APW7061

APW7061 Synchronous Buck PWM Controller Features Fast Transient Response - 0~85% Duty Ratio www.DataSheet4U.com Excellent General Description The APW7061 is a voltage mode, synchronous PWM cont roller which drives dual N-c hannel MOSFETs . It integrates t he c ont rols, monitoring and protec tion funct ions into a single package, which provides one c ontrolled power output s wit h under-voltage and over-current protections. APW7061 provides excellent regulation for output load variation. An internal 0.8V temperature-compensated reference voltage is designed to meet the various low output voltage applications. A power-on-reset (POR) circuit limits the VCC minimum opearting s upply voltage to ass ure the c ontroller working well. Over current protec tion is achieved by monit oring t he volt age drop ac ros s the low s ide MOSFET, eliminating the need for a current sensing resistor and short circuit condition is detected through the FB pin. The over-current protection triggers the soft -start function until the fault events be removed, but Under-voltage protection will shutdown IC directly. Pull the COMP pin below 0.4V will shutdown t he controller, and both gate drive signals will be low. Output Voltage Regulation - 0.8V Internal Reference - ±1% Over Line Voltage and Temperature Internal Soft-Start - Typical 2mS Over Current Protection - Sense Low-side MOSFET’s RDS(ON) Under Voltage Lockout Small Converter Size - 250kHz Free-running Oscillator 8-lead SOIC ...