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LTC1643H Datasheet(PDF) 2 Page - Linear Technology |
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LTC1643H Datasheet(HTML) 2 Page - Linear Technology |
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2 / 16 page  2 LTC1643L/LTC1643L-1/LTC1643H ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION ORDER PART NUMBER (Note 1) Supply Voltages 12VIN ................................................................ 13.2V VEEIN .............................................................. –13.2V Input Voltage (Pin 5) ................ – 0.3V to (12VIN + 0.3V) Output Voltages (Pins 6, 7) ...... – 0.3V to (12VIN + 0.3V) Analog Voltages (Pins 3, 4, 9, 10 to 14) ........ – 0.3V to (12VIN + 0.3V) VEEOUT ............................................ –13.2V to + 0.3V 12VOUT .............................................. – 0.3V to 13.2V Operating Temperature Range LTC1643LC/LTC1643L-1C/LTC1643HC ... 0 °C to 70°C LTC1643LI/LTC1643HI ...................... – 40 °C to 85°C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C TOP VIEW GN PACKAGE 16-LEAD NARROW PLASTIC SSOP 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 12VIN VEEIN 3VOUT TIMER ON/ON* FAULT PWRGD GND 12VOUT VEEOUT 5VOUT 5VIN 5VSENSE GATE 3VSENSE 3VIN * ON FOR LTC1643H, ON FOR LTC1643L TJMAX = 150°C, θJA = 135°C/ W Consult LTC Marketing for parts specified with wider operating temperature ranges. LTC1643HCGN LTC1643LCGN LTC1643L-1CGN LTC1643HIGN LTC1643LIGN DC ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IDD V12VIN Supply Current ON = 3V, ON = GND q 3.5 8 mA VLKO Undervoltage Lockout 12VIN q 7 9.5 10.8 V 3VIN q 2.25 2.5 2.75 V 5VIN q 2.25 2.5 2.75 V VFB Foldback Current Limit Voltage VFB = (V5VIN – V5VSENSE), V5VOUT = 0V q 4 7.5 12 mV VFB = (V5VIN – V5VSENSE), V5VOUT > 4V q 40 53 65 mV VFB = (V3VIN – V3VSENSE), V3VOUT = 0V q 4 7.5 12 mV VFB = (V3VIN – V3VSENSE), V3VOUT > 2V q 40 53 65 mV tCB Circuit Breaker Trip Filter Time 14.6 µs ICP GATE Pin Output Current Charge Pump On, VGATE = GND, FAULT = High q – 20 – 50 – 100 µA Charge Pump Off, VGATE = 5V, FAULT = High 200 µA Charge Pump Off, VGATE = 2V, FAULT = Low q 3 10 20 mA ∆VGATE External Gate Voltage (V12VIN – VGATE) 100 200 mV VDROP Internal Switch Voltage Drop (V12VIN – V12VOUT), 0 °C ≤ TA ≤ 70°C q 250 600 I12VOUT = 500mA – 40 °C ≤ TA ≤ 85°C q 250 750 mV (VEEOUT – VEEIN), IVEEIN = 100mA q 120 250 mV ICL Current Foldback 12VIN = 12V, 12VOUT = 0V q 50 250 500 mA 12VIN, 12VOUT = 12V q 525 850 1500 mA VEEIN = –12V, VEEOUT = 0V (LTC1643L/LTC1643H Only) q 100 160 500 mA VEEIN, VEEOUT = – 12V q 225 450 800 mA TTS Thermal Shutdown Temperature 150 °C VTH Power-Good Threshold Voltage V12VOUT 0 °C ≤ TA ≤ 70°C q 10.8 11.1 11.4 V LTC1643H/LTC1643L Only – 40 °C ≤ TA ≤ 85°C q 10.4 11.1 11.4 V VEEOUT 0 °C ≤ TA ≤ 70°C q – 10.2 – 10.5 – 10.8 V LTC1643H/LTC1643L Only – 40 °C ≤ TA ≤ 85°C q – 10.0 – 10.5 – 10.8 V The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. V12VIN = 12V, VEE = – 12V, V3VIN = 3.3V, V5VIN = 5V. (Note 2) GN PART MARKING 1643H 1643L 1643L1 1643HI 1643LI |
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