LTC4160EUDC#PBF Linear Technology, LTC4160EUDC#PBF Datasheet

IC, BATT CHRG, Li-Ion, Li-Polymer, 1.2A, QFN20

LTC4160EUDC#PBF

Manufacturer Part Number
LTC4160EUDC#PBF
Description
IC, BATT CHRG, Li-Ion, Li-Polymer, 1.2A, QFN20
Manufacturer
Linear Technology
Datasheet

Specifications of LTC4160EUDC#PBF

Battery Type
Li-Ion, Li-Polymer
Input Voltage
5.5V
Battery Charge Voltage
4.2V
Charge Current Max
1.2A
Battery Ic Case Style
QFN
No. Of Pins
20
No. Of Series Cells
1
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC4160EUDC#PBFLTC4160EUDC
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC4160EUDC#PBF/I
Manufacturer:
LT
Quantity:
90
Company:
Part Number:
LTC4160EUDC#PBFLTC4160EUDC-1
Manufacturer:
LT
Quantity:
10 000
APPLICATIONS
TYPICAL APPLICATION
FEATURES
n
n
n
n
n
n
n
n
n
n
n
n
n
5.5
5.0
4.5
4.0
3.5
3.0
Bidirectional Switching Regulator Makes Optimal
Use of Limited Power Available from USB Port and
also Provides a 5V Output for USB On-The-Go
Overvoltage Protection Guards Against Damage
180mΩ Internal Ideal Diode Plus Optional External
Ideal Diode Controller Seamlessly Provides Low
Loss PowerPath When Input Power is Limited or
Unavailable
Instant-On Operation with Discharged Battery
Full Featured Li-Ion/Polymer Battery Charger
Bat-Track™ Adaptive Output Control For Efficient
Charging
1.2A Max Input Current Limit
1.2A Max Charge Current with Thermal Limiting
Battery Float Voltage: 4.2V (LTC4160), 4.1V
(LTC4160-1)
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
0
USB 2.0 SPECIFICATIONS
REQUIRE THAT HIGH
POWER DEVICES NOT
OPERATE IN THIS REGION
USB OTG V
100
V
vs V
200
BUS
V
BUS
= 4.75V
BUS
300
CURRENT (mA)
BUS
Current
400
V
OUT
Voltage
500
= BAT = 3.8V
600
41601 TA01b
700
High Efficiency Power Manager/Battery Charger with USB
USB
OVERVOLTAGE
PROTECTION
OPTIONAL
On-The-Go and Overvoltage Protection
6.2k
10µF
ON-THE-GO
USB
V
OVGATE
OVSENS
BUS
0.1µF
CLPROG
LTC4160-1
LTC4160/
3.01k
DESCRIPTION
Switching Power Manager
The LTC
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.
PROG
with USB On-The-Go And
V
1k
BAT
OUT
SW
Overvoltage Protection
®
4160/LTC4160-1 are high efficiency power man-
3.3µH
Li-Ion
41601 TA01a
+
SYSTEM
LOAD
LTC4160/LTC4160-1
10µF
–250
–500
750
500
250
0
0
V
BAT = 3.8V
5x MODE
Battery and V
BUS
= 5V
200
vs Load Current
LOAD CURRENT (mA)
V
400
BUS
BATTERY CURRENT
CURRENT
(DISCHARGING)
BUS
BATTERY CURRENT
(CHARGING)
600
Currents
800
41601 TA01c
41601fa
1
1000

Related parts for LTC4160EUDC#PBF

LTC4160EUDC#PBF Summary of contents

Page 1

... 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 ...

Page 2

... VOUT VBUS Operating Temperature Range.................. –40°C to 85°C Maximum Junction Temperature........................... 125°C Storage Temperature Range ................... –65°C to 125°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC4160EUDC#PBF LTC4160EUDC#TRPBF LTC4160EUDC-1#PBF LTC4160EUDC-1#TRPBF LTC4160EPDC#PBF LTC4160EPDC#TRPBF LTC4160EPDC-1#PBF LTC4160EPDC-1#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER I V Current Available Before VOUT(POWERPATH) OUT Discharging Battery V CLPROG Servo Voltage in Current Limit CLPROG V V Undervoltage Lockout UVLO BUS BAT Differential Undervoltage ...

Page 4

LTC4160/LTC4160-1 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER V PROG Pin Servo Voltage PROG V PROG Pin Servo Voltage in Trickle Charge BAT < V PROG_TRKL V C/10 Threshold Voltage at PROG C/10 h Ratio of ...

Page 5

ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC4160E/LTC4160E-1 are ...

Page 6

LTC4160/LTC4160-1 TYPICAL PERFORMANCE CHARACTERISTICS Ideal Diode V-I Characteristics 1.0 INTERNAL IDEAL DIODE WITH SUPPLEMENTAL EXTERNAL VISHAY 0.8 Si2333 PMOS 0.6 INTERNAL IDEAL DIODE ONLY 0.4 0 BUS 0 0 0.04 0.08 0.12 0.16 FORWARD VOLTAGE (V) 41601 ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS V Quiescent Current vs BUS V Voltage (Suspend) BUS 60 BAT = 3. BUS VOLTAGE (V) 41601 G16 Battery Drain Current vs Battery Voltage 9 ...

