ACTIVE

STR3A475HDL

The STR3A475HDL is a power IC for switching power supplies, incorporating a MOSFET and a current mode PWM controller IC. The low standby power is accomplished by the automatic switching between the PWM operation in normal operation and the burst-oscillation under light load conditions. The product achieves high cost-performance power supply systems with few external components.

Features

    ● Low Thermal Resistance Package
    ● Improving Circuit Efficiency
    ● Noise Reduction
    ● Current Mode Type PWM Control
    ● Soft Start Function
    ● Automatic Standby Function
       No Load Power Consumption <15 mW
    ● Operation Mode
       Normal Operation: PWM Mode
       Light Load Operation: Green-Mode
       Standby: Burst Oscillation Mode
    ● Random Switching Function
    ● Slope Compensation Function
    ● Leading Edge Blanking Function
    ● Bias Assist Function
    ● Protections
       Overcurrent Protection (OCP): Pulse-by-Pulse
       Overload Protection (OLP): Auto-restart
     Overvoltage Protection (OVP): Auto-restart
       Thermal Shutdown (TSD): Auto-restart with hysteresis

Application

    ● AC/DC Adapter
    ● White Goods
    ● Other SMPS

Specifications

Control Method PWM
Type Power IC
Output Current 36 W
RDS(ON) (max.) 1.700 Ω
VDSS (min.) 800 V
VCC (max.) 32 V
Oscillating Frequency(typ.) 100 kHz
OCP YES
OLP Auto Restart
OVP Auto Restart
Brown-in / out NO
TSD Auto Restart
Power Consumption at No Load <15mW
Package Weight (Typ.) 0.51 g

Typical Application

Typical Application

Block Diagram

Block Diagram

Pin Configuration Definitions

Pin Configuration Definitions

Physical Dimensions

Physical Dimensions

Questions or Comments?

Please feel free to contact us if you cannot find the desired product from the lineup.