GDTL494 Datasheet | GTM

Description V O LTA G E M O D E P WM C O N T R O L C I R C U I T The GDTL494 incorporates all the functions required in the construction of a pulse-width modulation switching circuit. Designed Primarily for switching power supply control or DC-DC convectors, it offers the systems engineer the flexibility to tailor control circuitry to its own application. - plete PWM power control circuitry - Unmitted outputs for 200 m A sink or source current - Output control selects single ended or push pull operation - Internal circuitry prohibits double pulses over total range. - Easy synchronization. Features Package Dimensions REF. A A1 A2 b b1 b2 b3 c Millimeter Min. Max. 0.381 3.175 0.406 0.356 1.270 0.762 0.203 5.334 3.429 0.508 0.508 1.778 1.143 0.356 REF. c1 D E E1 e HE L S Millimeter Min. Max. 0.203 18.92 6.096 7.493 2.413 8.509 3.175 0 0.279 19.69 6.604 8.001 2.667 9.525 3.683 15 Absolute Maximum Ratings (Unless otherwise noted all is over operating free air temperature range) PARAMETER Supply Voltage (note1) Amplifier Input Voltage Collector output Voltage Collector output Current Continuous Total Dissipation at (or for below) free air Temperature(note 2) 25 Operating Temperature Range Storage Temperature Range Lead Temperature 1.6mm from Case for 60 Sec. Vcc Vi Vo Ico PD Topr Tstg Tcase SYMBOL 41 Vcc+0.3 41 250 1000 0 TO 70 -65 TO 150 300 VALUE V V V m A m W UNIT Note1: All voltage values, except differential voltages are with respect to the network ground terminal. Note2:For operation above 25 free-air temperature, the dissipation derates with 9.2m W/ . 1/5 .. ISSUED DATE :2003/05/26 REVISED DATE :2004/10/05B Remended Operating Conditions Parameter Supply Voltage Amplifier Input Voltage Collector Output Voltage Collector Output Current(each Transistor) Current into Feedback Timing Capacitor Timing Resistor Oscillator Frequency Operating Free-Air Temperature Symbol MIN Vcc Vi Vo Ic If CT RT fosc Ta 0.47 1.8 1 0 7 -0.3 VALUE MAX 40 Vcc-2 40 200 0.3 10000 500 300...