FAN5614 – Low Dropout LED Driver for White, Blue or any Color LED
The Fairchild FAN5611/12/13/14 low-dropout product family is designed to drive two to four parallel LEDs, providing matched current source bias for all color LEDs. The LED current is set by an external resistor, RSET. The FAN5611/13 supports four parallel LEDs with up to 160mA bias current (up to 40mA per output).
The FAN5612 supports three LEDs with up to 120mA bias current (40mA per output). The FAN5614 drives two high-current LEDs (80mA per output). Pin I1 should always be connected to an LED to provide a matched current for any additional LEDs. The FAN5612/13 and 14 are selected using an ENABLE pin. When the chip is not selected (ENABLE pin is LOW), the supply current drops to less than 1µA. The FAN5611, FAN5612, and FAN5614 are available in an SC-70 package. The FAN5611 and FAN5613 are available in MLP packages.
Features
- LED Drivers for parallel-connected LEDs(2 to 4)
- Ultra-low voltage drop (< 300mV) to support direct Li-ion applications
- No EMI, no switching noise
- No external components needed for current matching
- Both analog and PWM brightness control
- FAN5611, FAN5613 feature up to 160mA bias current (up to 40mA for each LED)
- FAN5612 features up to 120mA bias current (up to 40mA for each LED)
- FAN5614 features up to 160mA bias current (up to 80mA for each LED)
- Enable/Shutdown control (FAN5612, FAN5613, FAN5614)
- Shutdown current <1µA
- Small footprint SC-70 and MLP
Applications
- Cell Phones
- PDA, DSC, MP3 Players
- Handheld Computers
- LCD Display Modules
- Keyboard Backlight
- LED Displays
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