DC DC Cntrlr Single-OUT Sync Buck 2.95V to 20V Input 10Pin LFCSP EP T/R
Product Details
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.
### Features and Benefits
输出接口数 1
输出电压 0.6 V
供电电流 1.10 mA
开关频率 1 MHz
占空比 45 %
输入电压Max 20 V
输入电压Min 2.95 V
最大占空比 45 %
工作温度Max 125 ℃
工作温度Min -40 ℃
电源电压 3.25V ~ 20V
输入电压 2.95V ~ 20V
安装方式 Surface Mount
引脚数 10
封装 LFCSP-10
封装 LFCSP-10
工作温度 -40℃ ~ 125℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
ADP1870ACPZ-1.0-R7 ADI 亚德诺 | 当前型号 | 当前型号 |
ADP1871ACPZ-1.0-R7 亚德诺 | 完全替代 | ADP1870ACPZ-1.0-R7和ADP1871ACPZ-1.0-R7的区别 |
ADP1871ACPZ-0.3-R7 亚德诺 | 类似代替 | ADP1870ACPZ-1.0-R7和ADP1871ACPZ-0.3-R7的区别 |