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原边反馈(5级能效)

FT838x,满足5级能效、效率高、外围成本低、无需光耦和TL431反馈、恒压恒流精度高、具有丰富齐全的保护功能,功率范围满足0~30W 的各类充电器和适配器。

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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

产品简介 :

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.


产品特点 :

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

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

产品简介 :

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. 

产品特点 :

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

查看详情

规格书

Part No. 版本 添加时间 支持型号 附件
FT838xx 0.82 2018-05-24 FT838R、FT838NBx、FT838Dx

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