參數(shù)資料
型號(hào)： MAX1644
廠商： Maxim Integrated Products, Inc.
英文描述： Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting
中文描述： 2A、低電壓、降壓型穩(wěn)壓器，內(nèi)置同步整流與開(kāi)關(guān)
文件頁(yè)數(shù)： 1/32頁(yè)
文件大?。?/td> 183K
代理商： MAX1644
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
General Desc ription
The MAX1645 is a high-efficiency battery charger
capable of charging batteries of any chemistry type. It
uses the Intel System Management Bus (SMBus
) to
control voltage and current charge outputs.
When charging lithium-ion (Li+) batteries, the MAX1645
automatically transitions from regulating current to reg-
ulating voltage. The MAX1645 can also limit line input
current so as not to exceed a predetermined current
drawn from the DC source. A 175sec charge safety
timer prevents “runaway charging” should the
MAX1645 stop receiving charging voltage/current com-
mands.
The MAX1645 employs a next-generation synchronous
buck control circuitry that lowers the minimum input-to-
output voltage drop by allowing the duty cycle to
exceed 99%. The MAX1645 can easily charge one to
four series Li+ cells.
Applic ations
Notebook Computers
Point-of-Sale Terminals
Personal Digital Assistants
Features
o
Input Current Limiting
o
175sec Charge Safety Timeout
o
128mA Wake-Up Charge
o
Charges Any Chemistry Battery:
Li+, NiCd, NiMH, Lead Acid, etc.
o
Intel SMBus 2-Wire Serial Interface
o
Compliant with Level 2 Smart Battery Charger
Spec. Rev. 1.0
o
+8V to +28V Input Voltage Range
o
Up to 18.4V Battery Voltage
o
11-Bit Battery Voltage Setting
o
±0.8% Output Voltage Accuracy with Internal
Reference
o
3A max Battery Charge Current
o
6-Bit Charge Current Setting
o
99.99% max Duty Cycle for Low-Dropout Operation
o
Load/Source Switchover Drivers
o
>97% Efficiency
M
Advanc ed Chemistry-Independent, Level 2
Battery Charger with Input Current Limiting
________________________________________________________________ Maxim Integrated Products
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CVS
PDS
CSSP
CSSN
BST
DHI
INT
LX
DLOV
DLO
PGND
CSIP
CSIN
PDL
SDA
SCL
THM
V
DD
DAC
BATT
GND
CCV
CCI
CCS
REF
CLS
LDO
DCIN
QSOP
TOP VIEW
MAX1645
19-1566; Rev 0a; 10/99
PART
MAX1645EEI
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
28 QSOP
Typical Operating Circuit appears at end of data sheet.
SMBus is a trademark of Intel Corp.
Pin Configuration
Ordering Information
相關(guān)PDF資料
PDF描述
MAX1645B Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting
MAX1645BEEI Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting
MAX1647 Chemistry-Independent Battery Chargers
MAX1648 Chemistry-Independent Battery Chargers
MAX1647-MAX1648 Chemistry-Independent Battery Chargers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1644EAE 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1644EAE/GH9 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1644EAE/GH9-T 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1644EAE+ 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 2A Step-Dow w/Synch Rectification RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1644EAE+T 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 2A Step-Dow w/Synch Rectification RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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