LT1610 ELECTRICAL CHCARA TERISTICS The ● denotes specifications which apply over the specified temperaturerange, otherwise specifications are at TA = 25 ° C. Commercial grade 0 ° C to 70 ° C, VIN = 1.5V, VSHDN = VIN, unless otherwise noted.(Note 2)PARAMETERCONDITIONSMINTYPMAXUNITS Switch Current Limit (Note 3) 450 600 900 mA Switch VCESAT ISW = 300mA 300 350 mV ● 400 mV Switch Leakage Current VSW = 5V 0.01 1 µA SHDN Input Voltage High 1 V SHDN Input Voltage Low 0.3 V SHDN Pin Bias Current VSHDN = 3V 10 µA VSHDN = 0V 0.01 0.1 µA The ● denotes specifications which apply over the specified temperature range, otherwise specifications are at TA = 25 ° C.Industrial grade – 40 ° C to 85 ° C, VIN = 1.5V, VSHDN = VIN, unless otherwise noted.PARAMETERCONDITIONSMINTYPMAXUNITS Minimum Operating Voltage TA = 85°C 0.9 1 V TA = – 40°C 1.25 V Maximum Operating Voltage 8 V Feedback Voltage ● 1.20 1.23 1.26 V Quiescent Current 30 60 µA Quiescent Current in Shutdown VSHDN = 0V, VIN = 2V 0.01 0.5 µA VSHDN = 0V, VIN = 5V 0.01 1.0 µA FB Pin Bias Current ● 27 80 nA Reference Line Regulation 2V ≤ VIN ≤ 8V (– 40°C) 0.03 0.15 %/V 2V ≤ VIN ≤ 8V (85°C) 0.2 %/V Error Amp Transconductance ∆I = 2µA 25 µmhos Error Amp Voltage Gain 100 V/V Switching Frequency (Note 4) ● 1.4 1.7 2 MHz Maximum Duty Cycle (Note 4) 77 80 95 % ● 75 95 % Switch Current Limit 450 600 900 mA Switch VCESAT ISW = 300mA 300 350 mV ● 400 mV Switch Leakage Current VSW = 5V 0.01 1 µA SHDN Input Voltage High 1 V SHDN Input Voltage Low 0.3 V SHDN Pin Bias Current VSHDN = 3V 10 µA VSHDN = 0V 0.01 0.1 µA Note 1: Absolute Maximum Ratings are those values beyond which the life Note 3: Current limit guaranteed by design and/or correlation to static test. of a device may be impaired. Current limit is affected by duty cycle due to ramp generator. See Block Note 2: The LT1610C is guaranteed to meet specified performance from Diagram. 0°C to 70°C and is designed, characterized and expected to meet these Note 4: Not 100% tested at 85°C. extended temperature limits, but is not tested at – 40°C and 85°C. The LT1610I is guaranteed to meet the extended temperature limits. 3
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