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MAX8845ZEVKIT

更新时间： 2024-11-10 02:52:07
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
11页 154K
描述
Programmable Top-Off Current Threshold

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MAX8845ZEVKIT 数据手册

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19-4405; Rev 0; 12/08  
MAX8845Z Evaluation Kit  
Evluates:Z/MAX845Y  
General Description  
Features  
The MAX8845Z evaluation kit (EV kit) is a fully assem-  
bled and tested PCB for evaluating the MAX8845Z/  
MAX8845Y 28V linear Li+ battery chargers.  
o CCCV, Thermally Regulated Linear Single-Cell Li+  
Battery Charger  
o No External MOSFET, Reverse-Blocking Diode, or  
The MAX8845Z EV kit features an overvoltage-protect-  
ed LDO output (SAFEOUT) for low-voltage-rated USB  
or charger inputs in the system, and a battery pack  
detection circuit (DETBAT) that disables the IC when  
the battery pack is absent. The IC disables charging if  
the input sources exceed 7.5V to protect against  
unqualified or faulty AC adapters. The MAX8845Z EV kit  
also features an adjustable fast-charge current set by  
an external resistor (R1) and an adjustable top-off cur-  
rent threshold set by an external resistor (R2).  
Current-Sense Resistor  
o Programmable Fast-Charge Currents (1A  
max)  
RMS  
o Programmable Top-Off Current Threshold  
o Input Overvoltage-Protected 4.7V Output  
(SAFEOUT) from DC  
o Proprietary Die Temperature Regulation Control  
(+115°C)  
o 4.25V to 28V Input-Voltage Range with Input  
Other features include an active-low control input (EN)  
and an active-low input power source detection output  
(POK). The IC also contains a booting assistant circuit  
that distinguishes input sources and battery connec-  
tion, and provides an output signal (MAX8845Z = ABO,  
MAX8845Y = ABO) for system booting.  
Overvoltage Protection Above +7.5V  
o Low-Dropout Voltage (300mV at 500mA)  
o Input Power-Source Detection Output (POK),  
Charge Status Output (CHG), and Charge-Enable  
Input (EN)  
To evaluate the MAX8845Y version, order the  
MAX8845YETC+ along with the MAX8845ZEVKIT+ and  
see the Evaluating the MAX8845Y section.  
o Output for Autobooting (MAX8845Z = ABO,  
MAX8845Y = ABO)  
o Lead(Pb)-Free and RoHS Compliant  
Ordering Information  
PART  
TYPE  
MAX8845ZEVKIT+  
EV Kit  
+Denotes lead(Pb)-free and RoHS compliant.  
Component List  
DESIGNATION QTY  
DESCRIPTION  
DESIGNATION QTY  
DESCRIPTION  
1µF 10ꢀ, ꢁ5V X5R ceramic  
capacitor (060ꢁ)  
1µF 10ꢀ, 10V X5R ceramic  
capacitor (0402)  
C1  
C2  
Cꢁ  
1
1
1
C4  
1
Taiyo Yuden GMK107BJ105KA  
Murata GRM155R61A105K  
C5  
0
2
Not installed, capacitor  
2.2µF 10ꢀ, 10V X5R ceramic  
capacitor (060ꢁ)  
Taiyo Yuden LMK107BJ225KA  
Murata GRM188R61A225KEꢁ4  
Red LEDs  
Panasonic LNJ208R8ARA  
D1, D2  
2-pin headers, 0.1in center  
Sullins PECꢁ6SAAN  
Digi-Key S1012E-ꢁ6-ND  
JU1–JU4  
R1  
4
1
0.1µF 10ꢀ, 16V X7R ceramic  
capacitor (0402)  
TDK C1005X7R1C68ꢁK  
2.80kΩ 1ꢀ resistor (0402)  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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与MAX8845ZEVKIT相关器件

型号 品牌 获取价格 描述 数据表
MAX8845ZEVKIT+ MAXIM

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 		Programmable Top-Off Current Threshold
MAX8847Y MAXIM

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 		High-Performance Negative Charge Pump for 6 White LEDs in 3mm x 3mm Thin QFN
MAX8847YETE+T MAXIM

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 		High-Performance Negative Charge Pump for 6 White LEDs in 3mm x 3mm Thin QFN
MAX8847Z MAXIM

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 		High-Performance Negative Charge Pump for 6 White LEDs in 3mm x 3mm Thin QFN
MAX8847ZETE+T MAXIM

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 		High-Performance Negative Charge Pump for 6 White LEDs in 3mm x 3mm Thin QFN
MAX8848Y MAXIM

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 		High-Performance Negative Charge Pump for 7 White LEDs in 3mm x 3mm Thin QFN
MAX8848YETE+T MAXIM

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 		High-Performance Negative Charge Pump for 7 White LEDs in 3mm x 3mm Thin QFN
MAX8848Z MAXIM

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 		High-Performance Negative Charge Pump for 7 White LEDs in 3mm x 3mm Thin QFN
MAX8848ZETE+T MAXIM

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 		High-Performance Negative Charge Pump for 7 White LEDs in 3mm x 3mm Thin QFN
MAX884C MAXIM

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 		5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators

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