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PSR (DOE level 5)

FT838x, meet DoE Level 5 energy efficiency, high efficiency, low BOM cost, no need for opto-coupler and TL431 feedback, high CV/CC precision, abundant and complete protection function. The power range meets various chargers and adapters of 0~30W.

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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

Product Profile :

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.


Feature :

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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FT8783NDx PSR 10W Internal NPN ±3% ±5% SOP7 x*3% Cable Comp

Product Profile :

The FT8783NX controller device is optimized for high-performance, low power switching mode power supply applications. The FT8783NX 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 FT8783NX can achieve both highest average efficiency, fast dynamic load response and super low standby power. FT8783NX satisfy DoE Level 6 /CoC V5 Tier2 requirements with production margin.

Furthermore, FT8783NX features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. 

Feature :

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

Proprietary technology enabling high efficiency and fast dynamic response

Satisfies DoE Level 6 /CoC V5 Tier2 requirements from 5V/1A to 5V/2.4A applications

No audible noise over entire operating range

Optimization for capacitive loading 

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

CV Open-loop Protection

Excellent capacitive loading start-up performance


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

Product Profile :

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. 

Feature :

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

More details

datasheet

Part No. Version Update Supported Part Nos download
FT838xx 0.82 2018-06-04 FT838R、FT838NBx、FT838Dx
FT8783xx 0.82 2018-06-04 FT8783NDx

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