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MAX1745

更新时间： 2024-11-15 14:57:55
品牌 Logo 应用领域
亚德诺 - ADI 控制器高压
页数 文件大小 规格书
15页 1431K
描述
高压、降压型DC-DC控制器，μMAX封装

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MAX1745 数据手册

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Evaluation Kit  
Available  
Design  
Resources  
Tools  
and Models  
Support  
Click here to ask an associate for production status of specific part numbers.  
High-Voltage, Step-Down DC-DC  
Controllers in μMAX  
MAX1744/MAX1745  
General Description  
Features  
The MAX1744/MAX1745 are step-down DC-DC control-  
lers capable of handling up to 36V inputs. These parts use  
a proprietary current-limited control scheme for excellent  
light- and full-load efficiency, while their 330kHz (max)  
switching frequency permits small external components  
for space-critical applications. Operation to 100% duty  
cycle permits the lowest possible dropout voltage.  
● High-Voltage Operation (Up to 36V IN)  
● Efficiency > 90%  
● Output Power Capability Exceeds 50W  
● 10-Pin μMax Package  
● Low-Dropout Voltage  
● 100% (max) Duty Cycle  
The MAX1744 contains an internal feedback network that  
provides a pin-selectable output voltage of either 3.3V or  
5V. The MAX1745 uses an external feedback network  
to generate an adjustable output voltage between 1.25V  
and 18V.  
● 90μA Quiescent Current  
● 4μA Shutdown Current  
● Up to 330kHz Switching Frequency  
● Output Voltage  
• 5V or 3.3V (MAX1744)  
• Adjustable 1.25V to 18V (MAX1745)  
● Current-Limited Control Scheme  
The MAX1744/MAX1745 are available in a space-saving  
®
10-pin μMAX package.  
Applications  
● Automotive Electronics  
● Telecom Systems  
● Wall-Cube-Powered Devices  
● Industrial Control Systems  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +125°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +125°C  
-40°C to +85°C  
PIN-PACKAGE  
10 μMAX  
10 μMAX  
10 μMAX  
10 μMAX  
10 μMAX  
10 μMAX  
MAX1744EUB+  
MAX1744AUB+  
MAX1744EUB/V+  
MAX1745EUB+  
MAX1745AUB+  
MAX1745EUB/V+  
®
®
● Firewire /IEEE 1394  
μMAX is a registered trademark of Maxim Integrated Products,  
Inc.  
Firewire is a registered trademark of Apple, Inc.  
IEEE is a registered service mark of the Institute of Electrical  
and Electronics Engineers, Inc.  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
/V Denotes an automotive qualified part.  
Typical Operating Circuit  
Pin Configuration  
IN  
TOP VIEW  
4.5V TO 36V  
+
GND  
VL  
1
2
3
4
5
10 IN  
IN VH  
P
EXT  
ON  
5V  
9
8
7
6
EXT  
SHDN  
3/5  
OFF  
3.3V  
MAX1744  
MAX1745  
REF  
VH  
MAX1744  
3/5 (FB)  
SHDN  
CS  
VL  
OUT  
CS  
REF  
OUT  
OUT  
3.3V  
OR 5V  
GND  
µMAX  
( ) ARE FOR MAX1745 ONLY.  
19-1776; Rev 5; 11/22  
©
2022 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.  
One Analog Way, Wilmington, MA 01887 U.S.A. Tel: 781.329.4700 © 2021 Analog Devices, Inc. All rights reserved.  
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