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MAX1643C/D-T

更新时间： 2024-11-09 19:57:31
品牌 Logo 应用领域
美信 - MAXIM 开关
页数 文件大小 规格书
12页 130K
描述
Switching Regulator, 1A

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MAX1643C/D-T 技术参数

生命周期：ActiveReach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.75其他特性：IT ALSO HAS CONTROL TECHNIQUE OF PFM, ALSO OPERATES IN ADJUSTABLE MODE FROM 2 TO 5.2V
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制技术：PULSE WIDTH MODULATION
最大输入电压：1.65 V最小输入电压：0.7 V
标称输入电压：1.3 VJESD-30 代码：X-XUUC-N
功能数量：1最高工作温度：70 °C
最低工作温度：最大输出电流：1 A
标称输出电压：3.3 V封装主体材料：UNSPECIFIED
封装代码：DIE封装形状：UNSPECIFIED
封装形式：UNCASED CHIP表面贴装：YES
切换器配置：BOOST温度等级：COMMERCIAL
端子形式：NO LEAD端子位置：UPPER
Base Number Matches：1

MAX1643C/D-T 数据手册

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19-1183; Rev 0; 6/97  
Hig h -Effic ie n c y, S t e p -Up  
DC-DC Co n ve rt e rs fo r 1 V In p u t s  
2/MAX1643  
_______________Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
♦ Built-In Synchronous Rectifier  
The MAX1642/MAX1643 are high-efficiency, low-voltage,  
step-up DC-DC converters intended for devices pow-  
ered by a single alkaline cell. They feature low quies-  
cent supply currents and are supplied in the ultra-small  
µMAX package, which is only 1.1mm high. The guaran-  
teed start-up voltage is 0.88V.  
♦ 0.88V Guaranteed Start-Up  
♦ Ultra-Small µMAX Package: 1.1mm High  
♦ 83% Efficiency  
Ea c h d e vic e c ons is ts of a n inte rna l 1Ω, N-c ha nne l  
MOSFET power switch; a built-in synchronous rectifier  
that acts as the catch diode; an oscillator; a reference;  
and pulse-frequency-modulation (PFM) control circuitry.  
Both devices feature an independent undervoltage  
comparator (PFI/PFO). The MAX1642 also includes a  
2µA logic-controlled shutdown mode. The MAX1643  
offers a dedicated low-battery detector (BATTLO) in  
lieu of shutdown.  
♦ 4µA Quiescent Supply Current into BATT Pin  
♦ 2µA Logic-Controlled Shutdown (MAX1642)  
♦ Two Undervoltage Detectors (MAX1643)  
♦ 2V to 5.2V Output Range  
♦ 20mA Output Current at 1.2V Input  
♦ Reverse Battery Protection  
The output voltage for each device is preset to 3.3V  
±4%, or can be adjusted from +2V to +5.2V using only  
two resistors.  
______________Ord e rin g In fo rm a t io n  
PART  
TEMP. RANGE  
0°C to +70°C  
-40°C to +85°C  
0°C to +70°C  
-40°C to +85°C  
PIN-PACKAGE  
Dice*  
MAX1642C/D  
MAX1642EUA  
MAX1643C/D  
MAX1643EUA  
8 µMAX  
Dice*  
________________________Ap p lic a t io n s  
8 µMAX  
Pagers  
*Dice are tested at T = +25°C.  
A
Remote Controls  
Note: To order these devices shipped in tape and reel, add a -T  
to the part number.  
Pointing Devices  
Personal Medical Monitors  
Single-Cell Battery-Powered Devices  
_________________P in Co n fig u ra t io n s  
TOP VIEW  
1
2
3
4
8
7
6
5
OUT  
LX  
BATT  
PFI  
__________Typ ic a l Op e ra t in g Circ u it  
MAX1642  
µMAX  
GND  
FB  
PFO  
SHDN  
INPUT  
0.88V TO 1.65V  
OUTPUT  
3.3V  
100µH  
OUT  
LX  
22µF  
22µF  
MAX1642  
BATT  
1
2
3
4
8
7
6
5
OUT  
LX  
BATT  
PFI  
ON  
SHDN  
OFF  
MAX1643  
µMAX  
PFI  
GND  
PFO  
FB  
LOW-BATTERY  
DETECTOR INPUT  
LOW-BATTERY  
DETECTOR OUTPUT  
GND  
FB  
BATTLO  
PFO  
________________________________________________________________ Maxim Integrated Products  
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.  
For small orders, phone 408-737-7600 ext. 3468.  
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