Function : Power Supply Supervisor + Regulator + PWM
Package : DIP 20 Pin
Manufacturers : Fairchild
1. half-bridge (or 494) power supply monitoring IC + two 431+ PWM 2. High level of integration and few external components 3. 3.3V, 5V and 12V overvoltage protection 4. 3.3V, 5V and 12V voltage protection 5. -12V and / or -5V voltage protection 6. Over Power and Short-Circuit Protection 7. AC input voltage drops alarm circuit 8. PG circuit 9. PSON and PG signal delay time 10. Remote on / off function 11. containing the error amplifier and oscillator 12. Two 431 regulators for 3.3 and 5V voltage 13. Latch pulse width modulation (PWM), can cycle by cycle switch 14. push-pull pulse width modulation works and totem pole output driver 15. Soft start and maximum duty cycle of 93%
The Part Number is MA8920. The package is ZIP-7 pin type.
The function of this semiconductor is MA8920.
Manufacturers : ETC
The MA8000 series is a power supply IC module that contributes to energy saving during standby. This product incorporates a control circuit and a main switch element, and can configure a partial resonance RCC converter with a small number of external components.High efficiency, low noise standby low power consumption can be realized by the conventional power supply design method.
Features 1. Power consumption is very low at micro loads. (Load power 50mW, input voltage AC 100V, input power 0.5W or less.) 2. High efficiency over a wide range of loads.(Efficiency 80% or more at rated load.) 3. Feedback noise is very small.(Vcci-class B compliant.) 4. The oscillation operation is stable even with a minute load. 5. With soft start function. 6. The number of electrical parts is small and the circuit configuration is simple. 7. As IC modules can be selected according to the input / output specifications, design method can be unified and design time can be shortened. 8. Adoption of a full mold package is advantageous for insulation design. 9. All-round input design is also possible. […]
Other data sheets within the file : MA8910, MA8620, MA8630