STR-L400 series is a power IC for switching power supply, incorporating a power MOSFET and a current mode quasi-resonant controller IC in one package.
Supports quasi-resonant and PRC* at normal operation。
A Low height, SIP-10L full mold package with at least 6.5mm of creepage isolation between high and low terminal tips.
Rich set of protection features help realize low component count, and high performance-to-cost power supply.
* PRC(Pulse Ratio Control)・・・Control method with fixed OFF time, ON time control (Sanken Electric CO., LTD. designation)


    ・SIP10L full mold package
     (STA10L package、2.54mm straight lead pitch)
    ・Current-mode control
    ・Built-in oscillator for low frequency operation
    ・Quasi-resonant operation
    ・Input compensation at overcurrent
    ・Built-in Avalanche energy guaranteed
    ・Various protections:
     Over current protection (OCP): pulse by pulse
     Over voltage protection (OVP): latch shutdown
     Thermal shutdown protection (TSD): latch shutdown


    ・White goods
    ・Office automation (OA) equipment
    ・Digital appliances
    ・Industrial equipment
    ・Telecommunication equipment
    ・Other S.M.P.S


Control Method Quasi-Resonant
Type Power IC
Output Current 35 W
RDS(ON) (max.) 7.7 Ω
VDSS (min.) 900.00 V
VCC (max.) 35.00 V
Oscillating Frequency(typ.)
OLP None
OVP Latch
Brown-in / out NO
TSD Latch
Power Consumption at No Load

Typical Application

Typical Application

Block Diagram

Block Diagram

Questions or Comments?

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