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LTC4012-3 Datasheet(PDF) 3 Page - Linear Technology |
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LTC4012-3 Datasheet(HTML) 3 Page - Linear Technology |
3 / 28 page 40123fb LTC4012-3 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Charge Voltage Regulation VTOL VBAT Accuracy (See Test Circuits) C-Grade I-Grade l l –0.5 –0.8 –1.0 0.5 0.8 1.0 % % % IVFB VFB Input Bias Current VFB = 1.2V ±20 nA RON FBDIV On Resistance ILOAD = 100µA l 85 190 Ω ILEAK-FBDIV FBDIV Output Leakage Current SHDN = 0V, FBDIV = 0V l –1 0 1 µA VBOV VFB Overvoltage Threshold l 1.235 1.281 1.32 V Charge Current Regulation ITOL Charge Current Accuracy with RIN = 3.01k, 6V < BAT < 18V RPROG = 26.7k C-Grade I-Grade l l –4 –5 –9.5 4 5 9.5 % % % VSENSE = 0mV, PROG = 1.2V –12.75 –11.67 –10.95 µA AI Current Sense Amplifier Gain (PROG ∆I) with RIN = 3.01k, 6V < BAT < 18V VSENSE Step from 0mV to 5mV, PROG = 1.2V –1.78 –1.66 –1.54 µA VCS-MAX Maximum Peak Current Sense Threshold Voltage per Cycle (RIN = 3.01k) ITH = 2V, C-Grade ITH = 2V, I-Grade ITH = 5V l l l 140 125 195 325 250 265 430 mV mV mV VC10 C/10 Indicator Threshold Voltage PROG Falling 340 400 460 mV VREV Reverse Current Threshold Voltage PROG Falling 180 253 295 mV Input Current Regulation VCL Current Limit Threshold CLP – CLN C-Grade I-Grade l l 97 96 92 100 100 103 104 108 mV mV mV ICLN CLN Input Bias Current CLN = CLP ±100 nA VICL ICL Indicator Threshold (CLP – CLN) – VCL –8 –5 –2 mV CLP Supply OVR Operating Voltage Range 6 28 V VUVLO CLP Undervoltage Lockout Threshold CLP Increasing l 4.65 4.85 5.25 V VUV(HYST) UVLO Threshold Hysteresis 200 mV ICLPO CLP Operating Current CLP = 20V, No Gate Loads 2 3 mA Shutdown VIL SHDN Input Voltage Low l 300 mV VIH SHDN Input Voltage High l 1.4 V RIN SHDN Pull-Down Resistance 40 k Ω ICLPS CLP Shutdown Current CLP = 12V, DCIN = 0V SHDN = 0V l 15 350 26 500 µA µA ILEAK-BAT BAT Leakage Current SHDN = 0V or DCIN = 0V, 0V ≤ CSP = CSN = BAT ≤ 18V l –1.5 0 1.5 µA ILEAK-CSN CSN Leakage Current SHDN = 0V or DCIN = 0V, 0V ≤ CSP = CSN = BAT ≤ 20V l –1.5 0 1.5 µA ILEAK-CSP CSP Leakage Current SHDN = 0V or DCIN = 0V, 0V ≤ CSP = CSN = BAT ≤ 20V l –1.5 0 1.5 µA ILEAK-SW SW Leakage Current SHDN = 0V or DCIN = 0V, 0V ≤ SW ≤ 20V l –1 0 2 µA elecTrical characTerisTics The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. DCIN = 20V, BAT = 12V, GND = 0V unless otherwise noted. (Note 2) |
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