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Linear Technology Electronic Components Datasheet

LTC4160EUDC Datasheet

Switching Power Manager

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FEATURES
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 20-pin 3mm × 4mm × 0.75mm QFN Package
APPLICATIONS
n Media Players and Personal Navigation Devices
n Digital Cameras, PDAs, Smart Phones
LTC4160/LTC4160-1
Switching Power Manager
with USB On-The-Go And
Overvoltage Protection
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.
TYPICAL APPLICATION
USB OTG VBUS Voltage
vs VBUS Current
5.5
VOUT = BAT = 3.8V
5.0
VBUS = 4.75V
4.5
USB 2.0 SPECIFICATIONS
4.0 REQUIRE THAT HIGH
POWER DEVICES NOT
OPERATE IN THIS REGION
3.5
3.0
0
100 200 300 400 500 600 700
VBUS CURRENT (mA)
41601 TA01b
High Efficiency Power Manager/Battery Charger with USB
On-The-Go and Overvoltage Protection
USB
ON-THE-GO
USB
10µF
6.2k
OPTIONAL
OVERVOLTAGE
PROTECTION
VBUS
SW
LTC4160/
LTC4160-1 VOUT
OVGATE
OVSENS
BAT
CLPROG PROG
0.1µF 3.01k 1k
3.3µH
SYSTEM
LOAD
10µF
+
Li-Ion
41601 TA01a
Battery and VBUS Currents
vs Load Current
750
500
VBUS CURRENT
250
BATTERY CURRENT
(CHARGING)
0
–250
VBUS = 5V
BAT = 3.8V
5x MODE
–500
0
BATTERY CURRENT
(DISCHARGING)
200 400 600 800 1000
LOAD CURRENT (mA)
41601 TA01c
41601fa
1


Linear Technology Electronic Components Datasheet

LTC4160EUDC Datasheet

Switching Power Manager

No Preview Available !

LTC4160/LTC4160-1
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2, 3)
VBUS (Transient) t < 1ms, Duty Cycle < 1%... –0.3V to 7V
VBUS (Static), BAT, VOUT, NTC, ENOTG, ID,
ENCHARGER, VBUSGD, FAULT, CHRG......... –0.3V to 6V
ILIM0, IILIM1......... –0.3V to Max(VBUS, VOUT, BAT) + 0.3V
IOVSENS....................................................................10mA
ICLPROG.....................................................................3mA
ICHRG, IVBUSGD, IFAULT.............................................50mA
IPROG.........................................................................2mA
ILDO3V3....................................................................30mA
ISW, IBAT, IVOUT, IVBUS...................................................2A
Operating Temperature Range.................. –40°C to 85°C
Maximum Junction Temperature........................... 125°C
Storage Temperature Range.................... –65°C to 125°C
PIN CONFIGURATION
TOP VIEW
OVGATE 1
OVSENS 2
VBUSGD 3
FAULT 4
ID 5
ENOTG 6
20 19 18 17
16 ILIM1
15 ILIM0
21
14 SW
GND
13 VBUS
12 VOUT
11 BAT
7 8 9 10
UDC PACKAGE
20-LEAD (3mm × 4mm) PLASTIC QFN
TJMAX = 125°C, θJA = 43°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING PACKAGE DESCRIPTION
LTC4160EUDC#PBF
LTC4160EUDC#TRPBF LFXY
20-Lead (3mm × 4mm) Plastic QFN
LTC4160EUDC-1#PBF
LTC4160EUDC-1#TRPBF LFXZ
20-Lead (3mm × 4mm) Plastic QFN
LTC4160EPDC#PBF
LTC4160EPDC#TRPBF FDRT
20-Lead (3mm × 4mm) Plastic UTQFN
LTC4160EPDC-1#PBF
LTC4160EPDC-1#TRPBF FDST
20-Lead (3mm × 4mm) Plastic UTQFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C (OBSOLETE)
–40°C to 85°C (OBSOLETE)
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C (Note 2). VBUS = 5V, BAT = 3.8V, RCLPROG = 3.01k, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
PowerPath Switching Regulator – Step-Down Mode
VBUS
IBUS(LIM)
Input Supply Voltage
Total Input Current
1x Mode
5x Mode
10x Mode
Suspend Mode
4.35
5.5
V
l 82
90
100
mA
l 440
480
500
mA
l 900
955
1000
mA
l 0.32
0.43
0.5
mA
IVBUSQ (Note 4) Input Quiescent Current
1x Mode
5x, 10x Modes
Suspend Mode
7
mA
20
mA
0.050
mA
hCLPROG (Note 4) Ratio of Measured VBUS Current to
CLPROG Program Current
1x Mode
5x Mode
10x Mode
Suspend Mode
211
mA/mA
1170
mA/mA
2377
mA/mA
9.6
mA/mA
41601fa
2


Part Number LTC4160EUDC
Description Switching Power Manager
Maker Linear
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LTC4160EUDC Datasheet PDF






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