ADP2441是AD公司的一款开关稳压器产品，ADP2441是36 V、1 A同步降压DC-DC调节器，本站介绍了ADP2441的封装应用图解、特点和优点、功能等，并给出了与ADP2441相关的AD元器件型号供参考。
ADP2441 - 36 V、1 A同步降压DC-DC调节器 - 开关稳压器 - 电源管理 - Analog Devices, LLC
ADP2441是恒定频率、采用电流模式控制的同步降压dc-dc调节器，可驱动最高1 A的负载，并具有出色的线路和负载调节特性。它可在宽输入电压范围内（4.5 V至36 V）工作，是调整多种类型输入源功率的理想选择。另外，它还具有非常低的最短导通时间(50 ns)，因此适合那些需要非常高降压比的应用。
输出电压可在0.6 V至0.9 V × VIN之间调节。该器件同时针对高端和低端设备集成低电阻N沟道MOSFET，可实现高效率。
开关频率可用外部电阻在300 kHz至1 MHz范围内调节。另外，ADP2441还有一个精确的电源良好(PGOOD)开漏输出信号。
在负载较低的情况下，调节器通过跳过脉冲并降低开关损耗工作在脉冲跳跃模式下，可提升能效。此外，在中负载至高负载情况下，调节器工作在固定频率脉宽调制(PWM)模式以降低电磁干扰(EMI)。
ADP2441使用打嗝模式保护IC不受短路或输出端过流情况影响。外部可编程软启动可限制多种负载电容启动时的浪涌电流。其它重要特性包括跟踪、输入欠压闭锁(UVLO)、热关断(TSD)和精密使能(EN)，亦可用于逻辑电平关断输入。
ADP2441采用3 mm × 3 mm、12引脚LFCSP封装，额定工作温度范围为?40°C至+125℃结温范围。
应用
The ADP2441 evaluation board is a complete, dc-to-dc switch-ing regulator design based on the ADP2441, a configurable, 1 A, synchronous step-down, dc-to-dc regulator.
The ADP2441 is a synchronous, step-down dc-to-dc switching regulator that uses a current mode pulse-width modulation (PWM) control scheme at medium-to-heavy load currents for high efficiency and smoothly transitions to a pulse skip mode at light loads to conserve power. The power switch and synchronous rectifier are integrated for minimal external part count and high efficiency. The ADP2441 is optimized for operation with small ferrite core inductors and ceramic capacitors to deliver the maximum output power per square millimeter of the PCB board area.
The ADP2441-EVALZ is available with 5 V at 1 A output, switching frequency set to 500 kHz. If needed, the ADP2441 evaluation board configuration can be modified by changing the values of the appropriate passive components.
Complete specifications for the ADP2441 device can be found in the ADP2441 data sheet, which is available from Analog Devices, Inc., and should be consulted in conjunction with this user guide when using the evaluation board.
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