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Supplement the MAX6948 WLED driver with external PWM control

Posted: 07 Jan 2010  Print Version  Bookmark and Share Subscribe

Keywords: WLED driver  MAX6978 driver  PWM control 

[Summary of tips] The MAX6948 WLED driver accepts input voltages between +2.7V to +5.5V and boosts the output voltage up to +28V to drive the backlight in cellphones. If the nominal forward voltage of a WLED is 3V, then the MAX6948's 28V-rated high-voltage port can be used to drive 9 WLEDs in series for cellphone LCD screen backlighting. This hi......
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