同步电流模式恒定导通时间, PWM降压控制器 Synchronous Current-Mode with Constant On-Time,PWM Buck Controller
Product Details
The ADP1882/ADP1883 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-limit, current-control scheme. In addition, these devices offer optimum performance at low duty cycles by using valley current-mode control architecture. This allows the ADP1882/ADP1883 to drive all N-channel power stages to regulate output voltages as low as 0.8 V.
The ADP1883 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 ADP1883 section for more information.
Available in three frequency options 300 kHz, 600 kHz, and 1.0 MHz, plus the PSM option, the ADP1882/ADP1883 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 they 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 ADP1882/ADP1883 operate over the -40°C to +125°C junction temperature range and are available in a 10-lead MSOP.
### Features and Benefits
2.75 V to 5.5 V
电源电压DC 2.75V min
输出接口数 1
输出电压 17.0 V
输出电流 25 A
供电电流 70.0 mA
上升时间 25 ns
开关频率 300 kHz
占空比 84 %
最大占空比 0.84
下降时间 16 ns
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 2.9V ~ 20V
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 2013/06/20
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
ADP1883ARMZ-0.3-R7 ADI 亚德诺 | 当前型号 | 当前型号 |
ADP1882ARMZ-0.6-R7 亚德诺 | 完全替代 | ADP1883ARMZ-0.3-R7和ADP1882ARMZ-0.6-R7的区别 |
ADP1873ARMZ-0.3-R7 亚德诺 | 完全替代 | ADP1883ARMZ-0.3-R7和ADP1873ARMZ-0.3-R7的区别 |
ADP1872ARMZ-0.6-R7 亚德诺 | 类似代替 | ADP1883ARMZ-0.3-R7和ADP1872ARMZ-0.6-R7的区别 |