High-performance LED driver chip LPD6803---Drive control solution to meet the needs of the lighting market

Introduction:

LPD6803 is a driver chip designed for LED lighting systems . It uses the latest advanced CMOS technology to provide constant current drive and grayscale modulation output, and is particularly suitable for discrete multi-grayscale full-color lighting systems.

characteristic:

Three-way output, constant current drive: each way has an external resistor to adjust the current: Iout(max)=30mA, Vout(max)=12V
Compatible with constant voltage mode, can directly replace conventional chips such as ZQL9712;
direct PWM output, no brightness loss, reduce data transmission volume, effectively reduce electromagnetic interference ( EMI )
Support 32-level grayscale/256-level grayscale (built-in anti-gamma correction logic) two modes, high scanning frequency (>4000HZ)
only requires a two-wire transmission structure of clock line/data line, and super cascading ability
Built-in oscillator, support FREE-RUN mode, reduce control circuit cost,
built-in LDO voltage regulator circuit, power supply Wide adaptability range (4.8-8V), high output withstand voltage (LED lamp power supply voltage can reach 12V)
Simplify peripheral matching, good scalability, can also be used as a PWM generator to control high-current device drive High-power LED lamp

Performance comparison with ZQL9712:

Note 1: Test conditions are data clock 2M, length 200 levels, 32 gray levels, LPD6803 scanning frequency has nothing to do with length;
2: Display For the same content, the data volume of LPD6803 is 1/5-1/3 of ZQL9712;
3: FREE-RUN function refers to the ability to maintain the original gray display after stopping the control signal input;
4: During the test, the cascade distance between LED lights is 15cm;
5: Under SOP16/TSSOP16 packaging, LPD6803 can directly replace ZQL9712 (constant voltage mode)