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PSR (DOE level 6)

FT839x/8393x, meet DoE Level 6/Coc V5 Tier2 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
FT839NAx PSR 5W Internal NPN ±3% ±5% SOP8 x*3% Cable Comp

Product Profile :

The FT839NX/FT839MX controller device is optimized for high-performance, low power switching mode power supply applications. The FT839NX/FT839MX 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 FT839NX/FT839MX can achieve both highest average efficiency, fast dynamic load response and super low standby power. FT839NX and FT839MX satisfy DoE Level 6 requirements with production margin from 5V/1A to 5V/2.4A applications, respectively.

Furthermore, FT839NX/FT839MX features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. FT839NX is available in SOP8/DIP8 package. FT839MX 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

Satisfy DoE Level 6 requirements from 5V/1A to 5V/2.4A applications

No audible noise over entire operating range

Optimization for capacitive loading 

Built-in power NPN/MOS 

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


More details
FT839NBx PSR 6W Internal NPN ±3% ±5% SOP8 x*3% Cable Comp

Product Profile :

The FT839NX/FT839MX controller device is optimized for high-performance, low power switching mode power supply applications. The FT839NX/FT839MX 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 FT839NX/FT839MX can achieve both highest average efficiency, fast dynamic load response and super low standby power. FT839NX and FT839MX satisfy DoE Level 6 requirements with production margin from 5V/1A to 5V/2.4A applications, respectively.

Furthermore, FT839NX/FT839MX features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. FT839NX is available in SOP8/DIP8 package. FT839MX 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

Satisfy DoE Level 6 requirements from 5V/1A to 5V/2.4A applications

No audible noise over entire operating range

Optimization for capacitive loading 

Built-in power NPN/MOS 

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

More details
FT839NDx PSR 10W Internal NPN ±3% ±5% SOP8 x*3% Cable Comp

Product Profile :

The FT839NX/FT839MX controller device is optimized for high-performance, low power switching mode power supply applications. The FT839NX/FT839MX 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 FT839NX/FT839MX can achieve both highest average efficiency, fast dynamic load response and super low standby power. FT839NX and FT839MX satisfy DoE Level 6 requirements with production margin from 5V/1A to 5V/2.4A applications, respectively.

Furthermore, FT839NX/FT839MX features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. FT839NX is available in SOP8/DIP8 package. FT839MX 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

Satisfy DoE Level 6 requirements from 5V/1A to 5V/2.4A applications

No audible noise over entire operating range

Optimization for capacitive loading 

Built-in power NPN/MOS 

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

More details
FT839NDDx PSR 12W Internal NPN ±3% ±5% DIP8 x*3% Cable Comp

Product Profile :

The FT839NX/FT839MX controller device is optimized for high-performance, low power switching mode power supply applications. The FT839NX/FT839MX 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 FT839NX/FT839MX can achieve both highest average efficiency, fast dynamic load response and super low standby power. FT839NX and FT839MX satisfy DoE Level 6 requirements with production margin from 5V/1A to 5V/2.4A applications, respectively.

Furthermore, FT839NX/FT839MX features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. FT839NX is available in SOP8/DIP8 package. FT839MX 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

Satisfy DoE Level 6 requirements from 5V/1A to 5V/2.4A applications

No audible noise over entire operating range

Optimization for capacitive loading 

Built-in power NPN/MOS 

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


More details
FT8391NDDx PSR 12W Internal NPN ±3% ±5% DIP8 x*3% Cable Comp

Product Profile :

The FT8391NDDX controller device is optimized for high-performance, low power switching mode power supply applications. The FT8391NDDX 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 FT8391NDDX can achieve both highest average efficiency, fast dynamic load response and super low standby power. FT8391NDDX satisfy DoE Level 6 requirements with production margin from 5V/1A to 5V/2.4A /12V1A applications, respectively.

Furthermore, FT8391NDDX features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. FT8391NDDX is available in DIP8 package. 

Feature :

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

Proprietary technology enabling high efficiency and fast dynamic response

Satisfy DoE Level 6 requirements from 5V/1A to 5V/2.4A /12V1A applications

No audible noise over entire operating range

Optimization for capacitive loading 

Built-in power NPN/MOS 

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

DIP8 package

More details
FT839Dx PSR 30W External NPN/MOS ±3% ±5% SOT23-5 x*3% Cable Comp

Product Profile :

The FT839Dx controller device is optimized for high-performance, low power switching mode power supply applications. The FT839Dx 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 FT839Dx can achieve both highest average efficiency and fast dynamic load response. 

Furthermore, FT839Dx features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. FT839Dx is available 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
FT8393NDx PSR 12W Internal NPN ±3% ±5% SOP7 x*3% Cable Comp

Product Profile :

The FT8393NDx is a Flyback controller targeting at high-performance Constant Current/Constant Voltage applications. The FT8393NDx facilitates CC/CV charger design by eliminating an opto-coupler and TL431. FT8393NDx operates in quasi-resonant mode and adaptive PFM control for highest average efficiency for AC/DC power applications.  

Power supplies built with FT8393NDx can achieve both highest average efficiency, fast dynamic load response and super low standby power. FT8393NDx satisfy DoE VI and CoC Tier2 requirements with production margin for 5V/2A and 5V/2.4A applications, respectively. 

Furthermore, FT8393NDx features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. 

