ADP2147ACBZ-130-R7

ADP2147 is a high-efficiency, low-quiescent current, step-down DC-DC regulator whose output voltage can be switched between two different settings with optional pin control. The entire solution requires only three small external components.

The buck regulator automatically switches the operating mode based on the load current level, maximizing efficiency. When the output load is high, the buck regulator operates in PWM mode. When the load current drops below a predefined threshold, the regulator operates in power saving mode (PSM) to improve light load efficiency.

ADP2147 operates from a 2.3V to 5.5V input voltage and can be powered by a single lithium or lithium polymer battery, multiple alkaline or NiMH batteries, PCMCIA, USB, and other standard power supplies. A maximum load current of 800mA is achieved over the entire input voltage range.

ADP2147 provide a fixed output voltage of 0.8 V to 3.3 V. To minimize the number of external components and increase efficiency, all versions have built-in power switches and synchronous rectifiers. ADP2147 has a built-in soft-start function with an internal compensation mechanism. During logic-controlled shutdown, the input is disconnected from the output ADP2147 draws less than 0.2 μA (typical) from the supply.

Other important features include undervoltage latching to prevent deep battery discharge and soft start to prevent overshoot of input current during start-up. ADP2147 available in a 6-pin WLCSP package.

apply

• PDA和掌上型电脑
• 无线手机
• 数字音频、便携式媒体播放器
• 数码相机、GPS导航装置
• 低功耗便携式医疗设备

• Advantages and features:

  • 输入电压：2.3 V至5.5 V
  • 峰值效率： 95%
  • 3 MHz固定工作频率
  • 低静态电流： 23 μA
  • 超低关断电流：0.2 μA（典型值）

  • VSEL引脚支持简单的动态电压调整(DVS)
  • 占空比：100%（低压差模式）
  • 内部同步整流器、补偿和软启动
  • 电流过载和热关断保护功能
  • 1 mm × 1.5 mm、6引脚小型WLCSP封装
  //www.chip100.com/