ME3118 Power Management IC – 4A Synchronous DC/DC Buck Converter | 4.5–18V, 500kHz, ESOP8

The ME3118 is a high-performance Power Management IC integrating a synchronous DC/DC step-down (buck) converter for medium-to-high current applications.
It supports a 4.5V to 18V input voltage range and provides an adjustable output voltage from 1.2V to 5V using a 0.8V feedback reference.

Delivering up to 4A output current, the ME3118 achieves excellent output accuracy of ±1.5% and stable regulation.
Its 500kHz switching frequency ensures reliable performance with optimized efficiency and EMI control.

Key Specifications

• Input Voltage (VIN): 4.5V – 18V

• Output Voltage (VOUT): Adjustable (1.2V – 5V, VFB = 0.8V)

• Output Current (IOUT): Up to 4A

• Quiescent Current (IQ): 1.6mA

• Switching Frequency (FOSC): 500kHz

• Operating Mode: Synchronous PWM

• Output Accuracy: ±1.5%

• Packages: ESOP8, DFN3×3-8L

Applications

• Industrial power modules

• Consumer electronics

• Embedded systems

• Communication equipment

Features

• High output current up to 4A

• Tight ±1.5% output accuracy

• Synchronous buck architecture

• Robust thermal performance

• ESOP8 and DFN packages