D1067

D1067 DESCRIPTION The DMS1067 is a monolithic step-down switch mode converter with a built in internal power MOSFET. It achieves 2A continuous output current over a wide input supply range with excellent load and line regulation. The DMS1067 requires a minimum number of readily available standard external components. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-bycycle current limiting and thermal shutdown. In shutdown mode the regulator draws 25µA of supply current. FEATURES 2A Output Current 0.22Ω Internal Power MOSFET Switch Stable with Low ESR Output Ceramic Capacitors Up to 95% Efficiency 25µA Shutdown Mode Fixed 420KHz Frequency Thermal Shutdown Cycle-by-Cycle Over Current Protection Wide 4.75 to 25V Operating Input Range Output Adjustable from 1.22V to 21V Programmable Under Voltage Lockout APPLICATIONS Distributed Power Systems Battery Chargers Pre-Regulator for Linear Regulators PC Monitors 4.75 to 25 DMS1067 PACKAGE REFERENCE Part number DMS1067S DMS1067P Package SOIC8 PDIP8 Temperature –40°C to +125°C –40°C to +125°C REV:A2FYJ 2011-01-01 DMS Microelectronic Limited 1 TM D1067 Supply Voltage (VIN)..................................... 27V Switch Voltage (VSW)................ –1V to VIN + 1V Bootstrap Voltage (VBS) ...Vsw-0.3V to VSW + 6V Enable/UVLO Voltage (VEN)...........–0.3V to +6V Comp Voltage (VCOMP) ...................–0.3V to +6V Feedback...