IP3524B Datasheet | Seme LAB

FEATURES - - - - - - - - - - - - Pin patible with IP1524 Series 7 to 40 volt operation 5 volt reference trimmed to ±1% Undervoltage lockout Excellent external sync capability Wide current limit mon mode range +5 Volt error amplifier mon mode PWM data latch Full double-pulse suppression logic 50ns shutdown function Dual 200m A, 60V output transistors Fully specified over temperature J Package - 16 Pin Ceramic DIP N Package - 16 Pin Plastic DIP D Package - 16 Pin Plastic (300) SOIC Order Information Part Number IP1524B IP2524B IP3524B J- Pack 16 Pin N- Pack 16 Pin D- 16 16 Pin Temp. Range -55 to +125°C -25 to +85°C 0 to +70°C Note: To order, add the package identifier to the part number. eg. IP1524BJ IP3524BD- 16 ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated) +VIN Input Voltage Collector Voltage Logic Inputs Current Limit Sense Inputs Oscillator Charging Current PD PD TJ TSTG TL Power Dissipation Power Dissipation TA = 25°C Derate @ TA > 50°C TC = 25°C Derate @ TC > 25°C +40V +60V - 0.3 to +5.5V - 0.3 to +VIN 5m A 1W 10m W/°C 2W 16m W/°C See Ordering Information - 65 to +150°C (soldering, 10 seconds) +300°C Prelim. 3/95 Operating Junction Temperature Storage Temperature Range Lead Temperature Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612. DESCRIPTION The IP1524B is a pulse width modulator for switching power supplies which features improved performance over industry standards like the SG1524. A direct pin-for-pin replacement for the earlier device, it bines advanced processing techniques and circuit design to provide improved reference accuracy/ and extended mon mode range at the error amplifier and current limit inputs. A DC-coupled flip-flop eliminates triggering and glitch problems, and a PWM data latch prevents edge oscillations. The circuit incorporates true digital shutdown for high speed response, while an undervoltage lockout circuit prevents spurious outputs when the supply voltage is too low for stable operation....