ANALOG DEVICES ADP1870ARMZ-0.3-R7 直流/直流控制器, 电流模式, 2.95V至20V, 1路输出, 同步降压, 300kHz, MSOP-10
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
电源电压DC 2.95V min
输出接口数 1
输出电压 0.6 V
输出电流 25 A
供电电流 1.10 mA
针脚数 10
开关频率 300 kHz
占空比 84 %
输入电压Max 20 V
输入电压Min 2.95 V
最大占空比 0.84
工作温度Max 125 ℃
工作温度Min -40 ℃
电源电压 2.95V ~ 20V
电源电压Max 20 V
电源电压Min 2.95 V
输入电压 2.95V ~ 20V
安装方式 Surface Mount
引脚数 10
封装 MSOP-10
长度 3 mm
宽度 3 mm
高度 0.85 mm
封装 MSOP-10
工作温度 -40℃ ~ 125℃ TJ
产品生命周期 Active
包装方式 Cut Tape CT
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC标准 No SVHC
REACH SVHC版本 2015/12/17
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
ADP1870ARMZ-0.3-R7 ADI 亚德诺 | 当前型号 | 当前型号 |
ADP1870ARMZ-0.6-R7 亚德诺 | 类似代替 | ADP1870ARMZ-0.3-R7和ADP1870ARMZ-0.6-R7的区别 |