Power Electronics

LED Drivers Enable Design Flexibility and Extend Battery Life in Mobile Handsets

Fairchild Semiconductor brings designers of mobile handsets, gaming devices, MP3 players and other small display applications LED drivers that deliver 92 percent peak efficiency, extending battery life. The FAN5701 and FAN5702 are 1x to1.5x charge pump-bas ed 180mA, 6-channel LED drivers that backlight TFT LCD displays in mobile electronics. Their low transition voltage from 1x to 1.5x mode allows them to operate in 1x mode for a longer time period, achieving higher efficiency. Both LED driver products can be configured to support clamshell form factor mobile handsets that have both main and secondary displays.

The FAN5702 is a configurable, 180mA, 6-channel LED driver with I2C interface. The FAN5701 is a cost-effective LED driver that uses two PWM inputs to control the brightness of a grouping of four and two LED outputs. It is ideal for applications where there is a requirement to backlight two LCD displays or to drive a high brightness LED for low power camera flash in mobile handsets.

The FAN5701 and FAN5702 are housed in compact 16-bump WL-CSP and 16-lead UMLP packages to accommodate the slimmer and smaller form factor of today's portable designs. In WL-CSP form factor the FAN5701 and FAN5702 occupy 2.56mm2, which is one of the smallest lighting solutions available in the market today and are instrumental in conserving PCB space. These LED drivers are part of Fairchild's comprehensive offering of solutions for the mobile space. These solutions are instrumental in conserving power, space and supporting the rich functionality in mobile applications.

Price (each 1,000pcs): FAN5701 = US$0.72, FAN5702 = US$0.95 FAN5701 and FAN5702 in WL-CSP form factor is in production now while the UMLP package version will be available in June 2010. Delivery: 12 weeks ARO

TAGS: Products
Hide comments

Comments

  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Publish