MP3431

21A, 16Vout High Efficiency Full-Integrated Synchronous High Power Boost Converter with Programmable Input Current Limit

Datasheet

Description

The MP3431 is a 600kHz, fixed-frequency, wide input range, highly integrated, boost converter. The MP3431 starts from an input voltage as low as 2.7V and supports up to 30W of load power from a 1-cell battery with integrated low RDS(ON) power MOSFETs.
The MP3431 adopts constant-off-time (COT) control topology, which provides fast transient response. MODE supports the selection of pulse-skip mode (PSM), forced continuous conduction mode (FCCM), and ultrasonic mode (USM) in light-load condition. The programmable 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 need for an external Schottky diode.
Full protection features include programmable input under-voltage lockout (UVLO) and over-temperature protection (OTP).
The MP3431 is available in a QFN-13 (3mmx4mm) package.

Features & Benefits

2.7V to 13V Start-Up Voltage
0.8V to 13V Operation Voltage
Up to 16V Output Voltage
Supports 30W Average Power Load and 40W Peak Power Load from 3.3V
Programmable Input Current Limit
21.5A Internal Switch Current Limit
Integrated 6.5mΩ and 10mΩ Power MOSFET
>95% Efficiency for 3.6V VIN to 9V/3A
Selectable PSM, >23kHz USM, and FCCM in Light-Load Condition
600kHz 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

Active Part Numbers:

MP3431GL-P MP3431GL-Z

Meaning of P & Z

Evaluation Tools

EV3431-L-00A Evaluation Kit 21A, High-Efficiency, Fully Integrated Synchronous Boost Converter Evaluation Board

The EV3431-L-00A evaluation board is designed to demonstrate the capability of the MP3431. The MP3431 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 30W of load power from a single-cell battery.

The MP3431 adopts constant-off-time (COT) control topology providing fast transient response. The MODE pin supports mode selection including PSM, FCCM, and USM in light-load conditions, and the integrated LS-FET and HS-FET simplify the design and save BOM cost.

The device features programmable input current limit to provide accurate overload protection while the LS-FET limits cycle-by-cycle inductor peak current. It also features programmable input UVLO and over-temperature protection. The MP3431 is available in a QFN-13 (3mmx4mm) package.

$25.00
+ tax