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MAX767

更新时间： 2024-09-20 22:55:11
品牌 Logo 应用领域
美信 - MAXIM 控制器
页数 文件大小 规格书
20页 193K
描述
5V-to-3.3V, Synchronous, Step-Down Power-Supply Controller

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中文翻译

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MAX767 数据手册

 浏览型号MAX767的Datasheet PDF文件第2页浏览型号MAX767的Datasheet PDF文件第3页浏览型号MAX767的Datasheet PDF文件第4页浏览型号MAX767的Datasheet PDF文件第5页浏览型号MAX767的Datasheet PDF文件第6页浏览型号MAX767的Datasheet PDF文件第7页 
19-0224; Rev 2; 8/94  
5 V-t o -3 .3 V, S yn c h ro n o u s , S t e p -Do w n  
P o w e r-S u p p ly Co n t ro lle r  
MAX67  
_______________Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
♦ >90% Efficiency  
♦ 700µA Quiescent Supply Current  
♦ 120µA Standby Supply Current  
♦ 4.5V-to-5.5V Input Range  
♦ Low-Cost Application Circuit  
♦ All N-Channel Switches  
♦ Small External Components  
♦ Tiny Shrink-Small-Outline Package (SSOP)  
The MAX767 is a high-efficiency, synchronous buck  
controller IC dedicated to converting a fixed 5V supply  
into a tightly regulated 3.3V output. Two key features set  
this device apart from similar, low-voltage step-down  
switching regulators: high operating frequency and all  
N-channel construction in the application circuit. The  
300kHz operating frequency results in very small, low-  
cost external surface-mount components.  
The inductor, at 3.3µH for 5A, is physically at least five  
times smaller than inductors found in competing solu-  
tions. All N-channel construction and synchronous rectifi-  
cation result in reduced cost and highest efficiency.  
Efficiency exceeds 90% over a wide range of loading,  
eliminating the need for heatsinking. Output capacitance  
requirements are low, reducing board space and cost.  
♦ Predesigned Applications:  
Standard 5V to 3.3V DC-DC Converters up to 10A  
High-Accuracy Pentium P54C VR-Spec Supply  
♦ Fixed Output Voltages Available:  
3.3V (Standard)  
3.45V (High-Speed Pentium™)  
3.6V (PowerPC™)  
The MAX767 is a monolithic BiCMOS IC available in  
20-pin SSOP packages. For other fixed output voltages  
and package options, please consult the factory.  
______________Ord e rin g In fo rm a t io n  
PIN-  
PACKAGE  
REF.  
TOL.  
________________________Ap p lic a t io n s  
PART  
TEMP. RANGE  
V
OUT  
Local 5V-to-3.3V DC-DC Conversion  
Microprocessor Daughterboards  
Power Supplies up to 10A or More  
MAX767CAP  
0°C to +70°C  
20 SSOP  
20 SSOP  
20 SSOP  
20 SSOP  
Dice*  
±1.8% 3.3V  
±1.8% 3.45V  
±1.8% 3.6V  
±1.2% 3.3V  
MAX767RCAP 0°C to +70°C  
MAX767SCAP 0°C to +70°C  
MAX767TCAP 0°C to +70°C  
MAX767C/D  
0°C to +70°C  
–
–
Ordering Information continued at end of data sheet.  
* Contact factory for dice specifications.  
________Typ ic a l Ap p lic a t io n Circ u it  
INPUT  
4.5V TO 5.5V  
__________________P in Co n fig u ra t io n  
TOP VIEW  
V
CC  
ON  
BST  
DH  
CS  
SS  
FB  
1
2
3
4
5
6
7
8
9
OUTPUT  
3.3V  
AT 5A  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
3.3µH  
DH  
LX  
BST  
DL  
ON  
LX  
MAX767  
GND  
MAX767  
DL  
GND  
GND  
GND  
REF  
PGND  
V
CC  
CS  
FB  
V
CC  
PGND  
N.C.  
SYNC  
REF  
GND  
V
CC 10  
GND  
SSOP  
™ Pentium is a trademark of Intel. PowerPC is a trademark of IBM.  
________________________________________________________________ Maxim Integrated Products  
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .  
1234567...20

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