- MPQ4253A-AEC1
MPQ4253A-AEC1
36V, Step-Down Converter, Supports One Type-A, One Type-C Dual USB Charging Ports for Automotive, AEC-Q100 Qualified
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Description
The MPQ4253A-AEC1 integrates a monolithic, step-down, switch-mode converter with two USB current-limit switches and charging port identification circuitry for each port. The MPQ4253A-AEC1 achieves up to 6A of output current (IOUT), with excellent load and line regulation across a wide input supply range.
The USB outputs are fixed as one Type-A port and one Type-C port. Each USB switch is current-limited. The USB1 port supports USB Type-C 5V @ 3A DFP mode. The USB2 port supports DCP schemes for battery charging specification (BC1.2), Apple divider 3 mode, and 1.2V/1.2V mode, eliminating the need for outside user interaction. The MPQ4253A-AEC1 buck and USB2 output is always on if EN is high. The USB1 port capability automatically changes to 1.5A when USB2 detects that a device is plugged in.
The step-down converter uses peak current mode control to regulate the output voltage (VOUT). Under light-load conditions, it enters pulse-frequency modulation (PFM) mode to achieve high light-load efficiency. Full protection features include hiccup current limiting, output over-voltage protection (OVP), and thermal shutdown. The device supports load-shedding mode for the USB1 port. When entering load-shedding, the Type-C advertised current capability changes to 1.5A.
The MPQ4253A-AEC1 requires a minimal number of readily available, standard external components, and is available in a QFN-26 (5mmx5mm) package.
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Features & Benefits
- All-In-One USB Type-C + USB Type-A Solution
- USB Type-C Automatically Enters 1.5A Load Capability when the USB Type-A Port Detects a Device Is Plugged In
- Default Frequency Spread Spectrum Based on 480kHz (FREQ = Float)
- Auto-PFM/PWM Operation
- Wide 6V to 36V Operating Input Voltage (VIN) Range
- Selectable Output Voltage (VOUT): 5.1V, 5.17V, or 5.3V
- 90mV Line Drop Compensation
- Accurate USB1/USB2 Output Current (IOUT) Limit
- 18mΩ/15mΩ Low Internal RDS(ON) Buck Power MOSFETs
- 18mΩ/18mΩ Low Internal RDS(ON) USB1/USB2 Power MOSFETs
- 250kHz to 1MHz Adjustable Frequency
- Hiccup Current Limit for Both Buck and USB
- Supports DCP Schemes for BC1.2, Apple Divider 3 Mode, and 1.2V/1.2V Mode
- Supports USB Type-C 5V @ 3A DFP Mode
- Available in a QFN-26 (5mmx5mm) Package
- Available in AEC-Q100 Grade 1

Active Part Numbers:
MPQ4253AGU-AEC1-Z MPQ4253AGU-AEC1-P
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MPQ4253A-AEC1 Resources
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