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TPS62102 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS62102 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 25 page TPS62100, TPS62101, TPS62102, TPS62103 MULTIMODE LOW POWER BUCK CONVERTER SLUS446B – MAY 2000 – REVISED DECEMBER 2000 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range, TA = –40 C to 85 C, TA = TJ, typical values are at TA = 25 C, VIN = 7.2 V, MODE = 1 (constant frequency), SD/SYNC = 0 V. (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Pulse Width Modulator Section TPS62100, 300 kHz version, VIN = 5 V 225 300 375 kHz SW switching frequency TPS62101, 600 kHz version, VIN = 5 V 450 600 750 kHz SW switching frequency TPS62102, 1 MHz version, VIN = 5 V 0.75 1 1.25 MHz TPS62103, 2 MHz version, VIN = 5 V 1.5 2 2.5 MHz TPS62100, 300 kHz version, VIN = 5 V, See Notes 1 and 2 490 kHz Maximum sync frequency TPS62101, 600 kHz version, VIN = 5 V, See Notes 1 and 2 966 kHz Maximum sync. frequency TPS62102, 1 MHz version, VIN = 5 V, See Notes 1 and 2 1.61 MHz TPS62103, 2 MHz version, VIN = 5 V, See Notes 1 and 2 2.5 MHz Maximum duty cycle COMP = 2.5 V 100% Minimum duty cycle COMP = 0 V 0% Output Switch Section SW NFET RDS(on) ISW = 500 mA VIN = 7.2 V 0.3 0.6 Ω SW PFET RDS(on) ISW = –500 mA VIN = 7.2 V 0.5 1 Ω SW NFET RDS(on) ISW = 500 mA VIN = 3.6 V 0.6 1.2 Ω SW PFET RDS(on) ISW = –500 mA VIN = 3.6 V 0.8 1.6 Ω SW output leakage SW = 4.5V VIN = 9 V –10 0 10 µA SW charge switch current limit 1 Terminates pulse 0.65 0.95 1.25 A SW charge switch current limit 2 Initiates soft-start, See Note 1 0.75 1.15 1.55 A SW current, light-load mode Peak inductor current 112 160 208 mA Shutdown and Synchronization Section SD/SYNC threshold 0.5 1 2.3 V SD/SYNC input current SD/SYNC = 0 V –100 0 100 nA SD/SYNC input current SD/SYNC = 7.2 V –1 0 1 µA Maximum synchronization pulse width 25 37 µs Minimum synchronization pulse width 50 ns Three–State Mode Control Input Section Light-load MODE threshold 225 300 410 mV Constant frequency MODE threshold 475 600 750 mV Open circuit MODE voltage 375 450 510 mV MODE input-low current Mode = 0 V –20 –12 –5 µA MODE input-high current Mode = 1.4 V 10 22 33 µA NOTES: 1. Ensured by design. Not production tested. 2. Minimum synchronization frequency must be less than the natural running frequency. |
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