AP3427MDNTR-G1 Diodes Incorporated

NOT RECOMMENDED FOR NEW DESIGN CONTACT US AP3427M DUAL 1A, 1.5MHz SYNCHRONOUS STEP-DOWN DC-DC CONVERTER Description Pin Assignments The AP3427M is a high efficiency step-down dual channel DC-DC Top View voltage converter. The chip operation is optimized by peak-current mode architecture with built-in synchronous power MOSFET switchers. The oscillator and timing capacitors are all built-in providing an internal switching frequency of 1.5MHz that allows the use of small surface mount inductors and capacitors for portable product implementations. Integrated Soft Start (SS), Under Voltage Lock Out (UVLO), Thermal Shutdown Detection (TSD) and Short Circuit Protection are designed to provide reliable product applications. The device is available in adjustable output voltage ranging from 0.6V to 0.9xV when input voltage range is from 2.5V to 5.5V, and is able IN to deliver up to 1A for each output. The AP3427M is available in standard U-DFN3030-10 package. U-DFN3030-10 Features High Efficiency Buck Power Converter Applications Output Current: 1.0A/1.0A Post DC-DC Voltage Regulation Low R Internal Switches: 200m (V =5V) DS(ON) IN PDA and Notebook Computer Adjustable Output Voltages from 0.6V to 0.9V IN Wide Operating Voltage Range: 2.5V to 5.5V Built-In Power Switches for Synchronous Rectification with High Efficiency Feedback Voltage: 600mV 1.5MHz Constant Frequency Operation Thermal Shutdown Protection Low Drop-Out Operation at 100% Duty Cycle Input Over Voltage Protection No Schottky Diode Required Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. AP3427M Typical Applications Circuit Pin Descriptions Pin Number Pin Name Function EN1 Enable signal input of channel 1, active high 1 FB1 Feedback voltage of channel 1 2 VIN2 Power supply input of channel 2 3 GND GND. It should be connected to system ground 4, 9, Exposed Pad LX2 Connected from channel 2s Power MOSFET to inductor 5 EN2 Enable signal input of channel 2, active high 6 FB2 Feedback voltage of channel 2 7 VIN1 Power supply input of channel 1 8 LX1 Connected from channel 1s Power MOSFET to inductor 10 2 of 9 April 2020 AP3427M Diodes Incorporated www.diodes.com Document number: DS39604 Rev. 2 - 3 NEW PRODUCT