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LTC4253IGN Datasheet(PDF) 4 Page - Linear Technology |
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LTC4253IGN Datasheet(HTML) 4 Page - Linear Technology |
4 / 32 page LTC4253 4 4253f Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to VEE unless otherwise specified. tSQ SQTIMER Default Ramp Period SQTIMER Pin Floating, 250 µs VSQTMR Ramps from 0.5V to 3.5V tSS SS Default Ramp Period SS Pin Floating, VSS Ramps from 0.2V to 2V 250 µs tPLLUG UV Low to GATE Low 0.4 µs tPHLOG OV High to GATE Low 0.4 µs 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 TYPICAL PERFOR A CE CHARACTERISTICS IIN vs Temperature IIN vs VIN rZ vs Temperature VZ vs Temperature Undervoltage Lockout VLKO vs Temperature Undervoltage Lockout Hysterisis VLKH vs Temperature TEMPERATURE ( °C) –55 –35 –15 5 25 45 65 85 105 125 4253 G01 10 9 8 7 6 5 4 3 2 IIN = 2mA TEMPERATURE ( °C) –55 –35 –15 5 25 45 65 85 105 125 4253 G02 14.5 14.0 13.5 13.0 12.5 12.0 IIN = 2mA VIN (V) 0 5 10 15 20 4253 G03 1000 100 10 1 0.1 TA = 85°C TA = 125°C TA = –40°C TA = 25°C TEMPERATURE ( °C) –55 –35 –15 5 25 45 65 85 105 125 4253 G04 1000 950 900 850 800 750 700 650 600 550 500 VIN = VZ – 0.3V TEMPERATURE ( °C) –55 –35 –15 5 25 45 65 85 105 125 4253 G05 11.0 10.5 10.0 9.5 9.0 8.5 8.0 7.5 7.0 TEMPERATURE ( °C) –55 –35 –15 5 25 45 65 85 105 125 4253 G06 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 |
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