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参数资料
| 型号： | LTC4067EDE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC USB POWER MANAGER 12-DFN |
| 标准包装： | 91 |
| 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： | 5.5V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-WFDFN 裸露焊盘 |
| 供应商设备封装： | 12-DFN（4x3） |
| 包装： | 管件 |
LTC4067
USB Power Manager
with OVP and
Li-Ion/Polymer Charger
FEATURES
Programmable Input Current Limit:
■ Single Resistor at CLPROG Pin to Set and Monitor
Input Current
Battery Charger/Ideal Diode/Controller:
■ 13V Overvoltage Protection
■ Full Featured Battery Charger with 4.2V Float
■ Up to 1.25A Programmable Charge Current
■ Thermal Regulation Maximizes Charge Current
Without Risk of Overheating
■ Internal 2 Hour Termination Timer from Onset of
Voltage Mode Charging
■ Automatic Load Switchover to Battery Power with
Internal Ideal Diode and Drive Output for Optional
External MOSFET
■ NTC Thermistor Input
■ Bad Battery Time-Out Detection
■ 4mm × 3mm 12-Lead DFN Package
APPLICATIO S
DESCRIPTIO
The LTC ? 4067 is a USB power management and Li-Ion/
Polymer battery charger designed for portable battery
powered applications. The part controls total current used
by the USB peripheral for operation and battery charging.
The total input current may be left unregulated, or it may
be limited to 20% or 100% of the programmed value up
to 1.5A (typically 500mA). Battery charge current is au-
tomatically reduced such that the sum of the load current
and the charge current does not exceed the programmed
input current.
With the addition of an external P-channel MOSFET the
LTC4067 can withstand voltages up to 13V.
The LTC4067 includes a complete constant current/con-
stant voltage linear charger for single cell Li-Ion batteries.
The ?oat voltage applied to the battery is held to a tight
0.4% tolerance, and charge current is programmed using
an external resistor to ground. An end-of-charge status
output, ? C ? H ? R ? G, indicates full charge. Also featured is an
NTC thermistor input used to monitor battery temperature
■
■
■
Automatic Battery Charging/Load Switchover
Backup Battery Charger
Uninterrupted Supplies
while charging.
The LTC4067 is available in a 12-lead low pro?le 4mm ×
3mm DFN package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
I LOAD
OVP Response to Ramp Input at OVI
OVI
OUT
WALL
OR
USB
10nF
OVP
10 μ F
V OVI
5V/DIV
5V TO 12V
1 μ F
10 μ F
IN
LTC4067
BAT
1-CELL
Li-Ion
I IN
500mA/DIV
V OUT
5V/DIV
I LIM0
I LIM1
CHRG
PROG
I LIM0
L
I LIM1
H
I IN(MAX)
O (SUSPEND)
V OVP
5V/DIV
V BAT = 4.2V
2k
CLPROG
4067 TA01
GND
2k
L
H
H
L
H
L
200V/R CLPROG
1000V/R CLPROG
FIXED (2A)
1ms/DIV
4067 TA01b
4067f
1
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相关代理商/技术参数 |
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| LTC4068-4.2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Standalone Linear Li-Ion Battery Charger with Programmable Termination |
| LTC4068EDD-4.2 | 功能描述:IC BATT CHARGER W/PROG TERM 8DFN RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 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:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4068EDD-4.2#PBF | 功能描述:IC CHARGER BATT LI-ON 8-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 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:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4068EDD-4.2#TR | 功能描述:IC BATT CHARGER W/PROG TERM 8DFN RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 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:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC4068EDD-4.2#TRPBF | 功能描述:IC BATT CHARGER W/PROG TERM 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 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:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
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