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原邊(5 級能效)

FT838x,滿足5級能效、效率高、外圍成本低、無需光耦和TL431反饋、恒壓恒流精度高、具有豐富齊全的保護功能,功率範圍滿足0~30W 的各類充電器和適配器。

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Part No. Topology Max V/Pout 90V-265V Power Device CC CV Package Feature
FT838NBx PSR 5W Internal NPN ±3% ±5% SOP8 x*3% Cable Comp

産品簡介 :

The FT838NB/FT838RNA controller device is optimized for high-performance, low power switching mode power supply applications. The  FT838NB/FT838RNA facilitates CC/CV charger design by eliminating an opto-coupler and TL431. Its highly integrated functions such as Under Voltage Lockout (UVLO), Leading Edge Blanking (LEB) and built-in cable compensation offer the users a high efficiency and low cost solution for AC/DC power applications.

Power supplies built with FT838NB can achieve both highest average efficiency and fast dynamic load response. FT838RNA is optimized for LED driver applications with slightly higher (~22uA) standby current.

Furthermore, FT838NB/FT838RNA features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. FT838NB/FT838RNA is available in SOP8 package.


産品特點 :

Constant-Current (CC) and Constant-Voltage (CV) with Primary Side Control

Proprietary technology enabling high efficiency and fast dynamic response

No audible noise over entire operating range

Built-in power NPN 

Built-in Cable Compensation

Built-in Line Compensation

Primary-side feedback eliminates opto-coupler and TL431

Cycle-by-Cycle Current Limiting

Over Temperature Protection

VCC Over Voltage Protection

Open Circuit Protection

查看詳情
FT838Dx PSR 30W External NPN/MOS ±3% ±5% SOT23-5 x*3% Cable Comp

産品簡介 :

The FT838D/FT838R controller device is optimized for high-performance, low power switching mode power supply applications. The FT838D/FT838R facilitates CC/CV charger design by eliminating an opto-coupler and TL431. Its highly integrated functions such as Under Voltage Lockout (UVLO), Leading Edge Blanking (LEB) and built-in cable compensation offer the users a high efficiency and low cost solution for AC/DC power applications.

Power supplies built with FT838D can achieve both highest average efficiency and fast dynamic load response. FT838R is optimized for LED driver applications with slightly higher (~22uA) standby current.

Furthermore, FT838D/FT838R features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. FT838D/FT838R is avilabel in SOT23-5 package. 

産品特點 :

Constant-Current (CC) and Constant-Voltage (CV) with Primary Side Control

Proprietary technology enabling high efficiency and fast dynamic response

No audible noise over entire operating range

Applications from 1W to more than 18W output

Direct drive of BJT or MOS switch 

Built-in Cable Compensation

Built-in Line Compensation

Primary-side feedback eliminates opto-coupler and TL431

Cycle-by-Cycle Current Limiting

Over Temperature Protection

VCC Over Voltage Protection

Open Circuit Protection

查看詳情

規格書

Part No. 版本 添加時間 支持型號 附件
FT838xx 0.82 2018-05-24 FT838R、FT838NBx、FT838Dx ft838xx_ds_rev0.82_en_官網簡版.pdf

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