ME2149 Power Management IC – 1A DC/DC Step-Up Converter | 0.9–6V, 1MHz, SOT23-5 / SOT89-5 / SOP8

The ME2149 is a high-performance DC/DC step-up (boost) converter IC with a built-in NMOS power switch, designed for compact and efficient voltage boosting applications.
It operates from a 0.9V to 6V input voltage range and supports adjustable output voltages up to 20V using a 1.25V feedback reference.

Featuring PFM/PWM control and a 1MHz switching frequency, the ME2149 delivers up to 1A output current with ±2% output accuracy, making it ideal for 3V to 5V boost conversion in space-constrained designs.

Key Specifications

• Input Voltage (VIN): 0.9V – 6V

• Output Voltage (VOUT): Adjustable (<20V, VFB = 1.25V)

• Output Current (IOUT): Up to 1A

• Switching Frequency (FOSC): 1MHz

• Operating Mode: PFM / PWM

• Topology: Built-in NMOS

• Output Accuracy: ±2%

• Package: SOT23-5, SOT89-5, SOP8

Applications

• Portable electronics

• Power banks

• Embedded systems

• Battery-powered devices

Features

• High-efficiency boost conversion

• High switching frequency for small external components

• Wide output voltage capability

• Multiple package options