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LTC4012-1 Datasheet(PDF) 4 Page - Linear Technology |
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LTC4012-1 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 28 page  LTC4012/ LTC4012-1/LTC4012-2 4012fa 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) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS 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 INTVDD Regulator INTVDD Output Voltage No Load l 4.85 5 5.15 V ∆VDD Load Regulation IDD = 20mA –0.4 –1 % IDD Short-Circuit Current (Note 5) INTVDD = 0V 50 85 130 mA Switching Regulator IITH ITH Current ITH = 1.4V –40/+90 µA fTYP Typical Switching Frequency 467 550 633 kHz fMIN Minimum Switching Frequency CLOAD = 3.3nF 20 25 kHz DCMAX Maximum Duty Cycle CLOAD = 3.3nF 98 99 % tR-TG TGATE Rise Time CLOAD = 3.3nF, 10% – 90% 60 110 ns tF-TG TGATE Fall Time CLOAD = 3.3nF, 90% – 10% 50 110 ns tR-BG BGATE Rise Time CLOAD = 3.3nF, 10% – 90% 60 110 ns tF-BG BGATE Fall Time CLOAD = 3.3nF, 90% – 10% 60 110 ns tNO TGATE, BGATE Non-Overlap Time CLOAD = 3.3nF, 10% – 10% 110 ns PowerPath Control IDCIN DCIN Input Current 0V ≤ DCIN ≤ CLP l –10 60 µA VFTO Forward Turn-On Voltage (DCIN Detection Threshold) DCIN-CLP, DCIN rising l 15 60 mV VFR Forward Regulation Voltage DCIN-CLP l 15 25 35 mV VRTO Reverse Turn-Off Voltage DCIN-CLP, DCIN falling l –45 –25 –15 mV VOL(INFET) INFET Output Low Voltage, Relative to CLP DCIN-CLP = 0.1V, IINFET =1µA –6.5 –5 V VOH(INFET) INFET Output High Voltage, Relative to CLP DCIN-CLP = –0.1V, IINFET =–5µA –250 250 mV tIF(ON) INFET Turn-On Time To CLP-INFET > 3V, CINFET = 1nF 85 180 µs tIF(OFF) INFET Turn-Off Time To CLP-INFET < 1.5V, CINFET = 1nF 2.5 6 µs Float Voltage Select Inputs (LTC4012-1/LTC4012-2 Only) VIL Input Voltage Low 0.5 V VIH Input Voltage High 3.5 V IIN Input Current 0V ≤ VIN ≤ 5V –10 10 µA Indicator Outputs VOL Output Voltage Low ILOAD = 100µA, PROG = 1.2V 500 mV ILEAK Output Leakage SHDN = 0V, DCDIV = 0V, VOUT = 20V l –10 10 µA IC10 CHRG C/10 Current Sink CHRG = 2.5V l 15 25 38 µA |
Similar Part No. - LTC4012-1_15 |
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Similar Description - LTC4012-1_15 |
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