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TPS53314 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS53314 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 31 page  TPS53314 SLUSAK3 – MAY 2011 www.ti.com ELECTRICAL CHARACTERISTICS Over recommended free-air temperature range, VDD = 12 V (Unless otherwise noted) PARAMETER CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE AND SUPPLY CURRENT VIN pin power conversion input VVIN 3 15 V voltage VDD Supply input voltage 4.5 25 V IVIN(leak) VIN pin leakage current VEN = 0 V 1 µA VDD current, TA = 25°C, No Load, VEN = 5 V, IVDD VDD supply current 420 590 µA VVFB = 0.630 V IVDDSDN VDD shutdown current VDD current, TA = 25°C, No Load, VEN = 0 V 10 µA INTERNAL REFERENCE VOLTAGE VFB voltage, CCM condition(1) 0.6000 V TA = 25°C 0.597 0.600 0.603 VVFB VFB regulation voltage TA = 0°C to 85°C 0.5952 0.600 0.6048 V TA = -40°C to 85°C 0.594 0.600 0.606 IVFB VFB input current VVFB = 0.630 V, TA = 25°C 0.002 0.2 µA LDO OUTPUT VVREG LDO output voltage 0 mA ≤ IVREG ≤ 30 mA 4.77 5.0 5.35 V IVREG LDO output current(1) Maximum current allowed from LDO 30 mA VDO LDO drop out voltage VDD = 4.5 V, IVREG = 30 mA 295 mV BOOT STRAP SWITCH VFBST Forward voltage VVREG-VBST, IF = 10 mA, TA = 25°C 0.1 0.2 V IVBSTLK VBST leakage current VVBST = 23 V, VLL = 17 V, TA = 25°C 0.01 1.5 µA DUTY AND FREQUENCY CONTROL tOFF(min) Minimum off time TA = 25°C 150 260 400 ns VVIN = 17 V, VOUT = 0.6 V, RRF = 0 Ω to VREG, tON(min) Minimum on time 35 TA = 25°C (1) SOFTSTART RMODE = 39 kΩ 0.7 RMODE = 100 kΩ 1.4 Internal SS time from VOUT = 0 to tSS ms VOUT = 95% RMODE = 200 kΩ 2.8 RMODE = 470 kΩ 5.6 POWERGOOD PG in from lower 92.5% 96% 98.5% VTHPG PG threshold PG in from higher 107.5% 110% 112.5% PG hysteresis 2.5% 5% 7.8% RPG PG transistor on-resistance 15 30 55 Ω tPGDEL PG Delay after soft-start 0.8 1 1.2 ms (1) Ensured by design. Not production tested. 4 Copyright © 2011, Texas Instruments Incorporated |
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