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MAX1909

更新时间： 2024-11-26 21:55:19
品牌 Logo 应用领域
美信 - MAXIM 电池
页数 文件大小 规格书
29页 547K
描述
Multichemistry Battery Charger with Automatic System Power Selector

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中文翻译

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MAX1909 数据手册

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19-2805; Rev 0; 4/03  
Multichemistry Battery Charger with Automatic  
System Power Selector  
General Description  
Features  
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The MAX1909 highly integrated control IC simplifies  
construction of accurate and efficient multichemistry  
battery chargers. The MAX1909 uses analog inputs to  
control charge current and voltage, and can be pro-  
grammed by a host microcontroller (µC) or hardwired.  
High efficiency is achieved through use of buck topolo-  
gy with synchronous rectification.  
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ꢀCruꢁt%ꢂVoarꢁt  
The maximum current drawn from the AC adapter is  
programmable to avoid overloading the AC adapter  
when supplying the load and the battery charger simul-  
taneously. The MAX1909 provides a digital output that  
indicates the presence of an AC adapter, and an ana-  
log output that monitors the current drawn from the AC  
adapter. Based on the presence or absence of the AC  
adapter, the MAX1909 automatically selects the appro-  
priate source for supplying power to the system by con-  
trolling two external P-channel MOSFETs. Under system  
control, the MAX1909 allows the battery to undergo a  
relearning or conditioning cycle in which the battery is  
completely discharged through the system load and  
then recharged.  
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Ordering Information  
P RT  
TEMP%R NGE  
PꢅN-P ꢀK GE  
The MAX1909 is available in a space-saving 28-pin,  
5mm ✕ 5mm thin QFN package and operates over the  
extended -40°C to +85°C temperature range.  
MAX1909ETI  
-40°C to +85°C  
28 Thin QFN  
Minimum Operating Circuit  
Applications  
Notebook and Subnotebook Computers  
P3  
TO  
EXTERNAL LOAD  
0.01Ω  
AC ADAPTER: INPUT  
SRC  
Hand-Held Data Terminals  
CSSP  
CSSN  
DHIV  
PDS  
SRC  
Pin Configuration  
PDL  
P2  
DCIN  
TOP VIEW  
MAX1909  
LDO  
VCTL  
ICTL  
LDO  
28 27  
26  
25 24 23  
22  
MODE  
DLOV  
DHI  
DCIN  
LDO  
1
2
3
4
5
6
7
21 DLOV  
ACIN  
P1  
VCC  
IINP  
REF  
IINP  
CLS  
20  
19  
DLO  
ACIN  
PGND  
ACOK  
REF  
18 CSIP  
17 CSIN  
LDO  
MAX1909  
TO  
N1  
DLO  
10µH  
HOST  
PKPRES  
ACOK  
MODE  
SYSTEM  
PGND  
CSIP  
16  
BATT  
PKPRES  
15 GND  
0.015Ω  
8
9
10 11 12 13  
14  
CCV  
CCI  
CSIN  
BATT  
GND  
CCS  
REF  
THꢅN%QFN  
Functional Diagrams appear at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...29

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与MAX1909相关器件

型号 品牌 获取价格 描述 数据表
MAX1909ETI MAXIM

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 		Multichemistry Battery Charger with Automatic System Power Selector
MAX1909ETI+ MAXIM

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 		Power Supply Support Circuit, Adjustable, 2 Channel, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, MO-
MAX1909ETI-T MAXIM

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 		暂无描述
MAX1909EVKIT MAXIM

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 		Evaluation Kit for the MAX1909
MAX190ACNG MAXIM

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 		Low-Power, 12-Bit Sampling ADCs with Internal Reference and Power-Down
MAX190ACNG+ MAXIM

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 		ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial, Parallel, 8 Bits Access,
MAX190ACNG-T MAXIM

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 		ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial, Parallel, 8 Bits Access,
MAX190ACWG ROCHESTER

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 		1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PDSO24, SOIC-24
MAX190ACWG MAXIM

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 		Low-Power, 12-Bit Sampling ADCs with Internal Reference and Power-Down
MAX190ACWG+ MAXIM

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 		ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial, Parallel, 8 Bits Access,

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