PREVIEW

STR3A255

Package Image

Package:DIP8

The STR3A200 series are power ICs for switching power supplies, incorporating a MOSFET and a current-mode PWM controller IC.
The products achieve low power consumption and low standby power by including a startup circuit and a standby function that automatically switch operation modes – PWM mode in normal operation and burst-oscillation mode under light-load conditions.
Well-equipped with protection functions, the products also enable power supply systems to be more cost-effective with only a few external components.

Features

    ・Low Thermal Resistance Package
    ・Current Mode Type PWM Control
    ・Soft Start Function
    ・Auto Standby Function
     No Load Power Consumption < 15mW
    ・Operation Mode
     Normal Operation: PWM 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): Latched shutdown
     Thermal Shutdown (TSD): Latched shutdown

Application

    ・AC/DC adapter
    ・White goods
    ・Other SMPS

Specifications

Control Method PWM
Type Power IC
Output Current 44 W
RDS(ON) (max.) 1.1 Ω
VDSS (min.) 650.00 V
VCC (max.) 32.00 V
Oscillating Frequency(typ.) 67
OCP YES
OLP Auto Restart
OVP Latch
Brown-in / out NO
TSD Latch
Power Consumption at No Load <15mW

Typical Application

Typical Application

Block Diagram

Block Diagram

Pin Configuration Definitions

Pin Configuration Definitions

Questions or Comments?

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