华强商城 被动器件(电容/电阻/电感) BOM配单 原厂专区 PCB制板 积分兑换
0
首页>IC索引

ADP1871

Synchronous Buck Controller with Constant On-Time, Valley Current Mode, and Power Save Mode

ADP1871产品信息:

概览

优势和特点

  • Power input voltage range: 2.95 V to 20 V
  • On-board bias regulator
  • Minimum output voltage: 0.6 V
  • 0.6 V reference voltage with ±1.0% accuracy
  • Supports all N-channel MOSFET power stages
  • Available in 300 kHz, 600 KHz, and 1.0 MHz options
  • No current-sense resistor required
  • Power saving mode (PSM) for light loads
  • Resistor-programmable current-sense gain
  • Thermal overload protection
  • Short-circuit protection
  • Precision enable input
  • Integrated bootstrap diode for high-side drive
  • Starts into a precharged load
  • Small, 10-lead MSOP package

产品详情

The ADP1870/ADP1871 are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current-limit protection by using a constant on-time, pseudo-fixed frequency with a programmable currentlimit, current-control scheme. In addition, these devices offer optimum performance at low duty cycles by utilizing valley current-mode control architecture. This allows the ADP1870/ ADP1871 to drive all N-channel power stages to regulate output voltages as low as 0.6 V.

The ADP1871 is the power saving mode (PSM) version of the device and is capable of pulse skipping to maintain output regulation while achieving improved system efficiency at light loads (see the Power Saving Mode (PSM) Version (ADP1871) section for more information).

Available in three frequency options (300 kHz, 600 kHz, and 1.0 MHz, plus the PSM option), the ADP1870/ADP1871 are well suited for a wide range of applications that require a single-input power supply range from 2.95 V to 20 V. Low voltage biasing is supplied via a 5 V internal LDO.

In addition, an internally fixed soft start period is included to limit input in-rush current from the input supply during startup and to provide reverse current protection during soft start for a precharged output. The low-side current-sense, current-gain scheme and integration of a boost diode, along with the PSM/forced pulsewidth modulation (PWM) option, reduce the external part count and improve efficiency.

The ADP1870/ADP1871 operate over the -40°C to +125°C junction temperature range and are available in 10-lead MSOP package.

ADP1871数据手册:

ADI公司扩充恒定导通时间、同步降压型控制器产品线

ADI公司扩充恒定导通时间、同步降压型控制器产品线--ADI公司的ADP1870和ADP1871降压型控制器采用恒定导通时间和谷值电流模式技术驱动所有N沟道功率级电路,可以将输出电压稳定至最低0.6V北京,全球领先的高性能信号处理解决方案供应商,最新推出两款电流模式同步降压型控制器(http:///zh/switching_controllers)ADP1870和ADP1871

同步降压型控制器(ADI

ADI 公司的 ADP1870和 ADP1871降压型控制器采用恒定导通时间和谷值电流模式技术驱动所有 N 沟道功率级电路,可以将输出电压稳定至最低0.6VAnalog Devices推出两款电流模式同步降压型控制器ADP1870和 ADP1871

ADP187x

analog devices最新推出两款电流模式同步降压型控制器adp1870 和 adp1871。adp1870和 adp1871采用谷值电流模式控制架构,因而还能在低占空比情况下提供增强的性能。这两种器

恒定导通时间、同步降压型控制器

恒定导通时间、同步降压型控制器AnalogDevices,Inc.最新推出两款电流模式同步降压型控制器ADP1870和ADP1871。ADP1870和ADP1871采用谷值电流模式控制架构,因而还能在低占空比情况下提供增强的性能。这两种器件都有三种频率选项,即

ADI推出电流模式同步降压型控制器ADP1870和ADP18

ADI推出电流模式同步降压型控制器ADP1870和ADP1871ADI最新推出两款电流模式同步降压型控制器ADP1870和ADP1871。ADP1870和ADP1871采用谷值电流模式控制架构,因而还能在低占空比情况下提供增强的性能。这两种器件都有三种频率选项,

ADI推出电流模式同步降压型控制器ADP187x

ADI推出电流模式同步降压型控制器ADP187xAnalogDevices最新推出两款电流模式同步降压型控制器ADP1870和ADP1871。ADP1870和ADP1871采用谷值电流模式控制架构,因而还能在低占空比情况下提供增强的性能。这两种器件都有三种频率选项

ADI电流模式同步降压型控制器ADP1870和ADP1871

,全球领先的高性能信号处理解决方案供应商,最新推出两款电流模式同步降压型控制器 ADP1870和 ADP1871

相关型号:

AS ACT85610 ACT4921 ACT4911 ACT4910
ACT8945A ACT8892 ACT88760 ACT8870 ACT8865
ACT8849 ACT8847 ACT8846 ACT88430 ACT8840
ACT88329 ACT88327 ACT88326 ACT88325 ACT88321
按首字母检索