The MP3437 is a 600kHz, fixed-frequency, highly integrated, synchronous boost converter with a wide input range. The MP3437's input voltage starts as low as 2.7V and supports up to 20W of load power from a 1-cell battery with integrated low RDS(ON) power MOSFETs.
The MP3437 utilizes a constant-off-time (COT) control topology, which provides a fast transient response. The QFN package has a MODE pin that supports the selection of pulse-skip mode (PSM), forced continuous conduction mode (FCCM), and ultrasonic mode (USM) under light-load conditions. The cycle-by-cycle current limit on the low-side MOSFET (LS-FET) prevents current runaway and the high-side
MOSFET (HS-FET) eliminates the need for an external Schottky diode.
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EV3437-RP-00A Evaluation Board is designed to demonstrate the capability of MP3437. It is a 600kHz fixed frequency, wide input range, highly integrated boost converter. It starts from an input voltage as low as 2.7V, and supports up to 20W load power from 1-cell battery.
MP3437 adopts constant-off-time (COT) control topology providing fast transient response. QFN package has MODE pin which can support mode selection of PSM, FCCM and USM in light load condition. And the integrated low-side and high-side MOSFET simplify the design and save BOM cost.
The MP3437 supports auto-pass-through mode when VIN is higher than VOUT-SET in PSM mode. It also features with programmable input under-voltage lockout (UVLO) and over temperature protection.
The MP3437 is available in QFN-10 (2mmx2.5mm) and TSOT23-8 package. This board is available in QFN-10 package.