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參數(shù)資料
| 型號： | MAX1757 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Stand-Alone, Switch-Mode Li Battery Charger with Internal 14V Switch |
| 中文描述： | 獨立的開關(guān)模式Li+電池充電器，內(nèi)置14V開關(guān) |
| 文件頁數(shù)： | 1/17頁 |
| 文件大小： | 218K |
| 代理商： | MAX1757 |
General Description
The MAX1757 is a switch-mode lithium-ion (Li+) battery
charger that charges one to three cells. It provides a
regulated charging current accurate to ±10% and a
regulated voltage with only a ±0.8% total voltage error
at the battery terminals. The internal high-side switch
delivers a programmable current of up to 1.5A to
charge the battery. The built-in safety timer automatical-
ly terminates charging once the adjustable time limit
has been reached.
The MAX1757 regulates the voltage set point and
charging current using two loops that work together to
transition smoothly between voltage and current regula-
tion. An additional control loop monitors the total cur-
rent drawn from the input source (charging + system)
and by automatically reducing battery-charging current
prevents overload of the input supply, allowing the use
of a low-cost wall adapter.
The per-cell battery regulation voltage is set between
4.0V and 4.4V using standard 1% resistors. The num-
ber of cells is set from 1 to 3 by pin strapping. Battery
temperature is monitored by an external thermistor to
prevent charging outside the acceptable temperature
range.
The MAX1757 is available in a space-saving 28-pin
SSOP package. Use the MAX1757EVKIT to help reduce
design time. For a stand-alone charger with a 28V
switch, refer to the MAX1758 data sheet. For a charger
controller capable of up to 4A charging current, refer to
the MAX1737 data sheet.
________________________Applications
Li+ Battery Packs
Notebook Computers
Hand-Held Instruments
Features
o
Stand-Alone Charger for Up to 3 Li+ Batteries
o
±0.8% Battery Regulation Voltage Accuracy
o
Low-Dropout 98% Duty Cycle
o
Safely Precharges Near-Dead Cells
o
Continuous Voltage and Temperature Monitoring
o
0.1μA Shutdown Battery Current
o
Input Voltage Up to 14V
o
Up to 1.5A Programmable Charge Current
o
Input Current Limiting
o
Space-Saving 28-Pin SSOP
o
300kHz PWM Oscillator Reduces Noise
M
Stand-Alone, Switch-Mode
Li+ Battery Charger with Internal 14V Switch
________________________________________________________________
Maxim Integrated Products
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
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DCIN
CSSP
CSSN
CCV
CCI
CCS
FASTCHG
BST
CS
LX
LX
PGND
SHDN
FULLCHG
FAULT
TIMER2
TIMER1
CELL
HSD
HSD
BATT
VADJ
GND
REF
THM
ISETOUT
ISETTIN
VL
SSOP
TOP VIEW
MAX1757
Pin Configuration
19-1754; Rev 0; 6/00
EVALUATION KIT
AVAILABLE
Ordering Information
28 SSOP
PIN-PACKAGE
TEMP. RANGE
-40°C to +85°C
MAX1757EAI
PART
GND
DCIN
V
IN
6V to 14V
CSSP
CSSN
LX
BST
VL
PGND
CS
BATT
THM
THERM
FASTCHG
FULLCHG
FAULT
HSD
SYSTEM
Li+ BATTERY
1 TO 3 CELLS
MAX1757
ISETOUT
ISETIN
VADJ
CCS
CCI
CCV
REF
TIMER1
TIMER2
SHDN
ON
OFF
CELL
PDAs
Desktop Cradle Chargers
Typical Operating Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1757EAI | Stand-Alone, Switch-Mode Li Battery Charger with Internal 14V Switch |
| MAX1758 | Replaced by TMS320C6410 : Digital Signal Processor 100-LQFP |
| MAX1758EAI | Stand-Alone, Switch-Mode Li Battery Charger with Internal 28V Switch |
| MAX1759 | Replaced by TMS320C6410 : Digital Signal Processor 100-LQFP |
| MAX1759EUB | Buck/Boost Regulating Charge Pump in レMAX |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1757EAI | 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 |
| MAX1757EAI+ | 功能描述:電池管理 Li+ Battery Charger w/Int 14V Switch 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 |
| MAX1757EAI+T | 功能描述:電池管理 Li+ Battery Charger w/Int 14V Switch 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 |
| MAX1757EAI-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 |
| MAX1757EVKIT | 功能描述:電池管理 Evaluation Kit for the MAX1757 MAX1758 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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