产品简介：

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.

产品特点 :

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

充电器方案：

典型方案	IC型号	封装	功率管	架构	平均效率	静态功耗	EMI	备注
5V1A	FT839NB1	SOP8	内置NPN	隔离PSR+肖特基	76.5%(6级)	<75mW(6级)	PASS	无Y电容
5V2A非	FT839ND1	SOP8	内置NPN	隔离PSR+肖特基	79.0%(5级)	<75mW(6级)	NO	非/小变压器EE13
5V2A	FT8783ND1+FT8370A	SOP7+SOP8	内置NPN	隔离PSR+同步整流	84.0%(6级)	<75mW(6级)	PASS
5V2A非	FT8393ND1	SOP7	内置NPN	隔离PSR+肖特基	81.0%(6级)	<75mW(6级)	NO	非/小变压器EE13
5V2.4A	FT8393ND1+FT8370B	SOP7+SOP8	内置NPN+内置MOS	隔离PSR+同步整流	85.6%(6级)	<75mW(6级)	PASS
5V2.4A非	FT8393ND1	SOP7	内置NPN	隔离PSR+肖特基	83.0%(6级)	<75mW(6级)	NO	非/小变压器EE15
5V3A	FT8393MD1+FT8370C	SOP8+SOP8	内置MOS+内置MOS	隔离PSR+同步整流	85.0%(6级)	<75mW(6级)	PASS
5V3.1A	FT8393M+FT8370C	SOT23-5+SOP8	外推MOS+内置MOS	隔离PSR+同步整流	86.0%(6级)	<75mW(6级)	PASS
5V3.4A	FT8393MDD1+FT8370C	DIP7+SOP8	内置MOS+内置MOS	隔离PSR+同步整流	85.6%(6级)	<75mW(6级)	PASS

5V2A非特色概述：

变压器为普通EE13，非三明治普通绕法，仅3个绕组，可自动绕法，成本低；

超小外壳，输出采用5A40肖特基，电路外围简单，成本低；

115/230Vac可满足5V2A，100Vac可满足5V1.5A;

Efficiency ≥ 77%@230Vac，满足五级能效

待机功耗<75mW@230Vac，满足五级能效

恒压：± 3%，恒流：± 3%

内置输出线损补偿(FT839ND1: 线补3%)，调试简单方便

具有输出短路保护、欠压锁定、过压保护功能

内置功率开关管，SOP-8封装，外围元件数量少，成本低

效率、过流点 (室温，板端)

V-I 曲线

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联系人：郑萍

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