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參數(shù)資料
| 型號(hào)： | MAX745EAP |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Switch-Mode Lithium-Ion Battery-Charger |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO20 |
| 封裝： | SSOP-20 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 91K |
| 代理商： | MAX745EAP |
M
S witc h-Mode Lithium-Ion
Battery-Charger
________________________________________________________________ Maxim Integrated Products
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.
1
General Desc ription
The MAX745 provides all functions necessary for
charging lithium-ion battery packs. It provides a regu-
lated charging current of up to 4A without getting hot,
and a regulated voltage with only ±0.75% total error at
the battery terminals. It uses low-cost, 1% resistors to
set the output voltage, and a low-cost N-channel MOS-
FET as the power switch.
The MAX745 regulates the voltage set point and charg-
ing current using two loops that work together to transi-
tion smoothly between voltage and current regulation.
The per-cell battery voltage regulation limit is set
between 4.0V and 4.4V using standard 1% resistors,
and then the number of cells is set from 1 to 4 by pin-
strapping. Total output voltage error is less than ±0.75%.
For a similar device with an SMBus microcontroller
interface and the ability to charge NiCd and NiMH cells,
refer to the MAX1647 and MAX1648. For a low-cost
lithium-ion charger using a linear-regulator control
scheme, refer to the MAX846A.
____________________________Features
o
Charges 1 to 4 Lithium-Ion Battery Cells
o
±0.75% Voltage-Regulation Accuracy
Using 1% Resistors
o
Provides up to 4A without Excessive Heating
o
90% Efficient
o
Uses Low-Cost Set Resistors and
N-Channel Switch
o
Up to 24V Input
o
Up to 18V Maximum Battery Voltage
o
300kHz PWM Operation: Low-Noise,
Small Components
o
Stand-Alone Operation; No Microcontroller
Needed
___________________________________________________Typic al Operating Circ uit
19-1182; Rev 2; 12/98
PART
MAX745EAP
-40°C to +85°C
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
Dice*
20 SSOP
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
Ordering Information
Pin Configuration appears on last page.
________________________Applic ations
Lithium-Ion Battery Packs
Desktop Cradle Chargers
Cellular Phones
Notebook Computers
Hand-Held Instruments
MAX745C/D
*
Dice are tested at T
A
= +25°C.
SMBus is a trademark of Intel Corp.
(UP TO 24V)
REF
DCIN
V
IN
BST
VL
DHI
DLO
LX
CS
BATT
PGND
CELL
COUNT
SELECT
SET PER
CELL VOLTAGE
WITH 1% RESISTORS
ON
OFF
VADJ
STATUS
SETI
CELL0
CELL1
CCI
GND
IBAT
CCV
N
N
I
CHARGE
R
SENSE
VOUT
1–4 Li+ CELLS
(UP TO18V)
MAX745
THM/SHDN
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX745EAP+ | 功能描述:電池管理 Switch-Mode Li Battery 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 |
| MAX745EAP+ | 制造商:Maxim Integrated Products 功能描述:CONVERTOR DC/DC ((NW)) |
| MAX745EAP+T | 功能描述:電池管理 Switch-Mode Li Battery 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 |
| MAX745EAP-T | 功能描述:電池管理 Switch-Mode Li Battery 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 |
| MAX745EVKIT | 功能描述:電池管理 Evaluation Kit for the MAX745 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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