MP3383GS-P

MP3383 is a step-up controller with four LED current channels, designed to drive WLED arrays for large LCD panel backlighting applications. The MP3383 can expand the number of LED channels with two or more ICs in parallel sharing a single power source. The MP3383 employs peak current control mode with a fixed switching frequency (fSW) that is configurable via an external setting resistor. The MP3383 drives an external MOSFET to boost up the output voltage (VOUT) from a 6V to 33V input voltage (VIN) supply. It also regulates the current in each LED string to the value set by an external current-setting resistor. The MP3383 applies four internal current sources for current balancing. The current matching achieves 1.8% regulation accuracy among strings. The low regulation voltage on the LED current sources reduces power loss. Applications include desktop LCD flat-panel displays, all-in-one PCs, 2D and 3D LCD TVs.

• 4-string, maximum 400mA/string WLED driver, 6V to 33V input voltage (VIN) range
• 12V gate voltage (VGATE) (VIN <gt/> 13V
• 80V absolute maximum rating for each string
• 1.8% current matching accuracy between each string
• 3% current accuracy, direct PWM dimming
• Analog dimming mode with PWM input, cascading capability with a single power source
• LED open and short protection
• Configurable recoverable overvoltage protection (OVP), overtemperature protection (OTP)
• Short inductor and diode protection
• SOIC-16 package style

Notes

MPS part numbers ending in "-P" and "-Z" are the same parts. P & Z only indicates reel size.