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MAX1954AEUB-TG077 PDF预览

MAX1954AEUB-TG077

更新时间： 2024-11-10 04:15:55
品牌 Logo 应用领域
美信 - MAXIM 开关
页数 文件大小 规格书
18页 349K
描述
Switching Controller

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中文翻译

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MAX1954AEUB-TG077 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete包装说明：,
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.32
模拟集成电路 - 其他类型：SWITCHING CONTROLLER峰值回流温度（摄氏度）：NOT SPECIFIED
处于峰值回流温度下的最长时间：NOT SPECIFIED

MAX1954AEUB-TG077 数据手册

 浏览型号MAX1954AEUB-TG077的Datasheet PDF文件第2页浏览型号MAX1954AEUB-TG077的Datasheet PDF文件第3页浏览型号MAX1954AEUB-TG077的Datasheet PDF文件第4页浏览型号MAX1954AEUB-TG077的Datasheet PDF文件第5页浏览型号MAX1954AEUB-TG077的Datasheet PDF文件第6页浏览型号MAX1954AEUB-TG077的Datasheet PDF文件第7页 
19-3154; Rev 1; 5/05  
Low-Cost, Current-Mode PWM Buck  
Controller with Foldback Current Limit  
General Description  
Features  
The MAX1954A synchronous current-mode, pulse-  
width modulation (PWM) buck controller is pin compati-  
ble with the popular MAX1954 and is suitable for  
applications where cost and size are critical.  
♦ Current-Mode Controller  
♦ Fixed-Frequency PWM  
♦ Foldback Current Limit  
The MAX1954A operates from an input voltage range of  
3.0V to 13.2V, independent of the IC supply. The output  
voltage is adjustable down to 0.8V. The IC operates at  
a fixed 300kHz switching frequency and provides up to  
25A of output current with efficiency up to 95%. This  
controller has excellent transient response resulting in  
smaller output capacitance.  
♦ Output Down to 0.8V with 1% FB Accuracy  
♦ 3.0V to 13.2V Input Voltage  
♦ 300kHz Switching Frequency  
♦ 25A Output-Current Capability  
♦ 93% Efficiency  
The MAX1954A features foldback current limiting that  
greatly reduces input current and component power  
dissipation during output overload or short-circuit  
conditions.  
♦ All-N-Channel-MOSFET Design for Low Cost  
♦ No Current-Sense Resistor Needed  
♦ Internal Digital Soft-Start  
The compensation and shutdown control (COMP) input,  
in addition to providing compensation to the error  
amplifier, can be pulled low to shut down the converter.  
An input undervoltage lockout is provided to ensure  
proper operation during power sags to prevent the  
external power MOSFETs from overheating. Internal  
digital soft-start is included to reduce inrush current  
and save an external capacitor.  
♦ Small 10-Pin µMAX Package  
®
The MAX1954A is available in a tiny 10-pin µMAX  
package to minimize PC board space.  
Applications  
Ordering Information  
Printers and Scanners  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
Graphic Cards and Video Cards  
PCs and Servers  
MAX1954AEUB  
MAX1954AEUB+  
10 µMAX  
10 µMAX  
+Denotes lead-free package.  
Microprocessor Cores  
Low-Voltage Distributed Power  
Telecom/Networks  
Pin Configuration  
TOP VIEW  
HSD  
COMP  
FB  
1
2
3
4
5
10 BST  
9
8
7
6
LX  
MAX1954A  
DH  
GND  
IN  
PGND  
DL  
µMAX  
µMAX is a registered trademark of Maxim Integrated Products, Inc.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...18

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