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| 型號(hào)： | LTC4160EUDC#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY MANAGEMENT CKT, PQCC20 |
| 封裝： | 3 X 4 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-20 |
| 文件頁(yè)數(shù)： | 1/32頁(yè) |
| 文件大?。?/td> | 422K |
| 代理商： | LTC4160EUDC#TRPBF |
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LTC4160/LTC4160-1
1
41601fa
TYPICAL APPLICATION
DESCRIPTION
Switching Power Manager
with USB On-The-Go And
Overvoltage Protection
The LTC4160/LTC4160-1 are high efficiency power man-
agementandLi-Ion/PolymerbatterychargerICs.Theyeach
include a bidirectional switching PowerPath controller
with automatic load prioritization, a battery charger, and
an ideal diode.
TheLTC4160/LTC4160-1’sbidirectionalswitchingregulator
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.
FEATURES
APPLICATIONS
n
Bidirectional Switching Regulator Makes Optimal
Use of Limited Power Available from USB Port and
also Provides a 5V Output for USB On-The-Go
n
Overvoltage Protection Guards Against Damage
n
180mΩ Internal Ideal Diode Plus Optional External
Ideal Diode Controller Seamlessly Provides Low
Loss PowerPath When Input Power is Limited or
Unavailable
n
Instant-On Operation with Discharged Battery
n
Full Featured Li-Ion/Polymer Battery Charger
n
Bat-Track Adaptive Output Control For Efficient
Charging
n
1.2A Max Input Current Limit
n
1.2A Max Charge Current with Thermal Limiting
n
Battery Float Voltage: 4.2V (LTC4160), 4.1V
(LTC4160-1)
n
Low Battery Powered Quiescent Current (8A)
n
20-pin 3mm × 4mm × 0.75mm QFN Package
n
Media Players and Personal Navigation Devices
n
Digital Cameras, PDAs, Smart Phones
Battery and VBUS Currents
vs Load Current
High Efficiency Power Manager/Battery Charger with USB
On-The-Go and Overvoltage Protection
VBUS
USB
ON-THE-GO
3.3H
10F
0.1F
3.01k
1k
41601 TA01a
CLPROG PROG
LTC4160/
LTC4160-1
SW
VOUT
BAT
Li-Ion +
OVGATE
OVSENS
OPTIONAL
OVERVOLTAGE
PROTECTION
SYSTEM
LOAD
6.2k
10F
LOAD CURRENT (mA)
0
CURRENT
(mA)
250
500
750
800
41601 TA01c
0
–250
–500
200
400
600
1000
VBUS CURRENT
BATTERY CURRENT
(CHARGING)
VBUS = 5V
BAT = 3.8V
5x MODE
BATTERY CURRENT
(DISCHARGING)
USB OTG VBUS Voltage
vs VBUS Current
VBUS CURRENT (mA)
0
V BUS
(V)
4.5
5.0
5.5
41601 TA01b
4.0
3.5
3.0
200
400
600
100
300
500
700
VBUS = 4.75V
IVBUS
=
500mA
VOUT = BAT = 3.8V
USB 2.0 SPECIFICATIONS
REQUIRE THAT HIGH
POWER DEVICES NOT
OPERATE IN THIS REGION
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