OB3399高精度离线主面PWM控制器
一般的描述
OB3399主面监管离线了
照明控制器,可以实现精确的领导
电流。它极大地简化了LED照明
系统设计通过消除二次侧
反馈电路。专有的恒压
(CV)和恒流控制(CC)
综合如下图所示。
LED电流可以调整(CC控制)
外部电阻Rs在CS销。
OB3399提供全面的保护
和自动恢复功能,包括覆盖
逐周期限流,VDD夹和
UVLO。优秀的EMI性能
在鲜专用频率洗牌
技术。
OB3399提供SOT23-6包。
图1。典型的CC / CV曲线
特性
High Precise Constant Current Regulation
通用交流输入
Primary-side Sensing 和 Regulation Without
TL431和Opto-coupler
Adjustable Constant Current Outpu
OB3399高精度离线主面PWM控制器
一般的描述
OB3399主面监管离线了
照明控制器,可以实现精确的领导
电流。它极大地简化了LED照明
系统设计通过消除二次侧
反馈电路。专有的恒压
(CV)和恒流控制(CC)
综合如下图所示。
LED电流可以调整(CC控制)
外部电阻Rs在CS销。
OB3399提供全面的保护
和自动恢复功能,包括覆盖
逐周期限流,VDD夹和
UVLO。优秀的EMI性能
在鲜专用频率洗牌
技术。
OB3399提供SOT23-6包。
图1。典型的CC / CV曲线
特性
High Precise Constant Current Regulation
通用交流输入
Primary-side Sensing 和 Regulation Without
TL431和Opto-coupler
Adjustable Constant Current Outpu
深圳市芯美力科技有限公司
OB3399 High Precision Offline Primary-Side PWM Controller
GENERAL DESCRIPTION
OB3399 is a primary side regulation off-line LED
lighting controller which can achieve accurate LED
current. It significantly simplifies LED lighting
system design by eliminating the secondary side
feedback circuitry. Proprietary Constant Voltage
(CV) and Constant Current (CC) control is
integrated as shown in the figure below.
The LED current (CC control) can be adjusted
externally by the resistor Rs at CS pin.
OB3399 offers comprehensive protection
coverage with auto-recovery features including
Cycle-by-Cycle current limiting, VDD clamp and
UVLO. Excellent EMI performance is achieved
with On-Bright proprietary frequency shuffling
technique.
OB3399 is offered in SOT23-6 package.
Fig.1. Typical CC/CV Curve
FEATURES
High Precise Constant Current Regulation at
Universal AC input
Primary-side Sensing and Regulation Without
TL431 and Opto-coupler
Adjustable Constant Current and Output
Power Setting
Adjustable Constant Voltage Load
Compensation
Built-in Primary Winding Inductance
Compensation
Built-in Leading Edge Blanking (LEB)
Cycle-by-Cycle Current Limiting
VDD Under Voltage Lockout with Hysteresis
(UVLO)
Latched over temperature protection (OTP)
VDD Clamp
APPLICATIONS
Low Power AC/DC offline SMPS for
LED applications
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