MPQ3522-AEC1

MPQ3522-AEC1

20V, 2A, Ultra-Compact, Low Quiescent Current, Synchronous Step-Down Converter, AEC-Q100 Qualified

Datasheet

Description

The MPQ3522 is a configurable-frequency (350kHz to 2.5MHz), synchronous, step-down switching converter with an integrated, internal high-side MOSFET (HS-FET) and low-side MOSFET (LS-FET). The device provides up to 2A of highly efficient output current (I_OUT) with peak current mode control.

The wide 3.3V to 20V input voltage (V_IN) range 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 the switching and gate driver losses. An open-drain power good (PG) signal indicates whether the output voltage (V_OUT) is within 94.5% to 105.5% 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 (LDO) mode are provided for automotive cold-crank conditions.

The MPQ3522 is available in a QFN-12 (2mmx3mm) package.

Features & Benefits

Designed for Automotive Applications:
- Continuous Operation Up to 20V
- Supports 3.1V for Cold-Crank Conditions
- Low-Dropout (LDO) Mode
- Up to 2A of Continuous Output Current (I_OUT)
- 65ns Minimum On Time (t_{ON_MIN}) and 50ns Minimum Off Time (t_{OFF_MIN})
- -40°C to +150°C Operating Junction Temperature (T_J) Range
- Available in AEC-Q100 Grade 1
Increases Battery Life:
- 1μA Shutdown Supply Current (I_SD)
- 20μA Sleep Mode Quiescent Current (I_Q)
- Advanced Asynchronous Modulation (AAM) Mode Increases Efficiency at Light Loads
- Integrated 70mΩ High-Side MOSFET (HS-FET) and 50mΩ Low-Side MOSFET (LS-FET)
Optimized for EMC/EMI Reduction:
- Frequency Spread Spectrum (FSS) Modulation
- Symmetric VIN Pinout
- CISPR25 Class 5 Compliant
- 350kHz to 2.5MHz Configurable Switching Frequency (f_SW)
- MeshConnect^TM Flip-Chip Package
Additional Features:
- Power Good (PG) Output
- Fixed Output Options: 1V, 1.8V, 2.5V, 3V, 3.3V, 3.8V, or 5V
- Over-Current Protection (OCP) with Hiccup Mode
- Available in a QFN-12 (2mmx3mm) Package with Wettable Flanks