sip-10 str-l400 series power ic for quasi-resonant type switching power su pply with high efficiency, low noise low-height, and enough creepage isolation (>6mm) between high and low voltage terminals general descriptions the str-l400 series products are power ics for quas i-resonant switching type power supplies, incorporating a power mosfet and a contro ller ic in the sip-10 package. the product achieves high efficiency and low noise power supply systems by the quasi-resonant operation. the product is recommende d for the systems requiring low-height and enough clearance and creepage isolation between high and low voltage terminals. features quasi-resonant operation current-mode control built-in oscillator for low frequency operation the operation with low frequency of 50 s off time (around 22 khz), until the quasi-resonan t signal becomes valid, reduces the stress on components at startup and load-shorted. sip-10 package (sanken designation: sta-10l), recom mended for auxiliary power supplies of white goods. straight lead pitch: 2.54mm, height over pcb: < 12m m clearance and creepage isolation on pcb between hig h and low voltage terminals: 6.5mm (4 pins removed) input compensation at overcurrent the function reduces the distortion of overcurrent operation point to ac input voltage change by addin g three components. built-in avalanche energy guaranteed high-voltage p ower mosfet various protections overcurrent protection (ocp)---------------------- ------------ pulse-by-pulse overload protection (olp) ------------------------- ------------ latch shutdown thermal shutdown protection (tsd) ----------------- -------- latch shutdown applications switching power supplies for standby power supplies, home appliances (white good s), digital consumer equipment, oa equipment, industry machines, communication devices, others product lineup product no mosfet v dss min(v) r ds(on) max ( ) STR-L451 650 3.95 str-l472 900 7.7
sanken electric co.,ltd. warning the contents in this document are subject to change s, for improvement and other purposes, without noti ce. make sure that this is the latest version of the do cument before use. the operation and circuit examples in this document are provided for reference purposes only. sanken a ssumes no liability for violation of industrial pro perty, intellectual property, or other rights of sanken or third parties, that stem from these examp les. the user must take responsibility for considering a nd determining which objects the products in this d ocument are used with. although sanken will continue to improve the qualit y and reliability of its products, semiconductor products, by their nature, have certa in fault and failure rates. the user must take resp onsibility for designing and checking to secure the device and system so that a part failure may not l ead to human injury, fire, damages, or other losses. the contents in this document must not be transcrib ed or copied without sankens written consent. typical application circuit package information sip-10 sanken designation : sta-10l dimensions between roots dimensions between roots c cc co oo on nn nt tt t 8 88 8 1 11 1 7 77 7 1 11 10 00 0 2 22 2 3 33 3 4 44 4 9 99 9 6 66 6 d dd d v vv vc cc cc cc c / // /f ff fb bb b o oo oc cc cp pp p g gg gn nn nd dd d g gg gn nn nd dd d s ss s s ss st tt tr rr r- -- -l ll l4 44 40 00 00 00 0 v vv v o oo ou uu ut tt t g gg gn nn nd dd d v vv va aa ac cc c
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