UTCTL494

UTC TL494 LINEAR INTEGRATED CIRCUIT VOLTAGE MODE PWM CONTROL CIRCUIT DESCRIPTION The UTC TL494 incorporates all the functions required in the construction of a pulse-width modulation switching circuit. Designed primarily for switching power supply control or DCDC convectors, it offers the systems engineer the flexibility to tailor control circuitry to its own application. SOP-16 FEATURES *Complete PWM power control circuitry *Uncommitted outputs for 200 mA sink or source current *Output control selects single ended or push pull operation *Internal circuitry prohibits double pulses over total range *Easy synchronization DIP-16 ABSOLUTE MAXIMUM RATINGS(Unless otherwise noted all is over operating free air temperature range) PARAMETER Supply Voltage(note 1) Amplifier Input Voltage Collector Output Voltage Collector Output Current Continuous Total Dissipation at(or for below) 25°C Free Air Temperature(note 2) Operating Temperature Range Storage Temperature Range Lead Temperature 1.6mm from Case for 60 Sec. SYMBOL VCC VI VO ICO PD Topr Tstg Tcase VALUE 41 VCC+0.3 41 250 1000 0 TO 70 -65 TO 150 300 UNIT V V V mA mW °C °C °C note 1: All voltage values, except differential voltages are with respect to the network ground terminal. note 2:For operation above 25°C free-air temperature, the dissipation derates with 9.2mW/°C. UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R103-004,A UTC TL494 BLOCK DIAGRAM LINEAR INTEGRATED CIRCUIT Input control 13 8 C1 Pulse Steering Flip-Fl...