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參數(shù)資料
| 型號： | MAX1879 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Simple, Efficient, 1-Cell Li+ Pulse Charger |
| 中文描述： | 簡單、高效率、1節(jié)Li+電池脈沖充電器 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 198K |
| 代理商： | MAX1879 |
General Description
The MAX1879 single-cell lithium-ion (Li+) battery charger
utilizes an efficient pulse-charging architecture to minimize
power dissipation in portable devices. This architecture
combines the efficiency of switch-mode chargers with the
simplicity and low cost of linear chargers. This simple
device, in conjunction with a current-limited wall cube and
a PMOS transistor, allows safe and fast charging of a sin-
gle Li+ cell.
The MAX1879 initiates charging in one of three ways: bat-
tery insertion, charger power-up, or toggling the THERM
pin. Key safety features include continuous voltage and
temperature monitoring, a preset charger time-out, and an
8mA 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 MAX1879 is offered in a space-saving 8-pin μMAX
package. An evaluation kit (MAX1879EVKIT) is available
to help reduce design time.
Applications
Single-Cell Li+ Powered Portables
Self-Charging Battery Packs
PDAs
Cell Phones
Cradle Chargers
Features
o
Simple Design Minimizes Heat
o
Low Component Count, No Inductor
o
Battery-Full Indicator
o
0.75% Accurate Battery Regulation
o
1.5μA (max) Battery Current Drain with Wall Cube
Removed
o
Restart Charging at 4.0V
o
Continuous Overvoltage and Overtemperature
Protection
o
Safely Precharges Near-Dead Cells
o
Automatic Power-Down when Power Source is
Removed
o
Charges 1 Cell from as Low as 4.5V
o
Pin-Compatible Upgrade to MAX1679
M
Simple, Efficient, 1-Cell Li+ Pulse Charger
________________________________________________________________
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.
1
19-2061; Rev 0; 5/01
Ordering Information
PART
TEMP. RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
8-μMAX
MAX1879EUA
BATT
GND
1-CELL
Li+
BATTERY
THERM
ADJ
GATE
CURRENT-
LIMITED
AC WALL
ADAPTER
PULSE WIDTH
SELECT INPUT
CHG
LED
THERMISTOR
IN
MAX1879
TSEL
GND
ADJ
TSEL
1
2
8
7
BATT
THERM
GATE
IN
μ
MAX
TOP VIEW
3
4
6
5
MAX1879
CHG
Typical Operating Circuit
Pin Configuration
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1879EUA | 功能描述:電池管理 1-Cell Li+ Pulse Charger 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 |
| MAX1879EUA+ | 功能描述:電池管理 1-Cell Li+ Pulse Charger 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 |
| MAX1879EUA+T | 功能描述:電池管理 1-Cell Li+ Pulse Charger 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 |
| MAX1879EUA-T | 功能描述:電池管理 1-Cell Li+ Pulse Charger 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 |
| MAX1879EVKIT | 制造商:Maxim Integrated Products 功能描述:SMALLEST, SIMPLE 1-CELL LI- PULSE CHARGER WIT - Bulk |
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