UC2843AQ, UC2842AQ Datasheet - Texas Instruments

UC2843AQ CURRENT-MODE PWM CONTROLLER

SGLS164 * APRIL 2003 D 8-PIN PACKAGE (TOP VIEW) COMP VFB ISENSE RT/CT 1 2 3 4 8 VREF 7 VCC 6 OUTPUT 5 GND D 14-PIN PACKAGE (TOP VIEW) COMP NC VFB NC ISENSE NC RT/CT 1 2 3 4 5 6 7 14 VREF 13 NC 12 VCC 11 VC 10 OUTPUT 9 GND 8 PWR GND The UC2842A/3A/4A/5A family of control ICs is a pin.

UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ CURRENT-MODE PWM CONTROLLER D Extended Temperature Performance of 40°C to 125°C D Optimized for Off-line and DC to DC Converters D Low Start Up Current (<0.5 mA) D Trimmed Oscillator Discharge Current D Automatic Feed Forward Compensation D Pulse-by-Pulse Current Limiting D Enhanced Load Response Characteristics D Under-Voltage Lockout With Hysteresis D Double Pulse Suppression D High Current Totem Pole Output D Internally Trimmed Bandgap Referenc.

UC2843AQ Features

* to control current mode switched mode power supplies, this family has the following improved features. Start up current is guaranteed to be less than 0.5 mA. Oscillator discharge is trimmed to 8.3 mA. During under voltage lockout, the output stage can sink at least 10 mA at less than 1.2 V for VCC o

UC2842AQ-etcTI.pdf