B6285A,B6285B,B6285C,B6285D,B6285E,B6285F,B6285G,B6285H,B6285I,B6285J,B6285K,B6285L,B6285M,B6285N,B6285O,B6285P,B6285Q,B6285R,B6285S,B6285T,B6285U,B6285V,B6285W,B6285X,B6285Y,B6285Z固定頻率電流模式輸入電壓2V-24V輸出高達(dá)28V可調(diào),電流2A升壓IC
是一款固定頻率,電流模式升壓變換器,高達(dá)1.2MHz的工作頻率使得外圍電感電容可以選擇更小的規(guī)格。內(nèi)置軟啟動功能減小了啟動沖擊電流。輕載時自動切換至PFM模式。包含了輸入欠壓鎖定,電流限制以及過熱保護(hù)功能。小尺寸的封裝給PCB省下更多的空間。
● 集成0.8歐姆的高壓功率MOSFET
● 內(nèi)部4A的開關(guān)電流限制
● 2V-24V的輸入電壓,VFB:0.6V
● 1.2MHz 固定工作頻率
● 輸出電流2A
● 內(nèi)部補(bǔ)償功能
● 輸出電壓高達(dá)28V
● 輕負(fù)載條件下,能進(jìn)行自動脈沖調(diào)制。
● 效率高達(dá)97%
應(yīng)用: 電池供電設(shè)備/ 機(jī)頂盒/ LCD偏置電源/ 無線產(chǎn)品及DSL調(diào)制調(diào)解器/ PCI網(wǎng)卡或插槽供電 DC-DC / AC-DC 電壓檢測 降壓 DC-DC 同步降壓 ESD電壓保護(hù)
GENERAL DESCRIPTION:
The is a constant frequency, 6-pin SOT23 current mode step-up converter intended for small,low power applications. The switches at 1.2MHz and allows the use of tiny, low cost capacitors and inductors 2mm or less in height.Internal soft-start results in small inrush current and extends battery life.
The features automatic shifting to pulse frequency modulation mode at light loads. The
includes under-voltage lockout, currentlimiting, and thermal overload protection to prevent damage in the event of an output overload. The is available in a small 6-pin SOT-23 package.
FEATURES:
? Integrated 80mΩ Power MOSFET
? 2V to 24V Input Voltage
? 1.2MHz Fixed Switching Frequency
? Internal 4A Switch Current Limit
? Adjustable Output Voltage
? Internal Compensation
? Up to 28V Output Voltage
? Automatic Pulse Frequency Modulation
Mode at Light Loads
? up to 97% Efficiency
? Available in a 6-Pin SOT23-6 Package
APPLICATIONS:
? Battery-Powered Equipment
? Set-Top Boxed
? LCD Bais Supply
? DSL and Cable Modems and Routers
? Networking cards powered from PCI
or PCI express slots