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AP3428A - 1A STEP-DOWN DC-DC BUCK CONVERTER

Download the AP3428A datasheet PDF. This datasheet also covers the AP3428 variant, as both devices belong to the same 1a step-down dc-dc buck converter family and are provided as variant models within a single manufacturer datasheet.

General Description

The AP3428/A is a 1A step-down DC-DC converter.

At heavy load, the constant-frequency PWM control performs excellent stability and transient response.

No external compensation components are required.

Key Features

  • include over-temperature and short circuit protection, and under-voltage lockout to prevent deep battery discharge. TSOT25/TSOT25 (Type SM) for AP3428 (Top View) The AP3428/A delivers 1A maximum output current while consuming only 40μA of no-load quiescent current. Ultra-low RDS(ON) integrated MOSFETs and 100% duty cycle operation make the AP3428/A an ideal choice for high output voltage, high current.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (AP3428-Diodes.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

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AP3421B Dual 1.0A Synchronous Step-down Converters BCD Semiconductor
AP3422 800mA Synchronous DC-DC Buck Converter BCD Semiconductor
AP3427M 1.5MHZ Synchronous Step-down DC-DC Converter BCD Semiconductor

Other Datasheets by Diodes Incorporated

Part Number Description
AP3428 1A STEP-DOWN DC-DC BUCK CONVERTER
AP3427M 1.5MHz SYNCHRONOUS STEP-DOWN DC-DC CONVERTER
AP3429 2A STEP-DOWN DC-DC BUCK CONVERTER
AP3429A 2A STEP-DOWN DC-DC BUCK CONVERTER
AP3401 1A STEP-DOWN DC - DC BUCK CONVERTER

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
AP3428/A 1.5MHZ, 1A STEP-DOWN DC-DC BUCK CONVERTER Description The AP3428/A is a 1A step-down DC-DC converter. At heavy load, the constant-frequency PWM control performs excellent stability and transient response. No external compensation components are required. Pin Assignments (Top View) The AP3428/A supports a range of input voltages from 2.5V to 5.5V, allowing the use of a single Li+/Li-polymer cell, multiple Alkaline/NiMH cell, and other standard power sources. The output voltage is adjustable from 0.6V to the input voltage. The AP3428/A employs internal power switch and synchronous rectifier to minimize external part count and realize high efficiency. During shutdown, the input is disconnected from the output and the shutdown current is less than 1μA.