- MP4436/A
MP4436/A
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Description
The MP4436/MP4436A is a synchronous, step-down switching regulator with a configurable frequency and integrated internal high-side and low-side power MOSFETs. It provides a maximum 6A of highly efficient output, as well as current mode control for a fast loop response.
The wide 3.3V to 45V input range accommodates a variety of step-down applications in an automotive input environment. A 1.7μA shutdown mode quiescent current allows the part to be used in battery-powered applications.
High power conversion efficiency across a wide load range is achieved by scaling down the switching frequency in light-load conditions to reduce the switching and gate driver losses.
An open-drain power good signal indicates that the output is within 93% to 106% of its nominal voltage.
Frequency foldback helps prevent inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation.
High duty cycle and low-dropout mode are provided for automotive cold crank conditions.
The MP4436/MP4436A is available in a QFN-20 (4mmx4mm) package.
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Features & Benefits
- Wide 3.3V to 45V Operating Voltage Range
- 6A Continuous Output Current
- 1.7μA Low Shutdown Supply Current
- 18μA Sleep Mode Quiescent Current
- Internal 48mΩ High-Side and 20mΩ Low-Side MOSFET
- 350kHz to 530kHz Configurable Switching Frequency for Car Battery Applications
- Synchronize to External Clock
- Multi-Phase Capability
- Out-of-Phase Synchronized Clock Output
- MP4436A: Frequency Spread Spectrum (FSS) Option for Low EMI
- Symmetric VIN for Low EMI
- Power Good Output
- External Soft Start
- 100ns Minimum On Time
- Selectable Advanced Asynchronous Mode (AAM) or Forced Continuous Conduction Mode (FCCM)
- Low-Dropout Mode
- Hiccup Mode for Over-Current Protection
- Available in a QFN-20 (4mmx4mm) Package

Active Part Numbers:
MP4436AGR-P MP4436AGR-Z MP4436GR-P MP4436GR-Z
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MP4436/A Resources
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VIN (MAX) 30V TO 48VPRODUCT CATEGORY -
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