LTC3219 Description
The LTC®3219 is a highly integrated multidisplay LED driver. The device contains a high efficiency, low noise charge pump to provide power to nine universal LED current sources. The LTC3219 requires only five small ceramic capacitors to form a plete LED power supply and current controller.
LTC3219 Key Features
- Multimode Charge Pump Provides Up to 91% Efficiency
- Slew Limited Switching Reduces Conducted and Radiated Noise (EMI)
- Up to 250mA Total Output Current
- Nine 28mA Universal Current Sources with 64-Step
- Independent On/Off, Brightness Level, Blinking and
- Internal Current Reference
- Configurable ENU Pin for Asynchronous LED On/Off Control
- Low Noise Charge Pump Operates in 1x, 1.5x or 2x Mode for Optimal Efficiency
- Automatic or Forced Mode Switching
- Internal Soft-Start Limits Inrush Current
LTC3219 Applications
- Video Phones with QVGA+ Displays