- MP4576
MP4576
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Description
The MP4576 is a fully integrated, fixed-frequency, synchronous step-down converter. It can achieve up to 600mA of continuous output current (IOUT) with peak current control for excellent transient response. The wide 4.5V to 60V input voltage (VIN) range accommodates a variety of step-down applications in automotive input environments. The device’s 2μA shutdown mode quiescent current (IQ) makes it ideal for battery-powered applications.
The device integrates internal high-side and low-side power MOSFETs for high efficiency without an external Schottky diode. It employs advanced asynchronous modulation (AAM) mode to achieve high efficiency under light-load conditions by scaling down the frequency to reduce switching and gate driver losses. Standard features include built-in soft start, enable control, and power good indication. A high duty cycle and low-dropout mode are provided for automotive cold crank conditions.
The MP4576 provides over-current protection (OCP) with valley current detection to avoid current runaway. It also has hiccup short-circuit protection (SCP), input under-voltage lockout (UVLO), and auto-recovery thermal protection. With internal compensation, the MP4576 can offer a very compact solution with a minimal number of readily available, standard external components. The MP4576 is available in a QFN-12 (2.5mmx3mm) package.
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Features & Benefits
- Extends Vehicle Battery Life:
- Low Quiescent Current (IQ) in Standby Mode (40μA)
- Cooler Thermals:
- Less than 8°C TJ Rise at 600mA/400kHz
- 91% Efficiency (24V to 5V, 600mA, 400kHz)
- Low-Ohmic MPS BCD FET Technology
- Low-Noise EMI/EMC:
- MeshConnectTM Flip-Chip Packaging
- Operates Outside of AM Radio Band
- Additional Features:
- Clock SYNC Output
- Power Good Output
- Internal Soft Start
- Low-Dropout (LDO) Mode
- Hiccup Over-Current Protection (OCP)
- Selectable AAM or FCCM
- Reduces Board Size and BOM:
- Integrated Compensation Network
- Available in a Small QFN-12 (2.5mmx3mm) Package

Active Part Numbers:
MP4576GQBE-Z MP4576GQBE-P
Part numbers ending in P and Z are the same parts. P and Z only indicates reel size.
Meaning of P & Z
MP4576 Resources
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PRODUCT CATEGORY
VIN (MAX) > 48VPRODUCT CATEGORY -
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