●General Description

BD9267KUT is a white LED diver used on backlight of Medium/Large-sized LCDs. This IC can achieve dimming function by SPI control. And through the SPI correspondence, it can set the ON/OFF of each switch, analog dimming and etc. The signals of PWM dimming can set the frequency, ON time and delay of PWM by inputting the external signals to the register. BD9267KUT has equipped several protection functions to deal with the abnormal states, including LED OPEN protection, LED SHORT protection, external current setting resistance SHORT protection, external MOS transistor SHORT protection, etc. So it can be used in a wide output voltage range and various load conditions.

●Features

■ 16-ch constant current driver (external FET(NMOS）is equipped.)

■ LED voltage can be set externally.

■ PWM dimming and Analogue dimming can be controlled by SPI.

■ LED Abnormal operation detection circuit (OPEN protection/ SHORT protection) is equipped.

■ LED SHORT protection detection voltage is adjustable (LSP terminal)

■ LED SHORT protection detection CH

■ FAIL INDICATION function is equipped by ERR_DET terminal.

■ 3 lines serial interface

■ Package: TQFP64U

●Key Specifications

■ VCC power supply range： 9.0V～35.0V

■ DVDD power supply range： 3.0V～3.6V

■ CLK frequency setting range ： 100～10000kHz

■ Operating Circuit current range： 2.4mA(typ.)

■ Operating temperature range： -40℃～+85℃

●Applications

TV、 PC display

Other LCD backlight