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LTC3862HFE-1-PBF Datasheet(PDF) 3 Page - Linear Technology |
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LTC3862HFE-1-PBF Datasheet(HTML) 3 Page - Linear Technology |
3 / 40 page LTC3862-1 3 38621f ORDER INFORMATION (Notes 2, 3) The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, RUN = 2V and SS = open, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Supply Input and INTVCC Linear Regulator VIN VIN Supply Voltage Range l 8.5 36 V IVIN VIN Supply Current Normal Mode, No Switching Shutdown (Note 5) VRUN = 0V l l 1.8 30 3.0 80 mA μA INTVCC LDO Regulator Output Voltage 9.5 10.0 10.5 V dVINTVCC(LINE) Line Regulation 12V < VIN < 36V 0.002 0.02 %/V dVINTVCC(LOAD) Load Regulation Load = 0mA to 20mA –2 % VUVLO INTVCC UVLO Voltage Rising INTVCC Falling INTVCC 7.5 7.0 V V 3V8 LDO Regulator Output Voltage 3.8 V Switcher Control Loop VFB Reference Voltage VITH = 0.8V (Note 6) E-Grade (Note 3) I-Grade and H-Grade (Note 3) l l 1.210 1.199 1.223 1.223 1.235 1.248 V V dVFB/dVIN Feedback Voltage VIN Line Regulation VIN = 8.5V to 36V (Note 6) ±0.002 0.01 %/V dVFB/dVITH Feedback Voltage Load Regulation VITH = 0.5V to 1.2V (Note 6) 0.01 0.1 % gm Transconductance Amplifier Gain VITH = 0.8V (Note 6), ITH Pin Load = ±5μA 660 μMho f0dB Error Amplifier Unity-Gain Crossover Frequency (Note 7) 1.8 MHz VITH Error Amplifier Maximum Output Voltage (Internally Clamped) VFB = 1V, No Load 2.7 V Error Amplifier Minimum Output Voltage VFB = 1.5V, No Load 50 mV IITH Error Amplifier Output Source Current –30 μA Error Amplifier Output Sink Current 30 μA IFB Error Amplifier Input Bias Currents (Note 6) –50 –200 nA VITH(PSKIP) Pulse Skip Mode Operation ITH Pin Voltage Rising ITH Voltage (Note 6) Hysteresis 0.275 25 V mV ISENSE(ON) SENSE Pin Current 0.01 2 μA VSENSE(MAX) Maximum Current Sense Input Threshold VSLOPE = Float, Low Duty Cycle (Note 3) l 65 60 75 75 85 90 mV mV VSENSE(MATCH) CH1 to CH2 Maximum Current Sense Threshold Matching VSLOPE = Float, Low Duty Cycle (Note 3) (VSENSE1 – VSENSE2) l –10 10 mV ELECTRICAL CHARACTERISTICS LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3862EUH-1#PBF LTC3862EUH-1#TRPBF 38621 24-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C LTC3862IUH-1#PBF LTC3862IUH-1#TRPBF 38621 24-Lead (5mm × 5mm) Plastic QFN –40°C to 125°C LTC3862HUH-1#PBF LTC3862HUH-1#TRPBF 38621 24-Lead (5mm × 5mm) Plastic QFN –40°C to 150°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ |
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