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AP3440ABN111 датащи(PDF) 8 Page - Asahi Kasei Microsystems |
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AP3440ABN111 датащи(HTML) 8 Page - Asahi Kasei Microsystems |
8 / 17 page [AP3440] 016008997-E-00 2016/10 - 8 - 10. Timing Chart Figure 6. Timing Chart The AP3440 begin start-up in Soft-Start mode when “H” signal is input to the EN pin while the VIN pin is 4.1V or more. Soft-start operation is controlled by over current and voltage limitations. Each of thresholds change according to the conditions shown below and return to OCL and OVP threshold values at Normal Operation after Soft-Start is completed. During Soft-Start Normal Operation Over Current Limit (OCL) threshold SS Pin Voltage < 0.6V: OCL (7.85Atyp) × 1/2 OCL (7.85Atyp) SS Pin Voltage ≥ 0.6V: OCL (7.85Atyp) × SS voltage/1.2V Over Voltage Protection(OVP) threshold SS Pin Voltage: Vout/1.2V OVP (Vout×134%typ) An open drain Nch-MOSFET of the PG pin(hereinafter called as PG_MOS) is turned off when 10ms is passed after VOUT became a level within power-good range following soft-start completion. The PG_MOS is turned on if VOUT is out of the power-good range for more than 2us continuously. PG_MOS is turned off in 10ms after VOUT is returned into power-good range again. Vout Discharge VIN EN 3V SS OCL OVP OCL×100% Vout×134% VO1,VO2 PG 10ms +4.67% -4.41% 2us 0% OCL×50% 0% Vout×100% 3V 10ms 2us 10ms threshold threshold signal |
Аналогичный номер детали - AP3440ABN111 |
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Аналогичное описание - AP3440ABN111 |
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