Leadies launched a new LED drive circuit six series of products

[BP] the Nikkei news agency reported in November 5, 2007, Leadis Technology Co. Ltd. (Leadis Technology, Inc.) (NASDAQ: LDIS) announced that can supply LDS8866, LDS8865 and LDS8864 make the product samples, based on charge pump LED drive in a new series of leadies products can reach 95% by using the current PowerLite patent regulator performance. Non memory memory on chip (NVM) allows the user to set the maximum current in each of the 3 sets of LED without the use of an external resistor. The adjustment of the LED current can be controlled by a PWM interface that is easy to use by a design engineer. This series of products for portable products backlight applications, support up to 6 LED, and the maximum power supply of each circuit up to 32 MA (mA). Ridis main development simulation and mixed signal semiconductor devices, the mobile phone support consumer electronics products, including color display driver, LED driver and portable consumer electronic products to provide a sound integrated circuit.

In the beginning of this century, the mobile phone has evolved from voice applications, into a comprehensive multimedia platform. This change has made a major breakthrough in the use of these communication tools. 5 years ago, the user will only use mobile phone almost as voice communication, today you can exchange text messages, read and write email using a mobile phone, but also can share photos, browse the Internet, shooting video, and even can activate the integrated global positioning system from mobile phone. These applications are focused on the phone's display screen, so the user faces the screen than the time to talk to the phone. In addition, mobile phone screen more and more, with higher resolution, the power required is increased. The consumption of electricity is used mostly for the screen, the screen of LED lighting, because the LED driver chip (such as LDS8866, LDS8865 and LDS8864) LED power supply control, so in terms of performance, even if only a little improvement, the whole life is enough to bring the benefits of mobile phone battery mo.

Leadies new charge pump LED driver series provides many strengths for portable application designer. In order to extend the battery life, the new series of integrated PowerLite current regulator and 1.33 times the advantages of charging pump to improve the efficiency of up to 95%. Ultra low voltage regulator PowerLite current regulator internal consumption of the conversion voltage drop is only 50 MV (mV), compared to other products can be maintained for a long time the highest efficiency. In order to improve the current matching of the system, the maximum LED current of the device is set by the built-in non voltage memory (NVM). In addition, the PWM interface can be used for dynamic backlight brightness control. The component uses a tiny 16 pin TQFN package (3mm * 3mm).

Said the director general manager leadies LED driver and vice president Donato Montanari: "we are very pleased to launch 3 6 charge pump circuit LED drive current regulator by using PowerLite products, more efficiency to achieve 95%. The portable applications need to add more dynamic display functions, such as the Internet, movies and games, the core features of leadies LED drive will continue to improve the required components: longer battery life. Our PowerLite current regulator addresses the biggest problem associated with the charge pump LED drive, i.e., the high efficiency state (1 fold mode) to the conversion of the lower power state. We can extend the battery life by up to 20% by reducing the voltage difference of the drive to a minimum of 50 mv. "

LDS8866 profile

LDS8866 is a highly efficient multi mode boost fractional charge pump, which is capable of driving an ultra-low voltage drop of up to 6 LED. Contains 1.33 times the boost mode fractional charge pump and ultra low dropout PowerLite current regulator, so the efficiency is increased to 95%. 1.33 times mode without additional external capacitor. PWM1/PWM2 logic input gives chip enable control and PWM mode LED brightness control function. The highest LED current is set by the original factory, which can be adjusted to a current level from 0.5 mA to 32 ma. Boost mode charge pump supports multiple input voltages from 2.7 volts to 5.5 volts. The device uses a 16 pin TQFN package (3mm * 3mm), with a maximum height of only 0.8 mm.

LDS8865 profile

LDS8865 is a highly efficient multi mode boost fractional charge pump, which is capable of driving an ultra-low voltage drop of up to 6 LED. Contains ultra low dropout PowerLite? Current regulator to improve efficiency to 93%. PWM1/PWM2 logic input gives chip enable control and PWM mode LED brightness control function. The highest LED current is set by the original factory, which can be adjusted to a current level from 0.5 mA to 32 ma. Boost mode charge pump supports multiple input voltages from 2.7 volts to 5.5 volts. Devices using 16 pin TQFN package (3 mm x 3 mm), the highest height of only 0.8 mm.

LDS8864 profile

LDS8864 is a highly efficient multi mode boost mode fractional charge pump, it can drive up to 6 LED ultra low voltage differential, so that the efficiency of up to 90%. PWM1/PWM2 logic input gives chip enable control and PWM mode LED brightness control function. The highest LED current is set by the original factory, which can be adjusted to a current level from 0.5 mA to 32 ma. Boost mode charge pump supports multiple input voltages from 2.7 volts to 5.5 volts. Devices using 16 pin TQFN package (3 mm x 3 mm), the highest height of only 0.8 mm. Details can be browsed www.leadis.com details can be viewed www.leadis.com

Brief introduction of Leadis Technology

Headquartered in Sunnyvale California Leadis Technology Co. Ltd. (Leadis Technology, Inc.) is engaged in the design, development and sales of mobile phones and used to provide enhanced and consumer electronic product