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TPS40193DRCTG4 датащи(PDF) 2 Page - Texas Instruments |
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TPS40193DRCTG4 датащи(HTML) 2 Page - Texas Instruments |
2 / 35 page www.ti.com DESCRIPTION (continued) DEVICE RATINGS ABSOLUTE MAXIMUM RATINGS RECOMMENDED OPERATING CONDITIONS PACKAGE DISSIPATION RATINGS TPS40192, TPS40193 SLUS719 – MARCH 2007 Short circuit detection is done by sensing the voltage drop across the low-side MOSFET when it is on and comparing it with a user selected threshold of 100 mV, 200 mV or 280 mV. The threshold is set with a single external resistor connected from COMP to GND. This resistor is sensed at startup and the selected threshold is latched. Pulse by pulse limiting (to prevent current runaway) is provided by sensing the voltage across the high-side MOSFET when it is on and terminating the cycle when the voltage drop rises above a fixed threshold of 550 mV. When the controller senses an output short circuit, both MOSFETs are turned off and a timeout period is observed before attempting to restart. This provides limited power dissipation in the event of a sustained fault. ORDERING INFORMATION TAPE AND REEL TJ PACKAGE FREQUENCY (kHz) PART NUMBER QUANTITY 250 TPS40193DRCT 300 3000 TPS40193DRCR -40 °C to 85°C Plastic 10-Pin SON (DRC) 250 TPS40192DRCT 600 3000 TPS40192DRCR over operating free-air temperature range unless otherwise noted (1) TPS40192/TPS40193 UNIT VDD, ENABLE –0.3 to 20 SW –5 to 25 Input voltage range BOOT, HDRV –0.3 to 30 V BOOT-SW, HDRV-SW (differential from BOOT or HDRV to SW) -0.3 to 6 COMP, FB, BP5, LDRV, PGD –0.3 to 6 TJ Operating junction temperature range –40 to 150 °C Tstg Storage temperature –55 to 150 (1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. MIN NOM MAX UNIT VVDD Input voltage 4.5 18 V TJ Operating Junction temperature -40 125 °C RθJA High-K Board (1) Power Rating (W) Power Rating (W) PACKAGE AIRFLOW (LFM) ( °C/W) TA = 25°C TA = 85°C 0 (Natural Convection) 47.9 2.08 0.835 DRC 200 40.5 2.46 0.987 400 38.2 2.61 1.04 (1) Ratings based on JEDEC High Thermal Conductivity (High K) Board. For more information on the test method, see TI Technical Brief SZZA017. 2 Submit Documentation Feedback |
Аналогичный номер детали - TPS40193DRCTG4 |
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Аналогичное описание - TPS40193DRCTG4 |
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