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LTC4160EPDC-1PBF Datasheet(PDF) 1 Page - Linear Technology

Part # LTC4160EPDC-1PBF
Description  Switching Power Manager with USB On-The-Go And Overvoltage Protection
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4160EPDC-1PBF Datasheet(HTML) 1 Page - Linear Technology

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LTC4160/LTC4160-1
1
41601f
TYPICAL APPLICATION
DESCRIPTION
Switching Power Manager
with USB On-The-Go And
Overvoltage Protection
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 the ultra-thin
(0.55 mm) 20-pin 3mm
× 4mm UTQFN surface mount
package.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. 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 (8μA)
n Ultra-Thin (0.55mm) 20-pin 3mm
× 4mm 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
USB
ON-THE-GO
3.3μH
10μF
0.1μF
3.01k
1k
41601 TA01a
CLPROG
PROG
LTC4160/
LTC4160-1
SW
VOUT
BAT
Li-Ion
+
OVGATE
OVSENS
OPTIONAL
OVERVOLTAGE
PROTECTION
SYSTEM
LOAD
6.2k
10μF
LOAD CURRENT (mA)
0
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
4.5
5.0
5.5
41601 TA01b
4.0
3.5
3.0
200
400
600
100
300
500
700
VBUS = 4.75V
VOUT = BAT = 3.8V
USB 2.0 SPECIFICATIONS
REQUIRE THAT HIGH
POWER DEVICES NOT
OPERATE IN THIS REGION


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