AP3429 Datasheet دیتاشیت PDF دانلود

دیتاشیت - Diodes - 2A STEP-DOWN DC-DC BUCK CONVERTER

شماره قطعه	AP3429
شرح مفصل	2A STEP-DOWN DC-DC BUCK CONVERTER
تولید کننده	Diodes
آرم
1 Page No Preview Available ! AP3429/A 1.0MHZ, 2A STEP-DOWN DC-DC BUCK CONVERTER Description The AP3429/A is a 2A 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. The AP3429/A supports a range of input voltages from 2.7V 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 AP3429/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. Other key features include over-temperature and short circuit protection, and under-voltage lockout to prevent deep battery discharge. The AP3429/A delivers 2A maximum output current while consuming only 90μA of no-load quiescent current. Ultra-low RDS(ON) integrated MOSFETs and 100% duty cycle operation make the AP3429/A an ideal choice for high output voltage, high current applications which require a low dropout threshold. The AP3429/A is available in TSOT25 package. Applications  5V or 3.3V Point of Load Conversion  Telecom/Networking Equipment  Set Top Boxes  Storage Equipment  Video Cards  DDR Power Supply Pin Assignments (Top View) EN 1 GND 2 LX 3 5 FB 4 VIN TSOT25 Features  Output Current: Up to 2A  Output Voltage: 0.6V to VIN  Input Voltage: 2.7V to 5.5V  Shutdown Current: <1μA  100% Duty Cycle Operation  1MHz Switching Frequency  Internal Soft Start  No External Compensation Required  Short Circuit Protection  AP3429: Latch Off Protection  AP3429A: Hiccup Mode Protection  Over Voltage Protection  AP3429: Latch Off Protection  AP3429A: No Latch Off Protection  Thermal Shutdown  TSOT25 package  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. AP3429/A Document number: DS36561 Rev. 3 - 2 1 of 11 www.diodes.com August 2015 © Diodes Incorporated
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