MP3437GJ-Z

MP3437GJ-Z is a 600KHz, fixed-frequency, highly integrated, synchronous boost converter with a wide input range. The MP3437’s input voltage starts at 2.7V and supports up to 20W of load power from a 1-cell battery with integrated low RDS(ON) power MOSFETs. It 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. It is used in applications such as notebooks, artificial intelligence (AI) speakers, Bluetooth speakers, portable point-of-sale (POS) systems, solid-state drive (SSD) VPP rails, and power meters.

• 2.7V to 16V start-up voltage, 0.8V to 16V operation voltage
• Automatic pass-through function in pulse skip mode (PSM), over-voltage protection
• Adaptive constant-off-time (COT) control for fast transient response
• Internal soft start (SS) and compensation, 150°C over-temperature protection (OTP)
• Shutdown current is 2μA maximum at (VEN = 0V, measured on VIN)
• Quiescent current is 3μA typ at (VFB = 1.05V, VIN = 3V, VOUT = 8V, no switching, measured on VIN)
• Switching frequency is 600KHz typical at (VIN = 3.3V, VOUT = 8V)
• Switching current limit is 9.5A typical at (VIN = VEN = 3.3V, TJ = -40°C to +125°C)
• LS-FET switch on resistance is 14mohm typical at (VIN = VEN = 3.3V, TJ = -40°C to +125°C)
• Operating junction temperature range from -40°C to +125°C, TSOT23-8 package

Notes

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