DC-DC Controller UC3845 SMD SOIC-14 IC

Description

Features OPTIMIZED FOR OFF-LINE AND DC TO DC CONVERTERS LOW START-UP CURRENT (< 1 mA) AUTOMATIC FEED FORWARD COMPENSATION PULSE-BY-PULSECURRENT LIMITING ENHANCED LOAD RESPONSE CHARACTERISTICS UNDER-VOLTAGE LOCKOUTWITH HYSTERESIS DOUBLE PULSE SUPPRESSION HIGH CURRENT TOTEM POLE OUTPUT INTERNALLY TRIMMED BANDGAP REFERENCE 500 KHz OPERATION LOW Ro ERRORAMP Specifications: Symbol Parameter Value Unit V i V i I O Supply Voltage (low impedance source) Supply Voltage (Ii < 30mA) Output Current 30 Self Limiting ±1 V A E O Output Energy (capacitive load) Analog Inputs (pins 2, 3) 5 – 0.3 to 6.3 uJ V Error Amplifier Output Sink Current 10 mA Ptot Power Dissipation at Tamb £ 50 °C (minidip, DIP-14) 1 W Ptot Power Dissipation at Tamb £ 25 °C (SO14) 725 mW Tstg Storage Temperature Range – 65 to 150 °C T L Lead Temperature (soldering 10s) 300 °C UC3845 Datasheet

From the supplier's page.