ADP1876是AD公司的一款开关稳压器产品，ADP1876是600kHz双通道输出同步降压PWM控制器加线性调节器，本站介绍了ADP1876的封装应用图解、特点和优点、功能等，并给出了与ADP1876相关的AD元器件型号供参考。
ADP1876 - 600kHz双通道输出同步降压PWM控制器加线性调节器 - 开关稳压器 - 线性稳压器 - Analog Devices, LLC
ADP1876是一款双通道输出DCDC同步降压控制器，使用600 kHz固定频率工作，集成驱动器可驱动N沟道功率MOSFET。它通过电流模式改善瞬态响应，并使用谷值电流检测以增强抗扰度。两个PWM输出相移180o，可降低输入电流纹波和所需的输入电容。
ADP1876内置一个低压差电压调节器(LDO)，具有1.5 V的固定输出电压，最大负载为150 mA。
它具有高速、高峰值电流驱动及死区优化功能，以实现高能效功率转换。
其它灵活的功能包括外部可编程环路补偿、软启动，电流限值和电流检测增益全部可使用外部元件进行编程。ADP1876集成了升压二极管和电源良好指示，具有欠压闭锁、过流/短路/过温保护等特性。工作温度范围为-40℃至+85°C时，输出电压精度为±0.85%；工作温度范围为-40℃至125℃结温范围时，输出电压精度为±1.5%。该器件采用2.75 V至20 V电源供电，工作温度范围为?40℃至+125℃结温范围，采用32引脚5 mm × 5 mm LFCSP封装。
应用
The ADP1876 is a dual-channel, step-down switching controller with integrated drivers for external N-channel synchronous power MOSFETs. The two PWM outputs are phase shifted 180°, which reduces the input rms ripple current, thus minimizing the required input capacitance.
In addition, boost diodes are integrated into the ADP1876, which lowers the overall system cost and component count. The ADP1876 is configured to operate in forced PWM continuous conduction mode.
The ADP1876 includes externally adjustable soft start, output overvoltage protection, externally adjustable current limit, power good and tracking function for Channel 1. The ADP1876 provides an output voltage accuracy of ±0.85% for a −40°C to +85°C junction temperature and ±1.5% for a −40°C to +125°C junction temperature. This controller can be powered from a 2.75 V to 20 V supply and is available in a 32-lead, 5 mm × 5 mm lead frame chip scale package (LFCSP).
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