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参数资料
| 型号： | LTC4160EUDC-1#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/32页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH POWER MANAGER 20-QFN |
| 标准包装： | 2,500 |
| 系列： | Bat-Track™, 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： | 带卷 (TR) |
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LTC4160/LTC4160-1
Switching Power Manager
with USB On-The-Go And
Overvoltage Protection
Bidirectional Switching Regulator Makes Optimal
Overvoltage Protection Guards Against Damage
180mΩ Internal Ideal Diode Plus Optional External
Instant-On Operation with Discharged Battery
Full Featured Li-Ion/Polymer Battery Charger
Bat-Track? Adaptive Output Control For Efficient
1.2A Max Input Current Limit
1.2A Max Charge Current with Thermal Limiting
Battery Float Voltage: 4.2V (LTC4160), 4.1V
Low Battery Powered Quiescent Current (8μA)
20-pin 3mm × 4mm × 0.75mm QFN Package
Media Players and Personal Navigation Devices
Digital Cameras, PDAs, Smart Phones
FEATURES
n
Use of Limited Power Available from USB Port and
also Provides a 5V Output for USB On-The-Go
n
n
Ideal Diode Controller Seamlessly Provides Low
Loss PowerPath When Input Power is Limited or
Unavailable
n
n
n
Charging
n
n
n
(LTC4160-1)
n
n
APPLICATIONS
n
n
TYPICAL APPLICATION
DESCRIPTION
The LTC ? 4160/LTC4160-1 are high efficiency power man-
agement and Li-Ion/Polymer battery charger ICs. They each
include a bidirectional switching PowerPath? controller
with automatic load prioritization, a battery charger, and
an ideal diode.
The LTC4160/LTC4160-1’s bidirectional switching regulator
transfers nearly all of the power available from the USB
port to the load with minimal loss and heat which eases
thermal constraints in small spaces. These devices feature
a precision input current limit for USB compatibility and
Bat-Track output control for efficient charging. In addition,
the ICs can also generate 5V at 500mA for USB On-The-
Go applications.
An overvoltage circuit protects the LTC4160/LTC4160-1
from high voltage damage on the USB/wall adapter inputs
with an external N-channel MOSFET and a resistor.
The LTC4160/LTC4160-1 are available in a 3mm × 4mm
× 0.75mm QFN surface mount package.
L , LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks
and PowerPath and Bat-Track are a trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patents including
6522118, 6404251. Other patents pending.
USB OTG V BUS Voltage
vs V BUS Current
High Efficiency Power Manager/Battery Charger with USB
On-The-Go and Overvoltage Protection
Battery and V BUS Currents
vs Load Current
5.5
5.0
V BUS = 4.75V
V OUT = BAT = 3.8V
USB
USB
ON-THE-GO
10μF
V BUS
LTC4160/
LTC4160-1
SW
V OUT
3.3μH
SYSTEM
LOAD
10μF
750
500
V BUS CURRENT
+
4.5
4.0
3.5
USB 2.0 SPECIFICATIONS
REQUIRE THAT HIGH
POWER DEVICES NOT
OPERATE IN THIS REGION
6.2k
OPTIONAL
OVERVOLTAGE
PROTECTION
OVGATE
CLPROG PROG
0.1μF 3.01k 1k
OVSENS BAT
Li-Ion
41601 TA01a
250
0
–250
V BUS = 5V
BAT = 3.8V
5x MODE
BATTERY CURRENT
(CHARGING)
BATTERY CURRENT
(DISCHARGING)
3.0
0
100
200
300
400
500
600
700
–500
0
200
400
600
800
1000
V BUS CURRENT (mA)
41601 TA01b
LOAD CURRENT (mA)
41601 TA01c
41601fa
1
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