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参数资料
| 型号： | LTC4099EUDC#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/36页 |
| 文件大小： | 0K |
| 描述： | IC USB PWR MANAGER/CHRGR 20-QFN |
| 标准包装： | 91 |
| 系列： | PowerPath™ |
| 功能： | 电源管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 4.35 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN（3x4） |
| 包装： | 管件 |
| 产品目录页面： | 1341 (CN2011-ZH PDF) |
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LTC4099
I 2 C Controlled
USB Power Manager/Charger
with Overvoltage Protection
Switching Regulator with Bat-Track? Adaptive Output
Media Players
Portable Navigation Devices
FEATURES
n
Control Makes Optimal Use of Limited Input Power
n I 2 C Port for Optimal System Performance and
Status Information
n Input Overvoltage Protection
n Bat-Track Control of External Step-Down Switching
Regulator Maximizes Efficiency from Automotive
and Other High Voltage Sources
n Instant-On Operation with Low Battery
n Optional Overtemperature Battery Conditioner
Improves High Temperature Battery Safety Margin
n Ideal Diode Seamlessly Connects Battery When Input
Power is Limited or Unavailable
n Full-Featured Li-Ion/Polymer Battery Charger
n 1.5A Maximum Charge Current with Thermal Limiting
n Slew Control Reduces Switching EMI
n 20-Lead 3mm × 4mm × 0.75mm QFN Package
APPLICATIONS
n
n
n Smart Phones
n Industrial Handhelds
n Portable Medical Instruments
DESCRIPTION
The LTC ? 4099 is an I 2 C controlled high efficiency USB
PowerPath? controller and full-featured Li-Ion/Polymer
battery charger. It seamlessly manages power distribution
from multiple sources including USB, a wall adapter and
a Li-Ion/Polymer battery.
The LTC4099 automatically limits its input current for
USB compatibility. For automotive and other high volt-
age applications, the LTC4099 interfaces with an external
switching regulator. Both the USB input and the auxiliary
input controller feature Bat-Track optimized charging to
provide maximum power to the application and reduced
heat in high power density applications.
The I 2 C port allows digital control of important application
parameters including input current limit, charge current
and float voltage. Several status bits can also be read back
via I 2 C.
An overvoltage protection circuit guards the LTC4099
from high voltage damage on the low voltage V BUS pin.The
LTC4099 is available in a 20-Lead 3mm × 4mm × 0.75mm
QFN Package.
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of
Linear Technology Corporation. PowerPath, Bat-Track and ThinSOT are trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 6522118, 6570372, 6700364, 6819094. Other patents
pending.
USB
V OUT
LTC4099
TYPICALAPPLICATION
I 2 C Controlled High Efficiency Battery Charger/
USB Power Manager
OVERVOLTAGE
PROTECTION
3.3μH
V BUS SW
10μF
OVGATE BAT
6.2k
OVSENS BATSENS
SYSTEM
LOAD
10μF
1.8
1.6
1.4
1.2
1.0
0.8
Reduced Power Dissipation
vs Linear Battery Charger
LINEAR BATTERY V IN = 5V
CHARGER I CHARGE = 1A
ADDITIONAL POWER
AVAILABLE FOR CHARGING
TO μCONTROLLER
2
I 2 C
CLPROG PROG
GND
NTCBIAS
NTC
100k
0.6
0.4
SWITCHING BATTERY
CHARGER
0.1μF
3.01k
1.02k
100k
T
+
Li-Ion
0.2
0
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
4099 TA01a
BATTERY VOLTAGE (V)
4099 TA01b
4099fd
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相关代理商/技术参数 |
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| LTC4100EG#TR | 功能描述:IC CHARGER SMART BATTERY 24-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
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