adp2441主要特性:
wide input voltage range of 4.5 v to 36 v
low minimum on time of 50 ns
maximum load current of 1 a
high efficiency of up to 94%
adjustable output down to 0.6 v
±1% output voltage accuracy
adjustable switching frequency of 300 khz to 1 mhz
pulse skip mode at light load for power saving
precision enable input pin
open-drain power good
external soft start with tracking
overcurrent-limit protection
shutdown current of less than 15 μa
uvlo and thermal shutdown
12-lead, 3 mm × 3 mm lfcsp package
adp2441应用:
point of load applications
distributed power systems
industrial control supplies
standard rail conversion to 24 v/12 v/5 v/3.3 v 
图.adp2441方框图
图.adp2441典型应用电路图(1): vin = 24 v ± 10%, vout = 5 v, fsw = 700 khz 
图.adp2441典型应用电路图(2): vin = 24 v ± 10%, vout = 12 v, fsw = 600 khz 
图.adp2441典型应用电路图(3): vin = 12 v ± 10%, vout = 5 v, fsw = 500 khz 
图.adp2441典型应用电路图(4): vin = 36 v ± 10%, vout = 3.3 v, fsw = 300 khz
adp2441评估板主要特性:
full-featured evaluation board for the adp2441
configurable synchronous step down dc-dc switching regulator
operating voltage range of board: vin = 6 v to 36 v
output voltage is set to 5 v or can be adjusted
maximum load 1 a
switching frequency set to 500 khz or adjustable switching frequency of 300 khz to 1 mhz
power saving mode at light load
precision enable input pin
current limit protection
power good output
external soft start set to 6 ms or external tracking available
board size: 53 mm × 53 mm
图.adp2441评估板外形图
图.adp2441评估板电路图
adp2441评估板材料清单:
图.adp2441评估板pcb元件布局图
adi 公司的adp2441是36v /1a同步降压dc/dc电源稳压器,负载电流高达1a,输入电压4.5v-36v,输出电压从0.6v到0.9vxvin,精度±1%,开关频率从300 khz到1 mhz,效率高达94%,关断电流小于15ua,主要用在pol,分布式电源系统,工业控制电源和dc转换器.本文介绍了adp2441主要特性,方框图,多种典型应用电路以及adp2441评估板主要特性,电路图,材料清单和pcb元件布局图.
