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SFA0002

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Package:SOP8

The SFA0002 is the switching power supply IC for flyback circuit and has high accuracy error amplifier. When the load of the power supply circuit becomes light, the operation of IC becomes the burst oscillation mode in order to improve the circuit efficiency. By employing the primary-side regulation, the IC realizes low component counts and design-friendliness, leading to downsizing and standardization of the power supply circuit.

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Features

    ●AEC-Q100 Qualified
    ●Current Mode Type PWM Control
       (Switching frequency can be adjusted by external
        capacitor)
    ●Reducing External Component Count by Primary-side
       Regulation
    ●Built-in High Accuracy Error Amplifier
        (VFB = 2.5 V ± 2%, −40°C to 125°C)
    ●Operation Mode
       Normal Operation: PWM Mode
       Light Load Operation: Burst Oscillation
    ●Soft Start Function
       (Startup time can be adjusted by external capacitor)
    ●Drive Output Stop Function
    ●Protections:
       Overcurrent Protection (OCP): Pulse-by-Pulse
       Overload Protection (OLP): Auto-restart
       Thermal Shutdown Protection (TSD) with Hysteresis:
        Auto-restart

Application

    For following Isolation auxiliary power supply:
    ●Inverter
    ●On-board Charger (OBC)
    ●Battery Management System (BMS)

Specifications

Block Diagram sfa0002_fbd_en.png
Control Method PWM
Type
Output Current 5 W
RDS(ON) (max.)
VDSS (min.) V
VCC (max.) 36 V
Oscillating Frequency 20 to 200 kHz
OCP YES
OLP Auto Restart
OVP None
TSD Auto Restart

Remarks

Control IC (External MOS)

Block Diagram

Block Diagram

Pin Configuration Definitions

Pin Configuration Definitions

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