Backlight LED Driver AN37010A

  AN37010A is a 4-channel LED driver IC with built-in step-up DC-DC converter, for LCD TV backlight. It is possible to drive series-connected LEDs up to the voltage of 180 V applied to each channel. Inputting PWM duty pulse for every channel externally supports the local dimming control.
Moreover, since the maximum LED current value of each 4-channel can be adjusted by external applied voltage, either normal mode or backlight scan mode can be used by selecting the maximum LED peak current value.

• LED driver IC with 4-channel constant current output
• Integrated 185V, 2Ω (typ.) MOSFETs for LED Driver Stages
• LED drive current range of each channel : 10 mA to 200 mA
• Dimming control by individual PWM Dimming for each channel
• Setting the common peak current value for all channels by external applied voltage
• Built-in various protection functions
      Thermal shutdown protection
      Over-voltage protection
      Over-current protection
      LED abnormal detection       etc.
• Built-in 5V regulator for internal circuits of IC
• The switching frequency of DC-DC converter is synchronized with an external signal

• LED Backlighting for LCD-TV sets and LCD monitors