RN5T649 Series

Charge pump for White LED

Data Sheet
Data Sheet
Rev. 1.2 (1.00MB)

RN5T649 contains a constant frequency charge pump, which is optimized for White LED application.
Output enable/disable, LEDs current and LDOs ON/OFF are individually controllable through single wire serial pulse I/F.

  • White LED Charge Pump
  • Current capability: Up to 92mA
  • 1x/1.33x/1.5x switchable charge pump mode
  • Power up four LEDs for backlight: Up to 23mA/LED
  • Luminance control with 32steps from 0.25mA to 23mA
  • Soft-start
  • Power Supply Function
  • LDO (150mA) x 2 (ON/OFF control through single wire serial pulse I/F)
  • LDO output voltage is settable in 0.05V step in range of 1.2V to 3.3V
  • Over current protection (All Regulators) and thermal shutdown
  • Others
  • UVLO
  • Short-circuit Protection
  • Package
  • 20pin QFN package (Body size: 3.0 x 3.0 x 0.75mm, Pin pitch 0.4mm)
  • Process
  • CMOS process
  • ・Wireless Handset
  • ・MP3 players, PDA
  • ・Digital Still Cameras
  • ・Portable GPS
Data Sheet Package Info.
RN5T649 Series
Rev. 1.2 (1.00MB)		 QFN28

All PDF files are less than 1MB unless otherwise stated.

  • Buy Products / Order Sample

Distributors

Ricoh semiconductor products are available at those dealers.

Information

Page Top