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MAX763AEPA

更新时间: 2024-02-27 03:24:17
品牌 Logo 应用领域
美信 - MAXIM 转换器
页数 文件大小 规格书
12页 136K
描述
3.3V, Step-Down, Current-Mode PWM DC-DC Converters

MAX763AEPA 技术参数

是否无铅:含铅生命周期:Active
零件包装代码:DIP包装说明:CERAMIC, DIP-8
针数:8Reach Compliance Code:unknown
风险等级:5.19Is Samacsys:N
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:11 V
最小输入电压:3.3 V标称输入电压:5 V
JESD-30 代码:R-GDIP-T8JESD-609代码:e0
湿度敏感等级:1功能数量:1
端子数量:8最高工作温度:125 °C
最低工作温度:-55 °C最大输出电流:2 A
标称输出电压:3.3 V封装主体材料:CERAMIC, GLASS-SEALED
封装代码:DIP封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):245
认证状态:COMMERCIAL座面最大高度:5.08 mm
表面贴装:NO切换器配置:BUCK
最大切换频率:212.5 kHz技术:CMOS
温度等级:MILITARY端子面层:TIN LEAD
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.62 mmBase Number Matches:1

MAX763AEPA 数据手册

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19-0190; Rev 0; 9/93  
3 .3 V, S t e p -Do w n ,  
Cu rre n t -Mo d e P WM DC-DC Co n ve rt e rs  
48/MX763A  
__________________Ge n e ra l De s c rip t io n  
________________________________Fe a t u re s  
The MAX748A/MAX763A are 3.3V-output CMOS, step-  
d own s witc hing re g ula tors . The MAX748A a c c e p ts  
inputs from 3.3V to 16V and delivers up to 500mA. The  
MAX763A accepts inputs between 3.3V and 11V and  
delivers up to 500mA. Typical efficiencies are 85% to  
90%. Quiescent supply current is 1.4mA (MAX763A),  
and only 0.2µA in shutdown.  
Up to 500mA Load Currents  
Guaranteed 159kHz to 219.5kHz Current-Mode  
PWM  
85% to 90% Efficiencies  
1.7mA Quiescent Current (MAX748A)  
1.4mA Quiescent Current (MAX763A)  
Pulse-width-modulation (PWM) current-mode control pro-  
vides precise output regulation and excellent transient  
responses. Output voltage accuracy is guaranteed to be  
± 5% ove r line , loa d , a nd te mp e ra ture va ria tions .  
Fixed-frequency switching allows easy filtering of output  
ripple and noise, as well as the use of small external  
components. A 22µH inductor works in most applica-  
tions, so no magnetics design is necessary.  
0.2µA Shutdown Supply Current  
22µH Preselected Inductor Value;  
No Component Design Required  
Overcurrent, Soft-Start, and Undervoltage  
Lockout Protection  
Cycle-by-Cycle Current Limiting  
8-Pin DIP/SO Packages (MAX763A)  
The MAX748A/MAX763A also feature cycle-by-cycle cur-  
rent limiting, overcurrent limiting, undervoltage lockout,  
and programmable soft-start protection. The MAX748A  
is available in 8-pin DIP and 16-pin wide SO packages;  
the MAX763A comes in 8-pin DIP and SO packages.  
_________________Ord e rin g In fo rm a t io n  
PART  
TEMP. RANGE  
0°C to +70°C  
PIN-PACKAGE  
8 Plastic DIP  
16 Wide SO  
Dice*  
MAX748ACPA  
MAX748ACWE  
MAX748AC/D  
MAX748AEPA  
MAX748AEWE  
MAX748AMJA  
0°C to +70°C  
___________________________Ap p lic a t io n s  
5V-to-3.3V Converters  
0°C to +70°C  
-40°C to +85°C  
-40°C to +85°C  
-55°C to +125°C  
8 Plastic DIP  
16 Wide SO  
8 CERDIP  
Cellular Phones  
Portable Instruments  
Hand-Held Computers  
Ordering Information continued on last page.  
Computer Peripherals  
* Contact factory for dice specifications.  
____________Typ ic a l Op e ra t in g Circ u it  
____________________P in Co n fig u ra t io n s  
INPUT  
3.3V TO 16V  
TOP VIEW  
OUTPUT  
3.3V  
22µH  
V+  
LX  
MAX748A  
SHDN  
REF  
SS  
V+  
1
2
3
4
8
7
6
5
LX  
ON/OFF  
SHDN  
OUT  
CC  
MAX748A  
MAX763A  
GND  
OUT  
100µF  
CC  
REF  
SS  
GND  
DIP  
Pin Configurations continued on last page.  
_______________________________________________________________________ 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 .  

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