描述 Description

本產(chǎn)品是面向工業(yè)設(shè)備市場的產(chǎn)品，保證可長期穩(wěn)定供貨。是適合這些用途的產(chǎn)品。準(zhǔn)諧振控制器型DC/DC轉(zhuǎn)換器BD7685FJ-LB為所有存在插口的產(chǎn)品提供優(yōu)良的系統(tǒng)。為準(zhǔn)諧振動作，實(shí)現(xiàn)了軟開關(guān)，有助于實(shí)現(xiàn)低EMI。通過外接開關(guān)MOSFET及電流檢測電阻，可實(shí)現(xiàn)高自由度的電源設(shè)計。內(nèi)置欠壓功能，可監(jiān)控輸入電壓，有助于實(shí)現(xiàn)優(yōu)良系統(tǒng)。內(nèi)置脈沖串模式，可降低輕負(fù)載時的功耗。BD7685FJ-LB內(nèi)置了軟啟動功能、脈沖串功能、逐周期過電流限制、過電壓保護(hù)、過負(fù)荷保護(hù)、欠壓功能等各種保護(hù)功能。內(nèi)置了對SIC-MOSFET進(jìn)行優(yōu)良驅(qū)動的柵極箝位電路。

特性 Features

? Pin 8 : SOP-J8 Package (6.00mm × 4.90mm : 1.27mm pitch [TYP] )
? Quasi-resonant type (low EMI)
? Frequency reduction mode
? Low current consumption (19μA), during standby
? Low current consumption when no load (burst operation when light load)
? Maximum frequency (120kHz)
? CS Pin Leading-Edge Blanking
? VCC UVLO (Under Voltage Drop Out protection)
? VCC OVP (Over Voltage Protection)
? Per-cycle over-current protection circuit
? Soft start
? ZT trigger mask function
? Voltage protection function (brown out)
? ZT OVP (Over Voltage Protection)
? Gate-clamp circuit