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Monolithic Power Systems (MPS) MP3383 Step-Up WLED Controllers include four LED current channels. These controllers can expand the number of LED channels with two or more ICs in parallel sharing a single power source. The MP3383 WLED controllers employ peak current control mode with a fixed Switching Frequency (fSW) that is configurable through an external setting resistor. These controllers drive an external MOSFET to boost up the output voltage from a 6V to 33V input voltage (VIN) supply range.
The MP3383 WLED controllers feature a 4-string, maximum 400mA/string WLED driver, 80V absolute maximum rating for each string, 3% current accuracy, and LED open and short protection. These controllers also feature configurable recoverable Over-Voltage Protection (OVP), Over-Temperature Protection (OTP), and short inductor and diode protection. The MP3383 WLED controllers support direct Pulse Width
Modulation (PWM) dimming and analog dimming using a PWM input. These controllers are designed to drive WLED arrays for large LCD panel backlighting applications. Typical applications include desktop LCD flat-panel displays, all-in-one PCs, and 2D and 3D LCD TVs.
