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MAX5090B

更新时间： 2024-11-03 14:57:39
品牌 Logo 应用领域
亚德诺 - ADI DC-DC转换器
页数 文件大小 规格书
17页 2150K
描述
2A、76V、高效MAXPower、降压型DC-DC转换器

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中文翻译

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MAX5090B 数据手册

 浏览型号MAX5090B的Datasheet PDF文件第2页浏览型号MAX5090B的Datasheet PDF文件第3页浏览型号MAX5090B的Datasheet PDF文件第4页浏览型号MAX5090B的Datasheet PDF文件第5页浏览型号MAX5090B的Datasheet PDF文件第6页浏览型号MAX5090B的Datasheet PDF文件第7页 
EVALUATION KIT AVAILABLE  
MAX5090A/B/C  
2A, 76V, High-Efficiency MAXPower  
Step-Down DC-DC Converters  
General Description  
Features  
● Wide Input Voltage Range: 6.5V to 76V  
The MAX5090A/B/C easy-to-use, high-efficiency, high-  
voltage step-down DC-DC converters operate from an input  
voltage up to 76V, and consume only 310µA quiescent  
current at no load. This pulse-width-modulated (PWM)  
converter operates at a fixed 127kHz switching frequency at  
heavy loads, and automatically switches to pulse-skipping  
mode to provide low quiescent current and high efficiency  
at light loads. The MAX5090 includes internal frequency  
compensation simplifying circuit implementation. The  
device can also be synchronized with external system clock  
frequency in a noise-sensitive application. The MAX5090  
uses an internal low on-resistance and a high-voltage DMOS  
transistor to obtain high efficiency and reduce overall system  
cost. This device includes undervoltage lockout, cycle-  
by-cycle current limit, hiccup-mode output short-circuit  
protection, and overtemperature shutdown.  
● Fixed (3.3V, 5V) and Adjustable (1.265V to 11V)  
Output-Voltage Versions  
● 2A Output Current  
● Efficiency Up to 92%  
● Internal 0.26Ω High-Side DMOS FET  
● 310µA Quiescent Current at No Load  
● 19µA Shutdown Current  
● Internal Frequency Compensation  
● Fixed 127kHz Switching Frequency  
● External Frequency Synchronization  
● Thermal Shutdown and Short-Circuit Current Limit  
● -40°C to +125°C Automotive Temperature Range  
● 6-Pin (5mm x 5mm) Thin QFN Package  
● Capable of Dissipating 2.67W at +70°C  
The MAX5090 delivers up to 2A output current. External  
shutdown is included, featuring 19µA (typ) shutdown  
current. The MAX5090A/MAX5090B versions have fixed  
output voltages of 3.3V and 5V, respectively, while the  
MAX5090C features an adjustable 1.265V to 11V output  
voltage.  
Ordering Information  
OUTPUT  
VOLTAGE  
(V)  
TEMP  
PIN-  
PACKAGE  
PART  
RANGE  
The MAX5090 is available in a space-saving 16-pin  
thin QFN package (5mm x 5mm) and operates over the  
automotive temperature range (-40°C to +125°C).  
MAX5090AATE+ -40°C to +125°C 16 TQFN-EP*  
3.3  
MAX5090AATE -40°C to +125°C 16 TQFN-EP*  
MAX5090BATE+ -40°C to +125°C 16 TQFN-EP*  
MAX5090BATE -40°C to +125°C 16 TQFN-EP*  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
3.3  
5.0  
5.0  
Applications  
● Industrial  
● Distributed Power  
Ordering Information continued at end of data sheet.  
Typical Operating Circuit  
Pin Configuration  
V
IN  
7.5V TO 76V  
TOP VIEW  
R
IN  
10Ω  
12  
11  
10  
9
C
IN  
68µF  
C
BYPASS  
0.47µF  
V
OUT  
EP  
FB  
8
7
6
5
DRAIN 13  
DRAIN 14  
N.C. 15  
100µH  
5V/2A  
V
DRAIN  
IN  
LX  
SS  
ON/OFF  
MAX5090B  
C
C
BST  
0.22µF  
OUT  
100µF  
D1  
PDS5100H  
MA5090  
SYNC  
VD  
BST  
FB  
16  
N.C.  
SS  
SYNC  
SGND  
C
SS  
0.047µF  
VD  
1
2
3
4
PGND  
3.3µF  
TQFN  
19-3872; Rev 1; 9/14  
1234567...17

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MAX5090BATE+ MAXIM

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MAX5090BATE+T MAXIM

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 		Switching Controller, Voltage-mode, 5A, 150kHz Switching Freq-Max, 5 X 5 MM, 0.8 MM HEIGHT
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 		2A、76V、高效MAXPower、降压型DC-DC转换器
MAX5090CATE MAXIM

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 		2A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converters
MAX5090CATE/GG8 MAXIM

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MAX5090CATE/V+ MAXIM

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 		Switching Controller
MAX5090CATE/V+T MAXIM

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 		Switching Controller
MAX5090CATE+ MAXIM

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 		2A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converters
MAX5090CATE+T MAXIM

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 		Switching Controller, Voltage-mode, 5A, 150kHz Switching Freq-Max, 5 X 5 MM, 0.8 MM HEIGHT

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