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LTC4253IGN Datasheet(PDF) 2 Page - Linear Technology |
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LTC4253IGN Datasheet(HTML) 2 Page - Linear Technology |
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2 / 32 page  LTC4253 2 4253f Current into VIN (100µs Pulse) ........................... 100mA Input/Output (Except SENSE and DRAIN) Voltage ...................................– 0.3V to 16V SENSE Voltage ..........................................– 0.6V to 16V Current Out of SENSE Pin (20 µs Pulse)............ –200mA VIN, DRAIN Pin Minimum Voltage ........................ –0.3V Current into DRAIN Pin (100 µs Pulse) ................. 20mA Maximum Junction Temperature .......................... 125 °C Operating Temperature Range LTC4253C ............................................... 0 °C to 70°C LTC4253I ............................................ – 40 °C to 85°C Storage Temperature Range ................. – 65 °C to 150°C Lead Temperature (Soldering, 10 sec).................. 300 °C ORDER PART NUMBER GN PART MARKING TJMAX = 125°C, θJA = 130°C/W Consult LTC Marketing for parts specified with wider operating temperature ranges. 4253 4253I LTC4253CGN LTC4253IGN ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1), All voltages referred to VEE ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VZ VIN to VEE Zener Voltage IIN = 2mA q 12 13 14.5 V RZ VIN to VEE Zener Dynamic Impedance IIN = (2mA Thru 30mA) 5 Ω IIN VIN Supply Current UV/OV = 4V, VIN = (VZ – 0.3V) q 0.8 2 mA VLKO VIN Undervoltage Lockout Coming Out of UVLO (rising VIN) q 9.2 12 V VLKH VIN Undervoltage Lockout Hysteresis 1V VIH TTL Input High Voltage q 2V VIL TTL Input Low Voltage q 0.8 V VHYST TTL Input Buffer Hysterisis 600 mV ILEAK TTL Input Leakage Current Input = 0V q ±0.1 ±10 µA IRESET RESET Input Current VEE ≤ VRESET ≤ VIN q ±0.1 ±10 µA IEN EN2, EN3 Input Current VEN = 4V q 120 180 µA VEN = 0V q ±0.1 ±10 µA VSS SS Voltage After End of SS Timing Cycle 2.2 V ISS SS Pin Current UV = OV = 4V, VSENSE = VEE, VSS = 0V (SOURCING) 22 µA UV= OV = 0V, VSENSE = VEE, VSS = 2V (SINKING) 28 mA RSS SS Output Impedance 100 k Ω VCB Circuit Breaker Current Limit Voltage VCB = (VSENSE – VEE) q 40 50 60 mV VACL Analog Current Limit Voltage VACL = (VSENSE – VEE) q 80 100 120 mV VFCL Fast Current Limit Voltage VFCL = (VSENSE – VEE) q 150 200 300 mV VOS Analog Current Limit Offset Voltage 10 mV VACL + VOS Ratio (VACL + VOS) to SS Voltage 0.05 V/V VSS 1 2 3 4 5 6 7 8 TOP VIEW GN PACKAGE 16-LEAD PLASTIC SSOP 16 15 14 13 12 11 10 9 EN2 PWRGD2 PWRGD1 VIN RESET SS SENSE VEE PWRGD3 EN3 SQTIMER TIMER UV OV DRAIN GATE |
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