MPQ4360-AEC1

40V, 6A, Low I_Q, Synchronous Step-Down Converter, AEC-Q100 Qualified

Description

The MPQ4360 is a configurable-frequency, synchronous, step-down switch-mode converter with integrated, internal high-side and low-side power MOSFETs. The device provides up to 6A of highly efficient output current (I_OUT), with current mode control for fast loop response. The wide 3.3V to 40V input voltage (V_IN) range accommodates a variety of step-down applications in an automotive input environment. The 1.7μA shutdown current (ISD) allows the part to be used in battery-powered applications.

High power conversion efficiency across the wide load range is achieved by scaling down the switching frequency (f_SW) under light-load conditions to reduce the switching and gate driving losses. An open-drain power good (PG) signal indicates whether the output voltage (V_OUT) is between 95% and 105% of its nominal voltage.

Frequency foldback prevents inductor current (I_L) runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. A high duty cycle and low-dropout mode are provided for automotive cold-crank conditions.

The MPQ4360 is available in a QFN-20 (4mmx4mm) package.

Features & Benefits

Designed for Automotive Applications:
- Wide 3.3V to 40V Operating Input Voltage (V_IN) Range
- Low-Dropout Mode
- 6A Continuous Output Current (I_OUT)
- 100ns Minimum On Time (t_{ON_MIN})
- Multi-Phase Capability
- -40°C to +150°C Junction Temperature (T_J) Range
- Available in AEC-Q100 Grade 1
Increased Battery Life:
- Low 1.7μA Shutdown Current (I_SD)
- 22μA Quiescent Current (I_Q) with Switching
- Advanced Asynchronous Modulation (AAM) Mode Increases Efficiency at Light Loads
High Performance for Improved Thermals:
- Internal 50mΩ High-Side MOSFET (HS-FET) and 22mΩ Low-Side MOSFET (LS-FET)
Optimized for EMC/EMI:
- 350kHz to 1000kHz Configurable Switching Frequency (f_SW)
- Up to 2.2MHz Configurable f_SW for ≥5V V_OUT Car Battery Applications
- Symmetric VIN Pinout
- Synchronized to External Clock
- Out-of-Phase Synchronized Clock Output
- CISPR25 Class 5 Compliant
- MeshConnect™ Flip-Chip Package
Additional Features:
- Power Good (PG) Output
- External Soft Start (SS)
- Over-Current Protection (OCP) with Hiccup Mode
- Available in a QFN-20 (4mmx4mm) Package with Wettable Flank