The LED driver "LDS8860" has already been sampled. This is a charge pump-based component with a patented PowerLite current regulator that achieves 91% efficiency, extending battery life. Primarily for backlighting applications in portable products, it supports up to 6 LEDs with up to 32mA per circuit.
The LDS8860 is a programmable 6-circuit 1x/1.5x/2x staged charge pump with current capability. Adding an ultra low dropout PowerLite current regulator increases the performance of the LDS8860 to 91%. In the operation of the charge pump, it is only necessary to use an external small ceramic capacitor to stabilize the switching frequency at 1MHz, so as to maintain the performance of low noise and input chopping.
According to Leadis Technology, mobile phone designers are inclined to add multimedia features that support rich content to new models, and the display screens tend to be larger. Therefore, the number of LED backlights required will be more and more, generally 4~ Six. This trend also requires more efficient LED drivers on the market to reduce power consumption.
The LED circuit can be configured in 3 separate groups, each group containing 2 circuits. Using the I2C series interface, each group can be independently adjusted to a current level of 0.5mA, and the current can be adjusted from 0A to 32mA. The design allows each group of circuits to operate independently, stopping only one group, while the other groups operate as usual. The components are packaged in a 16-pin TQFN package (4mm × 4mm or 3mm × 3mm) up to 0.8mm.
The Leadis ultra low voltage regulated PowerLite current regulator consumes a conversion voltage drop of only 50mV. In addition, this patent-pending technology addresses the biggest problem with charge pump LED drivers—the conversion of high-performance states (1-time mode) to lower performance states. By reducing the voltage difference of the driver to 50mV, the battery life can be extended by up to 10%.
The LDS8860 is a programmable 6-circuit 1x/1.5x/2x staged charge pump with current capability. Adding an ultra low dropout PowerLite current regulator increases the performance of the LDS8860 to 91%. In the operation of the charge pump, it is only necessary to use an external small ceramic capacitor to stabilize the switching frequency at 1MHz, so as to maintain the performance of low noise and input chopping.
According to Leadis Technology, mobile phone designers are inclined to add multimedia features that support rich content to new models, and the display screens tend to be larger. Therefore, the number of LED backlights required will be more and more, generally 4~ Six. This trend also requires more efficient LED drivers on the market to reduce power consumption.
The LED circuit can be configured in 3 separate groups, each group containing 2 circuits. Using the I2C series interface, each group can be independently adjusted to a current level of 0.5mA, and the current can be adjusted from 0A to 32mA. The design allows each group of circuits to operate independently, stopping only one group, while the other groups operate as usual. The components are packaged in a 16-pin TQFN package (4mm × 4mm or 3mm × 3mm) up to 0.8mm.
The Leadis ultra low voltage regulated PowerLite current regulator consumes a conversion voltage drop of only 50mV. In addition, this patent-pending technology addresses the biggest problem with charge pump LED drivers—the conversion of high-performance states (1-time mode) to lower performance states. By reducing the voltage difference of the driver to 50mV, the battery life can be extended by up to 10%.
Dongguan Andu Electronic Co., Ltd. , https://www.idofuseholder.com