【TP3989】_TP3989电路_TP3989封装_TP3989功能
TP3989
TP3989利盛达咨询电话:139 2843 4054

TP3989简介:可驱动3w大功率大电流led,也常用于驱动0.3W、1W 3串2并大电流大功率LED。 0.3W 1W 大电流大功率LED驱动IC
The TP3989 is a 600KHz PWM boost switching regulator designed for constant- current white LED driver applications. The TP39 89  can drive a string of up to 7 white LEDs from a 2.8V supply or 45 white LEDs from a 5V supply in series, ensuring uniform brightness and eliminating several ballast resistors. The TP39 89 implements a constant frequency 600KHz PWM control scheme. The high frequency PWM operation also saves board space by reducing external component sizes. To improve efficiency, the feedback voltage is set to 125mV, which reduces the power dissipation in the current setting resistor. 
Highly integration and internal compensation network minimizes as 5 external component counts. Optimized operation frequency can meet the requirement of small LC filters value and low operation current with high efficiency.


Features
■ High Efficiency:96%
■ Large Switch current: 3A
■ Low  DSON of Switch mosfet : 70m Ω
■ 500KHz Frequency PWM Operation
■ Maximum Output Voltage up to 24V
■ Programmable LED Driver Current : 10mA  ~  1.2A
■ Operating R ange :1V to 20V
■ Wide R ange Output Voltage:3.2V-24V
■ Shutdown Supply Current: <1uA
■ A vailable in SOT23-6 Package  
■ Minimize the External Component
■ R oHS Compliant and 100% Lead (PB ) -Free

Applications
■ WLED Black-light driver
■ MID/Portable DVD
■ Car Panel Backlight driver


用邮件咨询TP3989的相关信息 就TP3989咨询利盛达科技客服,也可电话至13928434054。
利盛达代理销售TP3989
新市场拓展部24小时全球服务热线:139 2843 4054
订单状态查询电话:0755-33654730
传真:0755-86250626
投诉电话:13928434054
邮箱:sales@lsdtek.com
网址:www.lsdtek.com
地址:深圳市福田区滨河大道上沙创新科技园5栋4楼 / 深圳市南山区南山大道南光大厦2栋1809

利盛达致力于提供完毕可靠的电源解决方案
公司产品线包含 LED背光驱动IC锂电池充电IC
升压转换器BOOST DC/DC降压转换器
LDO稳压器件等电源IC,主要应用于各种手持式消费
电子产品如PMP、GPS、MID、数码相机以及迷你音箱等。