MP3371GR-0000-P

MP3371GR-0000-P is a MP3371 series boost WLED driver with an I²C interface. The synchronous boost converter with 8 current channels with a max of 50mA/channel is designed to drive WLED arrays for LCD panels in tablets and notebook backlighting applications. The MP3371 uses peak current control mode and pulse-width modulation (PWM) control to maintain boost converter regulation. The MP3371 employs a standard I²C digital interface to set the operation mode, switching frequency, full-scale current for each channel, sync or non-sync mode, dimming mode and duty, and various protection thresholds. The MP3371 features high efficiency due to low headroom voltage for LED regulation and a small resistance of the switching MOSFET. The synchronous rectifier saves PCB size and total BOM cost. Mixed dimming mode through external PWM input or I²C interface with 6.25%, 12.5%, 25%, or 50% transfer point, 14- Bit PWM duty resolution. Applications include automotive displays.

• Synchronous converter with 50V LS-FET/HSFET 155m/235mohm on resistance
• 3V to 30V input voltage range, 470mV LED regulation voltage at 20mA
• Max 2.5% current matching, A1 pins for two I²C addresses
• 0mA to 50mA full-scale LED current, 8 bits, 0.196mA/step
• LED short/open, OTP, OCP, inductor, or diode short protection
• 2.5V/5V/7.5V/10V LED short threshold, 24V/31V/37.5V/45V OVP threshold
• 1.8A/2.5A current limit, cascade function to share power stage
• Analog dimming through external PWM input or I²C interface, 10-bit resolution
• PWM dimming through external PWM input or I²C interface, 14-bit resolution
• QFN-24 (4mmx4mm) package, operating junction temperature range from -40°C to +125°C(TJ)

Notes

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