{"product_id":"ltc4357hms8-diode-controller-power-system","title":"LTC4357HMS8 Ideal Diode Controller | MOSFET for Power Systems","description":"\u003ch2\u003eLTC4357HMS8 Ideal Diode Controller | High-Voltage Diode-OR for Redundant Power Systems\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eLTC4357HMS8\u003c\/strong\u003e is a high-voltage \u003cstrong\u003eideal diode controller\u003c\/strong\u003e from Analog Devices that replaces inefficient Schottky diodes in OR-ing, automotive, and telecom redundant-power systems. By driving an external N-channel MOSFET, the chip slashes \u003cstrong\u003epower loss, heat, and PCB space\u003c\/strong\u003e versus passive Schottky alternatives, while delivering \u003cstrong\u003e80V surge protection\u003c\/strong\u003e and \u003cstrong\u003e0.5µs fault response\u003c\/strong\u003e — exactly what mission-critical applications need to ride through faults without dropping load.\u003c\/p\u003e\n\u003cp\u003eThis is the part to reach for when a design needs near-zero forward drop across a redundant-power feed: dual-PSU OR-ing on a server rail, automotive load-dump protection at 24V\/48V, or industrial power redundancy where a Schottky's static loss is unacceptable. With ultra-low \u003cstrong\u003e500µA quiescent current\u003c\/strong\u003e and the \u003cstrong\u003ecompact 8-pin MSOP package\u003c\/strong\u003e (3.0mm wide), the LTC4357HMS8 fits cleanly into space- and power-constrained designs.\u003c\/p\u003e\n\u003ch3\u003eUltra-Fast 0.5µs Shutdown | Reverse Current Protection \u0026amp; Low 500µA Operation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e80V wide input range\u003c\/strong\u003e — perfect for 24V\/48V automotive load-dump and industrial power redundancy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNear-zero voltage drop\u003c\/strong\u003e — uses external N-MOSFETs to minimise losses versus traditional diodes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-oscillation control\u003c\/strong\u003e — ensures smooth current switching in dual-power OR-ing circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReverse current blocking\u003c\/strong\u003e — 0.5µs shutdown prevents backflow during short circuits or outages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive-grade temperature range\u003c\/strong\u003e (-40°C to +125°C) for harsh deployment environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere the LTC4357HMS8 Fits\u003c\/h3\u003e\n\u003cp\u003eIdeal for server farms, base stations, and EV systems, this ADI-sourced IC combines ultra-low quiescent current with robust MSOP-8 packaging for compact, reliable designs. The 9V to 80V input range covers the bulk of industrial and automotive bus voltages, and the fast fault-response time keeps redundant supplies healthy through short-duration disturbances. Pair with an external N-MOSFET sized for the rail current to complete the diode-OR cell.\u003c\/p\u003e\n\u003ch4\u003eLTC4357HMS8 Diode Controller Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e9V to 80V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuiescent Current\u003c\/td\u003e\n\u003ctd\u003e500µA (typ.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShutdown Response\u003c\/td\u003e\n\u003ctd\u003e0.5µs (max.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003e8-pin MSOP (3.00mm wide)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKey Protections\u003c\/td\u003e\n\u003ctd\u003eReverse Current, Overvoltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +125°C (Automotive)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eRelated products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ltc4367ims8-pbf-overvoltage-controller\"\u003eLTC4367IMS8#PBF Overvoltage Protection Controller\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/tps53647rtar-pmbus-buck-controller-ic-multi-phase-dc-converter\"\u003eTPS53647RTAR PMBus Buck Controller IC\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/nsi8100n-isolator-chip-bitmain-apw17-power-supply-unit\"\u003eNSi8100N Isolator Chip – APW17 PSU\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/aons32311-nchannel-mosfet-high-current-applications-cryptominer-repair\"\u003eAONS32311 N-Channel Power MOSFET\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNeed LTC4357HMS8 in tray quantities for production runs? Email \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e for bulk pricing and lead times. Worldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"Default Title","offer_id":44798249599155,"sku":null,"price":10.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/LTC4357HMS8-Ideal-Diode-Controller-9V-80V-500_A-MOSFET-Replacement-Power-Systems.webp?v=1751591320","url":"https:\/\/lys-sz.com\/products\/ltc4357hms8-diode-controller-power-system","provider":"LYS Shenzhen","version":"1.0","type":"link"}