微桥科技产品新闻动态管理发布系统 现在是
首页 ·公司动态 ·产品动态 ·原厂动态 ·行业动态 ·技术资料 ·LED驱动 ·DC-DC ·AC-DC ·MOSFET ·音频功放 ·电池管理 ·霍尔及马达驱动 ·其他 ·联系我们

当前位置:首页>>DC-DC>>Axelite亚瑟莱特 >>AX3515-Dual 1A PWM step-down DC-DC converter   双击自动滚屏
发布者:微桥 发布时间:2012/2/17 阅读:11689次    关键字: DC-DC
AX3515-Dual 1A PWM step-down DC-DC converter


AX3515-Dual 1A Synchronous PWM step-down DC-DC converterDataSheet

GENERAL DESCRIPTION
    The AX3515 is a dual high-efficiency Pulse-Width-Modulated (PWM) step-down DC-DC converter. It is capable of delivering 1A output current over a wide input voltage range from 2.5V to 5.5V, the AX3515 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and other handheld devices.
    Two operational modes are available: PWM/Low-Dropout auto-switch and shutdown modes. Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode. No external Schottky diode is required in practical application.
    The AX3515 enters Low-Dropout mode when normal PWM cannot provide regulated output voltage by continuously turning on the upper PMOS. The AX3515 enter shutdown mode and consumes less than 0.1μA when EN pin is pulled low.
    The switching ripple is easily smoothed-out by small package filtering elements due to a fixed operation frequency of 1.4MHz. This along with small TDFN-12L (3x3) package provides small PCB area application. Other features include soft start, lower internal reference voltage with 2% accuracy, over temperature protection, and over current protection.

FEATURES
- 2.5V to 5.5V Input Voltage Range
- Adjustable Output Voltage from 0.6V to VIN
- 1A Output Current/per channel
- High Efficiency : up to 95%
- No Schottky Diode Required
- 1.4MHz Fixed-Frequency PWM Operation
- Small 12-Lead TDFN Package

本文共分 1

  • 上篇文章AXELITE-LED Lighting and Backlight Solution AC-DC
  • 下篇文章AX3515A-Dual 1A PWM step-down DC-DC converter
  •  
     

    版权所有 Copyright Micro Bridge Technology Co.,Ltd. All rights reserved.粤ICP备05065909号