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A4059MP8VR 参数 Datasheet PDF下载

A4059MP8VR图片预览
型号: A4059MP8VR
PDF下载: 下载PDF文件 查看货源
内容描述: [BATTERY MANAGEMENT STANDALONE LINEAR LI-ION BATTERY CHARGER]
分类和应用:
文件页数/大小: 12 页 / 317 K
品牌: AITSEMI [ AiT Semiconductor ]
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A4059  
BATTERY MANAGEMENT  
AiT Semiconductor Inc.  
www.ait-ic.com  
PROGRAMMABLE VOLTAGE AND  
CURRENT LINEAR BATTERY MANAGEMENT CHIP  
Enable design  
By controlling whether the ISET pin resistor connected, users can reach close A4059 function. Figure 1a .  
Can also be achieved simultaneously through the TEMP port Close A4059 the function. When the external  
battery is not in NTC resistor can be set through the microcontroller TEMP port Wade is 0 to achieve open  
A4059, to configure external resistors R1 and R2 to achieve closure A4059.Figure 1b.  
Figure 1a  
Figure 1b  
Figure 1. A4059 Enable Design  
Determine the value of R1, R2  
The value of R1 and R2 according to battery temperature monitoring range and the thermistor resistance  
values to determine, are described as follows: assume that the temperature range of the battery set TL ~ TH,  
(TL <TH); batteries used in negative temperature coefficient thermistor (NTC), RTL TL when its temperature  
resistance, RTH its resistance when the temperature TH, then the RTL> RTH, then the temperature TL, the  
first pin TEMP-side voltage is:  
When the temperature reaches TH, the first side of the TEMP pin voltage  
is:  
thenaccording to: VTEMPL = VHIGH = K2 x VIN (K2 = 0.6)  
VTEMPH=VLOW=K1 x VIN (K1=0.3)  
Can solve for:  
Similarly, if the battery is the positive temperature coefficient of internal (PTC) thermistor the RTH> RTL, we  
can calculate:  
REV1.0 - OCT 2013 RELEASED -  
- 8 -