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TPS68000DBTR Datasheet(PDF) 2 Page - Texas Instruments |
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TPS68000DBTR Datasheet(HTML) 2 Page - Texas Instruments |
2 / 13 page www.ti.com DESCRIPTION (CONTINUED) ABSOLUTE MAXIMUM RATINGS DISSIPATION RATINGS RECOMMENDED OPERATING CONDITIONS TPS68000 SLVS524 – OCTOBER 2005 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. To start the lamp, an automatic strike control is implemented. It smoothly increases the lamp voltage by sweeping the operating frequency across the self resonance frequency of the transformer-series capacitor resonant circuit. During this time the maximum lamp voltage is limited and regulated by a voltage control loop until the lamp current increases to a value allowing the current control loop to take over control. The lamp current is regulated over a wide current range. To set the lamp brightness, analog and PWM dimming circuits are implemented. Analog and PWM dimming can be used independent of each other to control lamp brightness over a wide range. To protect the circuit during fault conditions, for example broken, disconnected, or shorted lamps, overvoltage protection and overcurrent protection circuits are implemented. To protect the TPS68000 from overheating, an internal temperature sensor is implemented that triggers controller turn-off at an excessive device temperature. The device is packaged in a 30-pin TSSOP package measuring 6,4 mm x 7,8 mm (DBT). ORDERING INFORMATION TA PACKAGE PART NUMBER(1) –40 °C to 85°C 30-Pin TSSOP TPS68000DBT (1) The DBT package is available taped and reeled. Add R suffix to device type (e.g., TPS68000DBTR) to order quantities of 2000 devices per reel. over operating free-air temperature range (unless otherwise noted) (1) TPS68000 Input voltage range on VCC, EN, FAULT –0.3 V to 33 V Input voltage range on SYNC, SET, PH, STC, ABR, BBR, BF, BC, VREF, VA-, VAO, CA-, CAO –0.3 V to 6 V Input voltage range on VSEN, CSEN, OCP –6 V to 6 V Input voltage range on GD, GB, V5 –0.3 V to 6 V maximum differential voltage between GA, V5A and SA 6V maximum differential voltage between GC, V5C and SC 6V maximum differential voltage between SA and PGND 35V maximum differential voltage between SC and PGND 35V Operating virtual junction temperature range, TJ –40 °C to 150°C Storage temperature range Tstg –65 °C to 150°C (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 uner "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. THERMAL RESISTANCE POWER RATING DERATING FACTOR POWER RATING POWER RATING PACKAGE θ JA TA≤ 25°C ABOVE TA = 25°C TA≤ 70°C TA≤ 85°C DBT 63.9 °C/W 1565 mW 16 mW/ °C 860 mW/ °C 626 mW/ °C MIN NOM MAX UNIT VI Supply voltage at VCC 8.0 30 V TA Operating free air temperature range –40 85 °C TJ Operating virtual junction temperature range –40 125 °C 2 |
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