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ADP3168 Datasheet(PDF) 4 Page - Analog Devices |
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ADP3168 Datasheet(HTML) 4 Page - Analog Devices |
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4 / 24 page  ADP3168 Rev. B | Page 4 of 24 Parameter Symbol Conditions Min Typ Max Unit CURRENT-LIMIT COMPARATOR ILIMIT Output Voltage Normal Mode VILIMIT(NM) EN > 1.7 V, RILIMIT = 250 kΩ 2.9 3 3.1 V Shutdown Mode VILIMIT(SD) EN > 0.8 V, IILIMIT = −100 µA 400 mV Output Current, Normal Mode IILIMIT(NM) EN > 1.7 V, RILIMIT = 250 kΩ 12 µA Current-Limit Threshold Voltage VCL VCSREF − VCSCOMP, RILIMIT = 250 kΩ 105 125 145 mV Current-Limit Setting Ratio VCL/IILIMIT 10.4 mV/µA DELAY Normal Mode Voltage VDELAY(NM) 2.9 3 3.1 V DELAY Overcurrent Threshold VDELAY(OC) 1.7 1.8 1.9 V Latch-Off Delay Time tDELAY RDELAY = 250 kΩ, CDELAY = 4.7 nF 600 µs SOFT START Output Current, Soft-Start Mode IDELAY(SS) During startup, DELAY < 2.8 V 15 20 25 µA Soft-Start Delay Time tDELAY(SS) RDELAY = 250 kΩ, CDELAY= 4.7 nF 350 µs VID code = 011111 ENABLE INPUT Input Low Voltage VIL(EN) 0.4 V Input High Voltage VIH(EN) 0.8 V Input Current, Input Voltage Low IIL(EN) EN = 0 V −1 +1 µA Input Current, Input Voltage High IIH(EN) EN = 1.25 V 10 25 µA POWER-GOOD COMPARATOR Undervoltage Threshold VPWRGD(UV) Relative to nominal DAC output −200 −250 −325 mV Overvoltage Threshold VPWRGD(OV) Relative to nominal DAC output 90 150 200 mV Output Low Voltage VOL(PWRGD) IPWRGD(SINK) = 4 mA 225 400 mV Power-Good Delay Time VID Code Changing 100 250 µs VID Code Static 200 ns Crowbar Trip Point VCROWBAR Relative to nominal DAC output 90 150 200 mV Crowbar Reset Point Relative to FBRTN 450 550 650 mV Crowbar Delay Time tCROWBAR Overvoltage to PWM going low VID Code Changing 100 250 µs VID Code Static 400 ns PWM OUTPUTS Output Voltage Low VOL(PWM) IPWM(SINK) = 400 µA 160 500 mV Output Voltage High VOH(PWM) IPWM(SOURCE) = 400 µA 4.0 5.0 V SUPPLY DC Supply Current 5 8 mA UVLO Threshold Voltage VUVLO VCC rising 6.5 6.9 7.3 V UVLO Hysteresis 0.7 0.9 1.1 V |
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