MPQ3431C-AEC1

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

Datasheet

Description

The MPQ3431C is a 450kHz, fixed-frequency, highly integrated boost converter with a wide input voltage (V_IN) range. The MPQ3431C starts up from a V_IN as low as 2.7V, and supports up to 20W of load power from a single-cell battery with integrated, low on resistance (R_DS(ON)) power MOSFETs.

Constant-off-time (COT) control 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 current limit provides accurate overload protection. The low-side MOSFET (LS-FET) limits the cycle-by-cycle inductor peak current, and the high-side MOSFET (HS-FET) eliminates the requirement for an external Schottky diode.

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

The MPQ3431C is available in a QFN-13 (3mmx4mm) package.

Features & Benefits

Guaranteed Industrial/Automotive Temperature
2.7V to 13V Start-Up Voltage
0.8V to 13V Operating Input Voltage (V_IN)
Up to 16V Output Voltage (V_OUT)
Supports 20W Average Power Load and 40W Peak Power Load from 3.3V
Configurable Peak Switching Current Limit
Integrated 6mΩ and 9.5mΩ Power MOSFETs
95% Efficiency for 3.6V V_IN to 9V/3A
Selectable Pulse-Skip Mode (PSM), >23kHz Ultrasonic Mode (USM), or Forced Continuous Conduction Mode (FCCM) under Light-Load Conditions
450kHz Fixed Switching Frequency (f_SW)
Adaptive Constant-Off-Time (COT) Control for Fast Transient Response
External Soft Start (SS) and Compensation Pins
Configurable Under-Voltage Lockout (UVLO) Protection and Hysteresis
175°C Over-Temperature Protection (OTP)
Available in a QFN-13 (3mmx4mm) Package
Available in AEC-Q100 Grade 1