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LTC4100 Datasheet(PDF) 3 Page - Linear Technology |
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LTC4100 Datasheet(HTML) 3 Page - Linear Technology |
3 / 24 page LTC4100 3 sn4100 4100is The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VDCIN = 20V, VDD = 3.3V, VBAT = 12V unless otherwise noted. (Note 4) ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Current Comparators ICMP and IREV ITMAX Maximum Current Sense Threshold (VCSP-VBAT)VITH = 2.4V q 140 165 200 mV ITREV Reverse Current Threshold (VCSP-VBAT)– 30 mV Current Sense Amplifier, CA2 Transconductance 1 mmho Source Current Measured at ITH, VITH = 1.4V –40 µA Sink Current Measured at ITH, VITH = 1.4V 40 µA Current Limit Amplifier Transconductance 1.5 mmho VCLP Current Limit Threshold q 93 100 107 mV ICLP CLP Input Bias Current 100 nA Voltage Error Amplifier, EA Transconductance 1 mmho Sink Current Measured at ITH, VITH = 1.4V 36 µA OVSD Overvoltage Shutdown Threshold as a Percent q 102 107 110 % of Programmed Charger Voltage Input P-Channel FET Driver (INFET) DCIN DetectionThreshold (VDCIN-VCLP) DCIN Voltage Ramping Up q 0.0 0.17 0.25 V from VCLP-0.05V Forward Regulation Voltage (VDCIN-VCLP) q 25 50 mV Reverse Voltage Turn-Off Voltage (VDCIN-VCLP) q –60 –25 mV INFET “ON” Clamping Voltage (VDCIN-VINFET)IINFET = 1µA q 5 5.8 6.5 V INFET “OFF” Clamping Voltage (VDCIN-VINFET)IINFET = –25µA 0.25 V Oscillator fOSC Regulator Switching Frequency 255 300 345 kHz fMIN Regulator Switching Frequency in Drop Out Duty Cycle ≥ 98% 20 25 kHz DCMAX Regulator Maximum Duty Cycle VCSP = VBAT 98 99 % Gate Drivers (TGATE, BGATE) VTGATE High (VCLN-VTGATE)ITGATE = –1mA 50 mV VBGATE High IBGATE = –1mA 5.6 10 V VTGATE Low (VCLN-VTGATE)ITGATE = 1mA 5.6 10 V VBGATE Low IBGATE = 1mA 50 mV TGATE Transition Time TGTR TGATE Rise Time CLOAD = 3000pF, 10% to 90% 50 110 ns TGTF TGATE Fall Time CLOAD = 3000pF, 10% to 90% 50 100 ns BGATE Transition Time BGTR BGATE Rise Time CLOAD = 3000pF, 10% to 90% 40 90 ns BGTF BGATE Fall Time CLOAD = 3000pF, 10% to 90% 40 80 ns VTGATE at Shutdown (VCLN-VTGATE)ITGATE = –1µA 100 mV VBGATE at Shutdown ITGATE = 1µA 100 mV |
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Similar Description - LTC4100 |
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