Leadies released six LED LDS8860 drive circuit, using a standard I2C interface

Leadis Technology Co. Ltd. (Leadis Technology, Inc.) announced that the sample has to supply LDS8860 products. LDS8860 is a new series of six circuit LED drivers, by using the company's patented PowerLite current regulator, which is based on the charging pump products can achieve up to 91% efficiency, and extend battery life.

The latest LED driver for portable products backlight applications, support up to 6 LED, and the maximum power supply per circuit up to 32 ma. The introduction of the new industry standard I2C interface series of products will be added to the earlier announced the launch of the 6 circuit PWM and the first line programming interface products for mobile phone design engineers to provide more flexible new performance / interface selection.

Leadies LED Driver Senior Director Adolfo Garcia said: "the multimedia function around the mobile phone designers will be able to support the tendency of rich content with new models, so that the display screen tends to be larger in size, and thus the number of LED backlight will need more and more universal, from 6 to 4. This trend has also led to the need for more efficient LED drives on the market to reduce power consumption. Whether mobile phone designers prefer to use PWM, a programming interface or a new I2C interface, Ridis can provide the best six circuit product support. Meredith and will continue to focus on improving the core of portable device requirements: longer battery life. "

The conversion of ultra low voltage regulator PowerLite current regulator leadies internal consumption voltage drop is only 50 MV, can maintain the highest efficiency for longer periods of time. In addition, this patent pending technology can solve the biggest problem of the LED driver of the charge pump - that is, the state of high efficiency (1 times mode) to the lower efficiency of the conversion. The battery life can be extended to 10% by reducing the voltage differential of the drive to a minimum of 50 mv.

LDS8860 profile

LDS8860 is a current programmable 6LED circuit high efficiency 1x/1.5x/2x class charge pump. Add ultra low dropout PowerLite current regulator, can improve the efficiency of LDS8860 to 91%. In the operation of charging pump just to use small external ceramic capacitors will switch stable frequency at 1 MHz, the performance can maintain low noise and input ripple.

The LED circuit can be configured into 3 separate groups, each containing 2 circuit. The use of I2C series interface, each group can be adjusted independently of the current level of 0.5 mA, current can be increased from 0 to 32 ma. The design allows each circuit to operate independently, and only one group can be stopped while the other groups operate as usual. The device uses a 16 pin TQFN package (4 mm x 4 mm or 3 mm x 3 mm) with a maximum height of only 0.8 mm.

Source: power system