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| 型号： | MAX745EAP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY CHARGER LI+ 20-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 6 V ~ 24 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 带卷 (TR) |
19-1182; Rev 3; 10/01
N KIT M
TA SHE
LUATIO ET
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ANUAL
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General Description
The MAX745 provides all functions necessary for
charging lithium-ion (Li+) battery packs. It provides a
regulated 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% resis-
tors to set the output voltage, and a low-cost N-channel
MOSFET 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 4V and 4.4V using standard 1% resistors, and
then the number of cells is set from 1 to 4 by pin-strap-
ping. 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 Li+
charger using a linear-regulator control scheme, refer
Switch-Mode Lithium-Ion
Battery-Charger
____________________________Features
? Charges 1 to 4 Li+ Battery Cells
? ±0.75% Voltage-Regulation Accuracy
Using 1% Resistors
? Provides up to 4A without Excessive Heating
? 90% Efficient
? Uses Low-Cost Set Resistors and
N-Channel Switch
? Up to 24V Input
? Up to 18V Maximum Battery Voltage
? 300kHz Pulse-Width Modulated (PWM) Operation
Low-Noise, Small Components
? Stand-Alone Operation—No Microcontroller
Needed
Ordering Information
to the MAX846A.
________________________Applications
Li+ Battery Packs
PART
MAX745C/D
MAX745EAP
TEMP RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
Dice*
20 SSOP
Desktop Cradle Chargers
Cellular Phones
Notebook Computers
* Dice are tested at T A = +25°C.
Pin Configuration appears at end of data sheet.
Hand-Held Instruments
Typical Operating Circuit
V IN
(UP TO 24V)
DCIN
VL
CELL
COUNT
SELECT
CELL0
CELL1
BST
DHI
N
ON
OFF
THM/SHDN
LX
REF
MAX745
DLO
N
I CHARGE
SETI
VADJ
CS
SET PER
CELL VOLTAGE
WITH 1% RESISTORS
STATUS
CCV
CCI
GND
IBAT
BATT
PGND
R SENSE
VOUT
1–4 Li+ CELLS
(UP TO 18V)
SMBus is a trademark of Intel Corp.
________________________________________________________________ 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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX745EVKIT | 功能描述:电池管理 Evaluation Kit for the MAX745 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX7461EUK | 制造商:Maxim Integrated Products 功能描述:LOSS-OF-SYNC ALARM - Rail/Tube |
| MAX7461EUK+ | 制造商:Maxim Integrated Products 功能描述:LOSS OF SYNC ALARM 5PIN SOT-23 - Rail/Tube |
| MAX7461EUK+T | 功能描述:视频 IC Loss-Of-Sync Alarm RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| MAX7461EUK-T | 功能描述:视频 IC RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
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