參數(shù)資料
型號(hào)： MAX1679
廠商： Maxim Integrated Products, Inc.
英文描述： Single-Cell Li Battery Charger for Current-Limited Supply
中文描述： 單節(jié)鋰電池充電器的電流供應(yīng)量有限
文件頁數(shù)： 1/12頁
文件大?。?/td> 138K
代理商： MAX1679
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 Description
The MAX1679 battery charger for a single lithium-ion (Li+)
cell comes in a space-saving 8-pin μMAX package. This
simple device, in conjunction with a current-limited wall
cube and a PMOS transistor, allows safe and fast charg-
ing of a single Li+ cell.
The MAX1679 initiates charging in one of three ways:
battery insertion, charger power-up, or external manip-
ulation of the THERM pin. Charging terminates when
the average charging current falls to approximately 1%
of the fast-charge current, or when the on-chip counter
times out.
Key safety features include continuous voltage and
temperature monitoring, a programmable charger time-
out, and a 5mA precharge current mode to charge
near-dead cells. Automatic detection of input power
removal shuts down the device, minimizing current
drain from the battery. An overall system accuracy of
0.75% ensures that the cell capacity is fully utilized
without cycle life degradation.
The MAX1679 evaluation kit (MAX1679EVKIT) is avail-
able to help reduce design time.
Applications
Single-Cell Li+ Portable Applications
Self-Charging Battery Packs
PDAs
Cell Phones
Cradle Chargers
Features
o
Simple Stand-Alone Application Circuit
o
Lowest Power Dissipation
o
8-Pin μMAX Package Saves Space
o
No Inductor Required
o
0.75% Overall System Accuracy
o
Continuous Voltage and Temperature Protection
o
Safely Precharges Near-Dead Cells
o
Programmable Safety Timeout
o
Top-Off Charging to Achieve Full Battery Capacity
o
Automatic Power-Down when Power Source is
Removed
M
Single-Cell Li+ Battery Charger
for Current-Limited Supply
________________________________________________________________ Maxim Integrated Products
1
BATT
GND
BATTERY
THERM
ADJ
GATE
PFET
CURRENT-
LIMITED
VOLTAGE
SOURCE
TIMER
RANGE
SELECT
CHG
LED
THERMISTOR
IN
MAX1679
TSEL
1
2
3
4
8
7
6
5
BATT
THERM
GND
ADJ
TSEL
CHG
GATE
IN
MAX1679
μ
MAX
TOP VIEW
Typical Operating Circuit
19-1545; Rev 0; 9/99
EVALUATION KIT
AVAILABLE
Pin Configuration
Ordering Information
PIN-PACKAGE
8 μMAX
TEMP. RANGE
-40°C to +85°C
PART
MAX1679EUA
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1679EUA 功能描述:電池管理 Battery Charger Current-Limited Sply 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
MAX1679EUA+ 功能描述:電池管理 Battery Charger Current-Limited Sply 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
MAX1679EUA+T 功能描述:電池管理 Battery Charger Current-Limited Sply 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
MAX1679EUA-T 功能描述:電池管理 Battery Charger Current-Limited Sply 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
MAX167ACNG 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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