MC34163

MC34163, MC33163 Switching Regulators Step-Up/Down, Inverting 3.4 A The MC34163 series are monolithic power switching regulators that contain the primary functions required for dc−to−dc converters. This series is specifically designed to be incorporated in step−up, step−down, and voltage−inverting applications with a minimum number of external components. These devices consist of two high gain voltage feedback comparators, temperature compensated reference, controlled duty cycle oscillator, driver with bootstrap capability for increased efficiency, and a high current output switch. Protective features consist of cycle−by−cycle current limiting, and internal thermal shutdown. Also included is a low voltage indicator output designed to interface with microprocessor based systems. These devices are contained in a 16 pin dual−in−line heat tab plastic package for improved thermal conduction. Features Output Switch Current in Excess of 3.0 A Operation from 2.5 V to 40 V Input Low Standby Current Precision 2% Reference Controlled Duty Cycle Oscillator Driver with Bootstrap Capability for Increased Efficiency Cycle−by−Cycle Current Limiting Internal Thermal Shutdown Protection Low Voltage Indicator Output for Direct Microprocessor Interface Heat Tab Power Package Moisture Sensitivity Level (MSL) Equals 1 Pb−Free Packages are Available* Ipk Sense 8 VCC 7 Timing Capacitor 6 - ILimit + + OSC 9 Driver Collector 10 Switch Collector 11 5 GND 4 Control Logi...