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LTC4222CUH-TRPBF Datasheet(PDF) 4 Page - Linear Technology |
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LTC4222CUH-TRPBF Datasheet(HTML) 4 Page - Linear Technology |
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4 / 32 page  LTC4222 4 4222f ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VDD = 12V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS ΔVOV(HYST) OV Hysteresis l 16 24 32 mV ΔVUV(HYST) UV Hysteresis l 60 90 110 mV I(IN) CONFIG, FB, ON, OV and UV Input Current VIN = 3V l 0±1 μA IEN(UP) EN Pull-Up Current VEN = 0V l 510 20 μA VUV(RTH) UV Reset Threshold Voltage VUV Falling l 0.36 0.4 0.46 V ΔVUV(RHYST) UV Reset Threshold Hysteresis l 60 125 180 mV VGPIO(TH) GPIO Input Threshold VGPIO Rising l 0.8 1 1.2 V Other Pin Functions VGPIO(OL) GPIO Output Low Voltage IGPIO = 5mA, VDD2 = 2.9V l 0.25 0.4 V IGPIO(OH) GPIO Input Leakage Current VGPIO = 15V l 0±1 μA ISOURCE SOURCE Input Current SOURCE = 15V l 70 115 170 μA tP(GATE) Input (ON, OV, UV, EN) to GATE Off Propagation Delay l 35 μs tD(GATE) GATE Turn-On Delay ON UV, OV, EN Overcurrent Auto-Retry l l l 75 4.2 4 100 5 8 125 6.7 μs ms s VTIMERL(TH) Timer Low Threshold l 0.18 0.2 0.22 V VTIMERH(TH) Timer High Threshold l 1.215 1.235 1.255 V ITIMER(UP) TIMER Pull-Up Current l 90 100 110 μA ITIMER(DOWN) TIMER Pull-Down Current for OC Auto-Retry l 1.6 2.15 2.6 μA ITIMER(UP/DOWN) TIMER Pin OC Auto-Retry Duty Cycle l 38 50 58 N/A ISS Soft-Start Ramp Pull-Up Current Ramping Waiting for GATE to Slew l l 7.5 0.5 10 0.75 12.5 0.95 μA μA ADC RES Resolution (No Missing Codes) l 10 Bits VFS Full-Scale Voltage (1023 • VLSB)(VDD – SENSE) SOURCE ADIN l l l 64 32 1.28 mV V V LSB LSB Step Size (VDD – SENSE) SOURCE ADIN l l l 62.5 31.25 1.25 μV mV mV VOS Offset Error (VDD – SENSE) SOURCE ADIN l l l ±3 ±2 ±2 LSB LSB LSB INL Integral Nonlinearity (Note 5) l ±0.5 LSB TUE Total Unadjusted Error/Full-Scale Error (VDD – SENSE) SOURCE ADIN l l l ±1.5 ±1 ±1 % % % RADIN ADIN Sampling Resistance VADIN = 1.28V l 12 M Ω IADIN ADIN Input Current VADIN = 1.28V l 0 ±0.1 μA Conversion Rate 15 Hz |
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