參數(shù)資料
型號(hào)： MAX1645
廠商： Maxim Integrated Products, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting
中文描述： 高級(jí)、與化學(xué)類型無(wú)關(guān)的Level 2電池充電器，帶有輸入限流
文件頁(yè)數(shù)： 1/32頁(yè)
文件大?。?/td> 330K
代理商： MAX1645
General Description
The MAX1645 are high-efficiency battery chargers capa-
ble of charging batteries of any chemistry type. It uses the
Intel System Management Bus (SMBus
) to control volt-
age and current charge outputs.
When charging lithium-ion (Li+) batteries, the MAX1645
automatically transition from regulating current to regu-
lating voltage. The MAX1645 can also limit line input
current so as not to exceed a predetermined current
drawn from the DC source. A 175s charge safety timer
prevents “runaway charging” should the MAX1645 stop
receiving charging voltage/ current commands.
The MAX1645 employs a next-generation synchronous
buck control circuity 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.
Applications
Notebook Computers
Point-of-Sale Terminals
Personal Digital Assistants
Features
o
Input Current Limiting
o
175s 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
Advanced Chemistry-Independent, Level 2
Battery Chargers with Input Current Limiting
________________________________________________________________
Maxim Integrated Products
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.
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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
MAX1645A
19-1566; Rev 2; 1/01
PART
MAX1645
EEI
MAX1645A
EEI
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
28 QSOP
28 QSOP
Typical Operating Circuit appears at end of data sheet.
SMBus is a trademark of Intel Corp.
Pin Configuration
Ordering Information
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1645AEEI 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MAX1645AEEI+T 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MAX1645AEEI-T 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MAX1645AEVSYS 制造商:Maxim Integrated Products 功能描述:KIT PKG - Bulk
MAX1645BEEI 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
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