ME2109 Power Management IC – 1A DC/DC Step-Up Converter | 0.9–6V, 300kHz, SOT23-5

The ME2109 is a flexible DC/DC step-up (boost) controller IC designed to work with an external NMOS power transistor, enabling higher power scalability.
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.

Using PFM/PWM control at 300kHz, the ME2109 delivers up to 1A output current with ±2% output accuracy, ideal for 3V to 5V and higher boost applications.

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): 300kHz

• Operating Mode: PFM / PWM

• Topology: External NMOS

• Output Accuracy: ±2%

• Package: SOT23-5

Applications

• High-power boost converters

• Industrial control modules

• Portable power systems

• Custom DC power rails

Features

• External MOSFET flexibility

• Wide output voltage range

• Stable mixed-mode operation

• Small SOT23-5 package