation |
3 / 10 page © 2000 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 60mA PROGRAMMABLE FIXED FREQUENCY CHARGE PUMP DOUBLER SC1464 PRELIMINARY - August 11, 2000 3 Parameter Symbol Test Conditions MIN TYP MAX Units Time to Regulation at Turn-on (2)(3) t ON I O = 0 to 60 mA freq = 260kHz 420 1000 µs Input High Threshold V ih All input pins 1.3 V Input Low Threshold V il All input pins 0.4 V Inrush Current (3) I INRUSH Upon application of V IN, Maximum average current over 10 periods 750 mA Over Temperature protection (3) O.T. 170 °C Over Temperature Hysteresis (3) O.T.H 10 °C ELECTRICAL CHARACTERISTICS Unless specified, T A = -40°C to 85°C, EN = VIN, CBucket = 2.2µF(ESR = 0.1τ), CIN , COUT = 3.3µF(ESR = 1τ), VIN = 3V±5%, VOUT = 5.2V to 6.2V. NOTES: (1) All electrical characteristics are for the application circuit on page 2. (2) Soft start functionality is performed along with short circuit protection. If V OUT is less than VIN - 200mV, then all switches are turned off and V OUT is charged with a 70mA current source from VIN. W hen VOUT reaches VIN - 200mV, then a current limit version of the switches are turned on until V OUT reaches VIN + a PMOS threshold, at which point all switches are enabled. (3) Guaranteed by design. |
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