MPQ4341-AEC1

MPQ4341-AEC1

36V, 5A, Ultra-Low Quiescent Current, Synchronous Step-Down Converter with Multi-Phase Capability, AEC-Q100 Qualified

Datasheet

Description

The MPQ4341 is a configurable-frequency (350kHz to 2.5MHz), synchronous step-down switching converter with integrated, internal high-side MOSFET (HS-FET) and low-side power MOSFET (LS-FET). It provides up to 5A of highly efficient output current (I_OUT) with fixed-frequency, zero-delay pulse-width modulation (PWM) (ZDP) control for near optimal transient response.

The wide 3.3V to 36V input voltage (V_IN) range with 42V load dump support accommodates a variety of step-down applications in automotive input environments. A 1μA shutdown current (I_SD) allows the device to be used in battery-powered applications.

High power conversion efficiency across a wide load range is achieved by scaling down the switching frequency (f_SW) under light-load conditions to reduce switching and gate driver losses. An open-drain power good (PG) signal indicates whether the output voltage (V_OUT) is within 94% to 106% of its nominal voltage range. Thermal shutdown provides reliable, fault-tolerant operation. A high duty cycle and low-dropout (LDO) mode are provided for automotive cold-crank conditions.

The MPQ4341 is available in a QFN-17 (3mmx4mm) package, and it is AEC-Q100 qualified.

Features & Benefits

Designed for Automotive Applications
- 42V Load Dump Tolerance
- Supports Up to 3.1V Cold Crank
- Low-Dropout (LDO) Mode
- Up to 5A of Continuous Output Current (I_OUT)
- Continuous Operation Up to 36V
- Zero-Delay PWM (ZDP) Control
- Multi-Phase Capability
- 20ns Minimum On Time
- -40°C to +150°C Operating Junction Temperature (T_J) Range
- Available in AEC-Q100 Grade 1
Increases Battery Life:
- 1μA Low Shutdown Current (I_SD)
- 3μA Sleep Mode Quiescent Current (I_Q)
- Advanced Asynchronous Modulation (AAM) Mode Increases Efficiency under Light Loads
High Performance for Improved Thermals:
- Internal 60mΩ High-Side MOSFET (HS-FET) and 35mΩ Low-Side MOSFET (LS-FET)
Optimized for EMC/EMI:
- 350kHz to 2.5MHz Configurable Switching Frequency (f_SW)
- Symmetric V_IN Pinout
- Frequency Spread Spectrum (FSS) Modulation
- CISPR25 Class 5 Compliant
- MeshConnect^TM Flip-Chip Package
Additional Features
- Fixed Output Options: 1V, 1.1V, 1.8V, 2.5V, 3V, 3.3V, 3.8V, or 5V
- Synchronizable to External Clock
- Synchronized Clock Output
- Power Good (PG) Output
- External Soft Start (SS)
- Over-Current Protection (OCP) with Hiccup Mode
- Available in a QFN-17 (3mmx4mm) Package with Wettable Flanks