Nanjing Micro One ME2129 Step-Up Switching Regulator Datasheet

This datasheet details the ME2129, an ultra-small package CMOS step-up switching regulator with PWM/PFM control, featuring a 300kHz oscillator and output…

Nanjing Micro One ME2129 Step-Up Switching Regulator Datasheet - cover page
Brand
Nanjing Micro One Electronics Inc.
Category
Other Electronics
Document type
Datasheet
Language
English
Pages
13
File format
PDF
File size
1.9 MB
Published
05 November, 2026
Updated
05 November, 2026
MD5 checksum
1A8A12C64A6B3F226F280C8A574301B4
PDF
Nanjing Micro One ME2129 Step-Up Switching Regulator Datasheet PDF

About this manual

The ME2129 series is a CMOS step-up switching regulator designed for high efficiency and high output current applications. It integrates a reference voltage source, oscillation circuit, error amplifier, phase compensation circuit, and a PWM/PFM switching control circuit. The device switches to PFM control under light loads to prevent efficiency decline. It operates with an external low-ON-resistance N-channel power MOSFET and supports an output voltage range of 1.5V to 6.5V with an accuracy of ±2%.

What's inside

  • Description
  • Features
  • Pin Configuration
  • Absolute Maximum Ratings
  • Electrical Characteristics
  • External Parts Selection
  • Typical Application Circuit
  • Typical Performance Characteristics

Specifications

Oscillator Frequency300 kHz
Output Voltage Range1.5V ~ 6.5 V
Output Voltage Accuracy±2%
Soft Start Time2 ms
Operating Temperature Range-25~+85 °C
Package TypeSOT-23-5
Max Duty Ratio78 %

Frequently asked questions

What is the recommended inductor value for the ME2129?

The recommended inductances are 22 to 100 µH inductor for ME2129.

What type of diode is suggested for the external circuit?

A Schottky diode such as IN5817 or IN5819 is suggested.

What is the minimum capacitance required for the output?

The capacitor value should be 10 µF minimum.

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