SeriesWhite-LEDDriver

LP3220-LED Driver
2.5-5.5Input Voltage(V):
BoostFunctions:
3S10PDrive LED No(pcs):
1500Switchched Current(mA):
1MSwitchched Frequency (Hz):
250Feedback Vo(mV):
BacklightAPP:
OVP,SS,OTP,Constant Current,Low SizeSpecial Features:
SOT23-6/TDFN-6Package:


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.
 


Applications
 

 WLED Backlight driver
 OLED Backlight driver
 PDA
 MID/PTV

 


Features
 

 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)
Package
 

Marking Information
 

Please see specification. 
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We will send a copy to you as fast as we can.
 


 

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