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Step-Up Converters
MPQ3431A-AEC1

MPQ3431A-AEC1

21A, High-Efficiency, Fully Integrated, Synchronous Boost Converter with Configurable Input Current Limit, AEC-Q100 Qualified

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Description

The MPQ3431A is a 450kHz, fixed-frequency, highly integrated boost converter with a wide input range. The MPQ3431A starts from an input voltage as low as 2.7V and supports up to 20W of load power from a single-cell battery with integrated low R_DS(_ON) power MOSFETs.

The MPQ3431A adopts constant-off-time (COT) control topology, which provides fast transient response. The MODE pin allows the user to select pulse-skip mode (PSM), forced continuous conduction mode (FCCM), or ultrasonic mode (USM) under light-load conditions. The configurable input current limit provides accurate overload protection. The low-side MOSFET limits the cycle-by-cycle inductor peak current, and the high-side MOSFET eliminates the requirement for an external Schottky diode.

Full protection features include programmable input under-voltage lockout (UVLO) and over-temperature protection (OTP).

The MPQ3431A is available in a QFN-13 (3mmx4mm) package.

Features & Benefits

Guaranteed Industrial/Automotive Temp
2.7V to 13V Start-Up Voltage
0.8V to 13V Operation Voltage
Up to 16V Output Voltage
Supports 20W Average Power Load and 40W Peak Power Load from 3.3V
Configurable Input Current Limit
21.5A Internal Switch Current Limit
Integrated 6mΩ and 9.5mΩ Power MOSFETs
95% Efficiency for 3.6V VIN to 9V/3A
Selectable PSM, >23kHz USM, and FCCM under Light-Load Conditions
450kHz Fixed Switching Frequency
Adaptive COT for Fast Transient Response
External Soft Start and Compensation Pins
Programmable UVLO and Hysteresis
150°C Over-Temperature Protection (OTP)
Available in a QFN-13 (3mmx4mm) Package
AEC-Q100 Qualified

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