AMS34063 Datasheet | Advanced Monolithic Systems

FEATURES - Wide Input Voltage Operating Range from 2.5V to 40V - Low Standby Current - Current Limiting - Output Switch Current of 1.5A - Output Voltage Adjustable from 1.25 to 40V - Frequency of Operation to 100k Hz DC-TO-DC CONVERTER CONTROL CIRCUIT APPLICATIONS - Step-Up Converter - Step-Down Converter - Voltage Inverting Application GENERAL DESCRIPTION The AMS34063 series is a control circuit containing the basic functions required for DC-to-DC converters. The device consists of an internal temperature pensated reference, a parator, a controlled duty cycle oscillator with an active current limit circuit, a driver and a high current output switch. Designed specifically to be incorporated in Step-Up, Step-Down and Voltage -Inverting applications, the AMS34063 requires a minimum number of external ponents. The AMS34063 is available in the 8-lead plastic SOIC and 8-lead plastic DIP packages. ORDERING INFORMATION PACKAGE TYPE 8 LEAD PDIP AMS34063P 8 LEAD SOIC AMS34063S OPER. TEMP RANGE -40°C to +85°C PIN CONNECTIONS 8 LEAD SOIC/ 8 LEAD PDIP SWITCH COLLECTOR SWITCH EMITTER TIMING CAPACITOR GND 1 2 3 4 8 7 DRIVER COLLECTOR IPK SENSE 6 VCC 5 PARATOR INVERTING INPUT Top View Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 ABSOLUTE MAXIMUM RATINGS (Note 1) Power Supply Voltage, VCC 40V parator Input Voltage Range, VIR -0.3V to +40V Switch Collector Voltage, VC(switch) 40V Switch Emitter Voltage, VE(switch) 40V Switch Collector to Emitter Voltage, VCE(switch) 40V Driver Collector Voltage, VC(driver) Switch Current, ISW Power Dissipation Maximum Junction Temperature Storage Temperature 40V 1.5A (Note 3) +125°C -65°C to +150°C ELECTRICAL CHARACTERISTICS PARAMETER Oscillator Charging Current Discharge Current Voltage Swing Discharge to Charge Current Ratio Current Limit Sense Voltage Output Switch (Note 2) Saturation Voltage, Darlington Connection Saturation Voltage DC Current Gain...