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LTC3812IFE-5-PBF Datasheet(PDF) 4 Page - Linear Technology |
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LTC3812IFE-5-PBF Datasheet(HTML) 4 Page - Linear Technology |
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4 / 32 page  LTC3812-5 4 38125fb Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC3812E-5 is guaranteed to meet performance specifications from 0°C to 85°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. The LTC3812I-5 is guaranteed to meet performance specifications over the full –40°C to 125°C operating temperature range. Note 3: TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula: LTC3812-5: TJ = TA + (PD • 38°C/W) Note 4: The LTC3812-5 is tested in a feedback loop that servos VFB to the reference voltage with the ITH pin forced to a voltage between 1V and 2V. Note 5: The dynamic input supply current is higher due to the power MOSFET gate charging being delivered at the switching frequency (QG • fOSC). Note 6: Guaranteed by design. Not subject to test. Note 7: This IC includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may impair device reliability. Note 8: ICC is the sum of current into NDRV and INTVCC. The l denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, INTVCC = VBOOST = VRNG = VEXTVCC = VNDRV = 5V, VFCB = VSW = 0V, unless otherwise specified. ELECTRICAL CHARACTERISTICS PARAMETER LTC3810 LTC3810-5 LTC3812-5 Maximum VIN 100V 60V 60V MOSFET Gate Drive 6.35V to 14V 4.5V to 14V 4.5V to 14V INTVCC UV+ 6.2V 4.2V 4.2V INTVCC UV– 6V 4V 4V SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IPGOOD PGOOD Leakage Current VPGOOD = 5V 0 2 μA PG Delay PGOOD Delay VFB Falling 120 μs VCC Regulators VEXTVCC EXTVCC Switchover Voltage EXTVCC Rising EXTVCC Hysterisis l 4.5 0.1 4.7 0.25 0.4 V V VINTVCC,1 INTVCC Voltage from EXTVCC 6V < VEXTVCC < 15V 5.2 5.5 5.8 V ΔVEXTVCC,1 VEXTVCC - VINTVCC at Dropout ICC = 20mA, VEXTVCC = 5V 75 150 mV ΔVLOADREG,1 INTVCC Load Regulation from EXTVCC ICC = 0mA to 20mA, VEXTVCC = 10V 0.01 % VINTVCC,2 INTVCC Voltage from NDRV Regulator Linear Regulator in Operation 5.2 5.5 5.8 V ΔVLOADREG,2 INTVCC Load Regulation from NDRV ICC = 0mA to 20mA, VEXTVCC = 0 0.01 % INDRV Current into NDRV Pin VNDRV – VINTVCC = 3V 20 40 60 μA INDRVTO Linear Regulator Timeout Enable Threshold 210 270 350 μA VCCSR Maximum Supply Voltage Trickle Charger Shunt Regulator 15 V ICCSR Maximum Current into NDRV/INTVCC Trickle Charger Shunt Regulator, INTVCC ≤ 16.7V (Note 8) 10 mA |
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