LP3320 Datasheet | Lowpowersemi

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 ponent sizes. To improve efficiency, the feedback voltage is set to 250m V, which reduces the power dissipation in the current setting resistor. Highly integration and internal pensation network minimizes as 5 external ponent counts. Optimized operation frequency can meet the requirement of small LC filters value and low operation current with high efficiency. Order Information LP3320 F: Pb-Free Package Type B6: SOT23-6 QV:TDFN-6 Applications - WLED Backlight driver - OLED Backlight driver - PDA - MID/PTV Features - Up to 94% efficiency - Shut-down current:<1u A - Output voltage Up to 37V - Internal pensation, 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 Typical Application Circuit C1 10u F 4.7u H 1 LX 6 VIN NC 5 C2 2.2u F LED+ 4 EN FB 3 GND 2 LED- R1 12Ω Marking Information Device Marking Package Shipping LP3320B6F LPS SOT23-6...