LTC4380 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operatingtemperature range, otherwise specifications are at TA = 25°C. VCC = OUT = SNS = DRN = 12V, unless otherwise noted. SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITSTMR, DRN ∆VDRN DRN Voltage (DRN – OUT) IDRN = 0.1mA, OUT = SNS = 12V l 0.7 1.5 2.5 V VDS(MAX) Overvoltage VDS Threshold (DRN – OUT) TMR = 0.8V, IDRN = 2µA 0.6 0.7 0.8 V SNS = OUT = 12V l 0.3 1.0 V ITMR(DN) TMR Pull-Down Current TMR = 0.8V l 1.25 2 2.75 µA ITMR(UP,COOL) TMR Pull-Up Current, Cool Down TMR = 2V l –1 –2 –3 µA ITMR(UP) TMR Pull-Up Current, Overvoltage TMR = 0.8V, OUT = 11V, IDRN = 5µA, ∆VSNS = 0mV l –0.8 –1.6 –2.4 µA OUT = 28V, TMR = 0.8V Small OV, Light Load IDRN = 0.1mA, ∆VSNS = 10mV l –3.5 –6.7 –11.6 µA High OV, Light Load IDRN = 1mA, ∆VSNS = 10mV l –13 –30 –61 µA Small OV, Heavy Load IDRN = 0.1mA, ∆VSNS = 40mV l –10 –20 –30 µA High OV, Heavy Load IDRN = 1mA, ∆VSNS = 40mV l –60 –120 –180 µA TMR Pull-Up Current, Overcurrent TMR = 0.8V IDRN = 0mA, OUT = 11V l –4 –6 –9 µA IDRN = 0mA, OUT = 0V l –17 –27 –34 µA Small OV, Light Load IDRN = 0.1mA, OUT = 11V l –16 –27 –38 µA High OV, Light Load IDRN = 1mA, OUT = 11V l –80 –142 –200 µA Small OV, Heavy Load IDRN = 0.1mA, OUT = 0V l –35 –50 –60 µA High OV, Heavy Load IDRN = 1mA, OUT = 0V l –130 –170 –220 µA VTMR(F) TMR Gate Off Threshold TMR Rising l 1.178 1.215 1.251 V D Retry Duty Cycle; Overvoltage, ∆VSNS = 40mV, IDRN = 5µA, OUT = 28V, VCC = 29V l 2.8 3.5 % LTC4380-2/LTC4380-4 ∆VSNS = 40mV, IDRN = 500µA, OUT = 28V, VCC = l 0.1 0.2 % 80V Retry Duty Cycle; Overcurrent, IDRN = 500µA LTC4380-2/LTC4380-4 OUT = 0V, VCC = 14V l 0.1 0.2 % OUT = 6V, VCC = 14V l 0.35 0.7 % ON ION ON Input Current VON = 1V l –1 –2 µA VON ON Input Threshold ON Rising l 0.99 1.05 1.1 V VON(HYST) ON Input Hysteresis 45 mV tON(ON) Turn-On Propagation Delay ON Steps from 0V to 1.5V, OUT = SNS = 0V l 5 25 ms tOFF(ON) Turn-Off Propagation Delay ON Steps from 1.5V to 0V, OUT = SNS = VCC l 1 5 µs Note 1: Stresses beyond those listed under Absolute Maximum Ratings Note 4: Internal clamps limit the GATE pin to a minimum of 10V above the may cause permanent damage to the device. Exposure to any Absolute OUT pin or VCC pin, or 50V (SEL = VCC) or 31.5V (SEL = GND) above the Maximum Rating condition for extended periods may affect device GND pin (LTC4380-1/LTC4380-2). Driving this pin to voltages beyond the reliability and lifetime. clamp may damage the device. Note 2: All currents into device pins are positive; all currents out of device Note 5: Total supply current is the sum of the current into the VCC, OUT, pins are negative. All voltages are referenced to GND unless otherwise SNS and DRN pins. specified. Note 6: Operating voltage is limited by the maximum GATE voltage of 86V. Note 3: Internal clamps limit the DRN pin to a minimum of 10V above the OUT and SNS pins. Rev. C For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
