LP3220-LED Driver

产品型号 输入电压(V) 功能 驱动个数(pcs) 开关电流(mA) 开关频率(Hz) 反馈电压(mV) 应用 特征 封装 规格书
LP3220 2.5-5.5 Boost 3S10P 1500 1M 250 Backlight OVP,SS,OTP,Constant Current,Low Size SOT23-6/TDFN-6

High Performance, Constant Current Switching Regulator For 11PCS White LED In Series

General Description

The LP3320 is a 1.0MHz PWM boost switching regulator designed for constant-current white LED driver applications. The LP3320 can drive a string of up to 11 white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors. The LP3320 implements a constant frequency 1.0MHz 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 250mV, 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.


 WLED Backlight driver
 OLED Backlight driver



 Up to 94% efficiency
 Shut-down current:<1uA
 Output voltage Up to 37V
 Internal Compensation, Soft-start
 Support down to 1% Dimming Duty Cycle
 1.0MHz fixed frequency switching
 High switch on current:1.5A
 Available in SOT23-6&TDFN-6(2mm×2mm)

Marking Information

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