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TPS28225DRBT Fiches technique(PDF) 6 Page - Texas Instruments |
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TPS28225DRBT Fiches technique(HTML) 6 Page - Texas Instruments |
6 / 30 page www.ti.com ELECTRICAL CHARACTERISTICS (1) TPS28225 SLUS710 – MAY 2006 V DD = 7.2 V, EN/PG pulled up to VDD by 100-kΩ resistor, TA = TJ = –40°C to 125°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT UNDER VOLTAGE LOCKOUT Rising threshold VPWM = 0 V 3.2 3.5 3.8 Falling threshold VPWM = 0 V 2.7 3.0 V Hysteresis 0.5 BIAS CURRENTS IDD(off) Bias supply current VEN/PG = low, PWM pin floating 350 µA IDD Bias supply current VEN/PG = high, PWM pin floating 500 INPUT (PWM) VPWM = 5 V 185 IPWM Input current µA VPWM = 0 V –200 PWM 3-state rising threshold(2) 1.0 V PWM 3-state falling threshold VPWM PEAK = 5 V 3.4 3.8 4.0 tHLD_R 3-state shutdown Hold-off time 250 ns TMIN PWM minimum pulse to force UGATE pulse CL = 3 nF at UGATE , VPWM = 5 V 30 ENABLE/POWER GOOD (EN/PG) Enable high rising threshold PG FET OFF 1.7 2.1 Enable low falling threshold PG FET OFF 0.8 1.0 V Hysteresis 0.35 0.70 Power good output VDD = 2.5 V 0.2 UPPER GATE DRIVER OUTPUT (UGATE) Source resistance 500 mA source current 1.0 2.0 Ω Source current (2) VUGATE-PHASE = 2.5 V 2.0 A tRU Rise time CL = 3 nF 10 ns Sink resistance 500 mA sink current 1.0 2.0 Ω Sink current (2) VUGATE-PHASE = 2.5 V 2.0 A tFU Fall time CL = 3 nF 10 ns LOWER GATE DRIVER OUTPUT (LGATE) Source resistance 500 mA source current 1.0 2.0 Ω Source current(2) VLGATE = 2.5 V 2.0 A tRL Rise time(2) CL = 3 nF 10 ns Sink resistance 500 mA sink current 0.4 1.0 Ω Sink current(2) VLGATE = 2.5 V 4.0 A Fall time(2) CL = 3 nF 5 ns SWITCHING TIME tDLU UGATE turn-off propagation Delay CL = 3 nF 14 tDLL LGATE turn-off propagation Delay CL = 3 nF 14 ns tDTU Dead time LGATE turn-off to UGATE turn-on CL = 3 nF 14 tDTL Dead time UGATE turn-off to LGATE turn-on CL = 3 nF 14 BOOTSTRAP DIODE VF Forward voltage Forward bias current 100 mA 1.0 V THERMAL SHUTDOWN Rising threshold(2) 150 160 170 Falling threshold(2) 130 140 150 °C Hysteresis 20 (1) Typical values for TA = 25°C (2) Not tested in production 6 Submit Documentation Feedback |
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Description similaire - TPS28225DRBT |
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