When FT8393NDx is used with FT8370x, good under-shoot performance and higher conversion efficiency can be achieved

Feature :

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

Proprietary technology enabling high efficiency and fast dynamic response

Satisfy DoE VI & CoC Tier2 requirements 

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

Excellent capacitive loading start-up performance

FT8370x Awaking Signal Detection

More details
FT8393MBx PSR 12W Internal MOS ±3% ±5% SOP7 x*3% Cable Comp

Product Profile :

The FT8393Mxx is a Flyback controller targeting at high-performance Constant Current/Constant Voltage applications. The FT8393Mxx facilitates CC/CV charger design by eliminating an opto-coupler and TL431. FT8393Mxx operates in quasi-resonant mode and adaptive PFM control for highest average efficiency for AC/DC power applications.  

Power supplies built with FT8393Mxx can achieve both highest average efficiency, fast dynamic load response and super low standby power. FT8393Mxx satisfy DoE VI and  CoC Tier2 requirements with production margin. 

Furthermore, FT8393Mxx features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. 

When FT8393Mxx is used with FT8370x, good under-shoot performance and higher conversion efficiency can be achieved

Feature :

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

Proprietary technology enabling high efficiency and fast dynamic response

Satisfy DoE VI & CoC Tier2  requirements 

No audible noise over entire operating range

Optimization for capacitive loading 

Built-in power MOS 

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

Excellent capacitive loading start-up performance

FT8370 Awaking Signal Detection


More details
FT8393MDx PSR 15W Internal MOS ±3% ±5% SOP8 x*3% Cable Comp

Product Profile :

The FT8393Mxx is a Flyback controller targeting at high-performance Constant Current/Constant Voltage applications. The FT8393Mxx facilitates CC/CV charger design by eliminating an opto-coupler and TL431. FT8393Mxx operates in quasi-resonant mode and adaptive PFM control for highest average efficiency for AC/DC power applications.  

Power supplies built with FT8393Mxx can achieve both highest average efficiency, fast dynamic load response and super low standby power. FT8393Mxx satisfy DoE VI and  CoC Tier2 requirements with production margin. 

Furthermore, FT8393Mxx features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. 

When FT8393Mxx is used with FT8370x, good under-shoot performance and higher conversion efficiency can be achieved

Feature :

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

Proprietary technology enabling high efficiency and fast dynamic response

Satisfy DoE VI & CoC Tier2  requirements 

No audible noise over entire operating range

Optimization for capacitive loading 

Built-in power MOS 

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

Excellent capacitive loading start-up performance

FT8370 Awaking Signal Detection

More details
FT8393MDDx PSR 17W Internal MOS ±3% ±5% DIP7 x*3% Cable Comp

Product Profile :

The FT8393Mxx is a Flyback controller targeting at high-performance Constant Current/Constant Voltage applications. The FT8393Mxx facilitates CC/CV charger design by eliminating an opto-coupler and TL431. FT8393Mxx operates in quasi-resonant mode and adaptive PFM control for highest average efficiency for AC/DC power applications.  

Power supplies built with FT8393Mxx can achieve both highest average efficiency, fast dynamic load response and super low standby power. FT8393Mxx satisfy DoE VI and  CoC Tier2 requirements with production margin. 

Furthermore, FT8393Mxx features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. 

When FT8393Mxx is used with FT8370x, good under-shoot performance and higher conversion efficiency can be achieved

Feature :

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

Proprietary technology enabling high efficiency and fast dynamic response

Satisfy DoE VI & CoC Tier2  requirements 

No audible noise over entire operating range

Optimization for capacitive loading 

Built-in power MOS 

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

Excellent capacitive loading start-up performance

FT8370 Awaking Signal Detection

More details
FT8393M PSR 30W External MOS ±3% ±5% SOT23-5 x*3% Cable Comp

Product Profile :

The FT8393Mxx is a Flyback controller targeting at high-performance Constant Current/Constant Voltage applications. The FT8393Mxx facilitates CC/CV charger design by eliminating an opto-coupler and TL431. FT8393Mxx operates in quasi-resonant mode and adaptive PFM control for highest average efficiency for AC/DC power applications.  

Power supplies built with FT8393Mxx can achieve both highest average efficiency, fast dynamic load response and super low standby power. FT8393Mxx satisfy DoE VI and  CoC Tier2 requirements with production margin. 

Furthermore, FT8393Mxx features fruitful protections like Open Circuit Protection and Over Temperature Protection to eliminate the external protection circuits and provide reliable operations. 

When FT8393Mxx is used with FT8370x, good under-shoot performance and higher conversion efficiency can be achieved

Feature :

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

Proprietary technology enabling high efficiency and fast dynamic response

Satisfy DoE VI & CoC Tier2  requirements 

No audible noise over entire operating range

Optimization for capacitive loading 

Built-in power MOS 

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

Excellent capacitive loading start-up performance

FT8370 Awaking Signal Detection


More details

datasheet

Part No. Version Update Supported Part Nos download
FT839x 0.90 2018-06-04 FT839NAx、FT839NBx、FT839NDx、FT839NDDx、FT839Dx
FT8391xx 0.90 2018-06-04 FT8391NDDx
FT8393NDx 0.80 2018-06-04 FT8393NDx
FT8393Mxx 0.81 2018-06-04 FT8393MBx、FT8393MDx、FT8393MDDx、FT8393M

Promotion

Part No. Version Update Supported Part Nos download
FT839/8393 promotion 2.0 2018-06-04 PSR (DOE level 6)

Writer

Part No. Version Update Supported Part Nos download

IDE

Part No. Version Update Supported Part Nos download

Application Note

Part No. Version Update Supported Part Nos download