降压型 2.75V~20V 600kHz
Product Details
The ADP1872/ADP1873 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 current-sense gain, current-control scheme. In addition, these devices offer optimum performance at low duty cycles by utilizing valley current-mode control architecture. This allows the ADP1872/ ADP1873 to drive all N-channel power stages to regulate output voltages as low as 0.6 V.
The ADP1873 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 ADP1873 section for more information.
Available in three frequency options 300 kHz, 600 kHz, and 1.0 MHz, plus the PSM option, the ADP1872/ADP1873 are well suited for a wide range of applications. These ICs not only operate from a 2.75 V to 5.5 V bias supply, but also can accept a power input as high as 20 V.
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 pre-charged output. The low-side current-sense, current-gain scheme and integration of a boost diode, along with the PSM/forced pulse-width modulation PWM option, reduce the external part count and improve efficiency.
The ADP1872/ADP1873 operate over the −40°C to +125°C junction temperature range and are available in a 10-lead MSOP.
**Applications**
* Telecom and networking systems
* Mid to High End servers
* Set-top boxes
* DSP core power supplies
### Features and Benefits
2.75 V to 5.5 V
频率 600 kHz
电源电压DC 2.75V min
输出接口数 1
输入电压DC 13.0 V
输出电压 0.6 V
输出电流 25 A
供电电流 70.0 mA
开关频率 600 kHz
占空比 65 %
输入电压Max 20 V
输入电压Min 2.75 V
最大占空比 0.65
工作温度Max 125 ℃
工作温度Min -40 ℃
电源电压 2.75V ~ 20V
电源电压Max 20 V
电源电压Min 2.75 V
输入电压 13 V
安装方式 Surface Mount
引脚数 10
封装 MSOP-10
封装 MSOP-10
工作温度 -40℃ ~ 125℃
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 |
---|---|---|
ADP1872ARMZ-0.6-R7 ADI 亚德诺 | 当前型号 | 当前型号 |
ADP1882ARMZ-1.0-R7 亚德诺 | 类似代替 | ADP1872ARMZ-0.6-R7和ADP1882ARMZ-1.0-R7的区别 |
ADP1883ARMZ-0.6-R7 亚德诺 | 类似代替 | ADP1872ARMZ-0.6-R7和ADP1883ARMZ-0.6-R7的区别 |