UC2842AN

The UC2842AN is one member of the UC2842 family which is designed as the currentmodE PWM controller that providesthe necessary features to implement off-line or DC to DC fixed frequency current mode controlschemes with a minimal externalparts count.

Features of the UC2842AN are:(1)optimized for off-line and DC to DC converters low start-up current (< 1 mA) automatic feed forward compensation; (2)pulse-by-pulsecurrent limiting ; (3)enhanced load response characteristics ; (4)under-voltage lockout with hysteresis; (5)double pulse suppression; (6)high current totempoleoutput ; (7)internally trimmed bandgap reference; (8)500 KHz operation ; (9)low RO ERRORAMP.

The absolute maximum ratings of the UC2842AN can be summarized as:(1)supply voltage (low impedance source):30 V;(2)supply voltage (Ii < 30mA):self limiting;(3)output current:±1 A;(4)output energy (capacitive load):5 J;(5)analog inputs (pins 2, 3):-0.3 to 6.3 V;(6)error amplifier output sink current:10 mA;(7)power dissipation at Tamb 3 50 °C (minidip, DIP-14): 1 W;(8)power dissipation at Tamb 3 25 °C (SO14):725 mW;(9)storage temperature range:-65 to 150 °C;(10)lead temperature (soldering 10s):300 °C. If you want to know more information such as the electrical characteristics about the UC2842AN, please download the datasheet in www.seekic.com or www.chinaicmart.com .