This reference design is for buck-boost LED drivers. The design uses a current-mode high-brightness LED driver, the MAX16834, to implement this design using the MAX16834 evaluation (EV) board. This application note provides design notes, schematics, bill of materials (BOM), and performance data. In this reference design, the buck-boost converter (referenced to the input voltage) generates a 350mA current that drives four white LEDs (WLEDs) from a 7V to 18V DC supply and is designed to use the MAX16834 current-mode high-brightness (HB) LED driver.
MAX16834 pdf datasheet: http://
- Input voltage: 7V to 18V
- Input voltage ripple: 100mV PP
- LED current: 350mA
- LED current ripple: 5% (maximum)
- LED forward voltage: 3.5V (at 350mA)
- Number of LEDs: 4 (maximum)
- Output overvoltage protection: 17.2V
- V IN , PGND: power input
- PWMDIM, SGND: PWM dimming input
- LED+: connect LED anode to LED+
- LED-: Connect LED cathode to LED-
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