(Hong Kong)
Product Summary
The A6351 is a hybrid IC. It consists from power MOSFET and a controller IC. The A6351 is designed for PRC fly-back converter type SMPS (Switching Mode Power Supply) applications, applicable for PRC operation for small power SMPS. This IC realizes downsizing and standardizing of a power supply system reducing external components count and simplifying the circuit designs. (Note). PRC is abbreviation of Pulse Ratio Control (On-width control with fixed OFF-time).
Parametrics
A6351 absolute maximum ratings: (1)IDpeak, Drain Current: 2.36 A; (2)IDMAX, maximum switching current: 2.36A; (3)EAS, single pulse avalanche energy: 56mJ; (4)Vin, input voltage for control part: 35V; (5)Vth, O,C,P,F,B pin voltage: 6V; (6)PD1, power dissipation for MOSFET: 1.35W; (7)PD2 power dissipation for control part: 0.14W; (8)TF: internal frame temperature in operation: -20 to 125℃; (9)Top, operating ambient temperature: -20 to 125℃; (10)Tstg, storage temperature: -40 to 125℃; (11)Tch, channel temperature: 150℃.
Features
A6351 features: (1)Oscillator is provided on the monolithic control IC with adopting On-Chip-Trimming technology.; (2)Small temperature characteristics variation by adopting a comparator to compensate for temperature on the control part.; (3)Low start-up circuit current (50uA max); (4)Built-in Active Low-Pass Filter for stabilizing the operation in case of light load; (5)Avalanche energy guaranteed MOSFET with high VDSS; (6)The built-in power MOSFET simplifies the surge absorption circuit since the MOSFET guarantees the avalanche energy.; (7)No VDSS de-rating is required.; (8)Built-in constant voltage drive circuit; (9)Various kinds of protection functions; (10)Pulse-by-pulse Overcurrent Protection (OCP); (11)Overvoltage Protection with latch mode (OVP); (12)Thermal Shutdown with latch mode (TSD).
Diagrams