Page 8

LTC4160/LTC4160-1 TYPICAL PERFORMANCE CHARACTERISTICS OTG Boost Quiescent Current vs Battery Voltage 3 BAT OUT 2.5 2.0 1.5 1.0 0.5 2.7 3.0 3.3 3.6 3.9 BATTERY VOLTAGE (V) 41601 G25 OTG Boost Efficiency vs Battery Voltage 100 V = ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS 3.3V LDO Output Voltage vs Load Current BUS 3.4 BAT = 3.4V BAT = 3.9V, 4.2V BAT = 3.5V BAT = 3.6V 3.2 3.0 BAT = 3V 2.8 BAT = 3.1V BAT = 3.2V ...

Page 10

LTC4160/LTC4160-1 PIN FUNCTIONS OVGATE (Pin 1): Overvoltage Protection Gate Output. Connect OVGATE to the gate pin of an external N-channel MOSFET. The source of the transistor should be connected to V and the drain should be connected to the product’s ...

Page 11

PIN FUNCTIONS V (Pin 13): Power Pin. This pin delivers power to V BUS via the SW pin by drawing controlled current from a DC source such as a USB port or DC output wall adapter. In On-The-Go mode this ...

Page 12

LTC4160/LTC4160-1 BLOCK DIAGRAM 12 41601fa ...

Page 13

OPERATION Introduction The LTC4160/LTC4160-1 are high efficiency bidirectional switching power managers and Li-Ion/Polymer battery chargers designed to make optimal use of the power available while minimizing power dissipation and easing thermal budgeting constraints. The innovative PowerPath architecture ensures that the ...

Page 14

LTC4160/LTC4160-1 OPERATION the programmed limit, CLPROG reaches 1.18V and power delivered by the switching regulator is held constant. The input current limit is programmed by the I I pins. The input current limit has four possible set- LIM1 tings ranging ...

Page 15

OPERATION For very low-battery voltages, the battery charger acts like a load and, due to limited input power, its current will tend to pull V below the 3.6V instant-on voltage. To prevent OUT V from falling below this level, an ...

Page 16

LTC4160/LTC4160-1 OPERATION TO USB 13 OR WALL ADAPTER V BUS V BUS VOLTAGE CONTROLLER I /N – SWITCH + 5.1V AVERAGE V BUS CLPROG CURRENT LIMIT – CONTROLLER 17 + 1.18V + ×2 1 – OVGATE 2 OVSENS OVERVOLTAGE PROTECTION ...

Page 17

OPERATION the voltage approximately 15mV (V OUT the voltage at BAT. Within the amplifier’s linear range, the small-signal resistance of the ideal diode will be quite low, keeping the forward drop near 15mV. At higher current levels, ...

Page 18

LTC4160/LTC4160-1 OPERATION the battery will eventually self discharge. To ensure that the battery is always topped off, a charge cycle will auto- matically begin when the battery voltage falls below the recharge threshold which is typically 100mV less than the ...

Page 19

OPERATION BAT < 2.85V CHARGE AT 100V/R (C/10 RATE) PROG RUN EVENT TIMER NO TIMER > 30 MINUTES YES INHIBIT CHARGING INDICATE BATTERY FAULT AT FAULT NO BAT > 2.85V YES Battery Charger Flow Chart POWER ON/ ENABLE CHARGER CLEAR ...

Page 20

LTC4160/LTC4160-1 OPERATION switching regulator is in On-The-Go mode. When a short circuit condition is detected, FAULT will go low-Z. The ENOTG or VBUSGD pins can be used to determine which fault has occurred. If ENOTG or VBUSGD is low when ...

Page 21

APPLICATIONS INFORMATION Bidirectional PowerPath Switching Regulator CLPROG Resistor and Capacitor Selection As described in the Bidirectional PowerPath Switching Regulator – Step-Down Mode section, the resistor on the CLPROG pin determines the average V limit. In step-down mode the switching regulator’s ...

Page 22

LTC4160/LTC4160-1 APPLICATIONS INFORMATION There are MLCCs available with several types of dielectrics each having considerably different characteristics. For example, X7R MLCCs have the best voltage and tempera- ture stability. X5R MLCCs have apparently higher packing density but poorer performance over ...

Page 23

APPLICATIONS INFORMATION current than is available will not cause the average input current limit to be violated. It will merely allow the battery charger to make use of all available power to charge the battery as quickly as possible, and ...

Page 24

LTC4160/LTC4160-1 APPLICATIONS INFORMATION Therefore, the hot trip point is set when: R NTCHOT • NTCBIAS = + R R NOM NTCHOT And the cold trip point is set when: R NTC COLD • NTCBIAS = NOM NTC ...

Page 25

APPLICATIONS INFORMATION LTC4160/LTC4160-1 NTCBIAS 3 NTC BLOCK 0.765 • NTCBIAS R – NOM 105k NTC + 4 R1 12.7k – R NTC T 100k 0.349 • NTCBIAS + + – 0.1V Figure 8. Modified NTC Configuration Hot Plugging and USB ...

Page 26

LTC4160/LTC4160-1 APPLICATIONS INFORMATION This same current pulse must not raise V than 2V when connected to a standard host which must have at least 96μF . The 96μF for a standard host represents the minimum capacitance with V BUS 5.25V. ...

Page 27

APPLICATIONS INFORMATION LTC4160/ LTC4160-1 ENOTG ON-THE-GO TRANSCEIVER B DEVICE Figure 11. Higher Frequency Ground Current Follow Their Incident Path. Slices in the Ground Plane Create Large Loop Areas. The Large Loop Areas Increase the Inductance of the Path Leading to ...

Page 28

LTC4160/LTC4160-1 TYPICAL APPLICATIONS Low Component Count Power Manager/Battery Charger with USB On-The-Go and Low Battery Start-Up ON-THE-GO USB WALL ADAPTER TO µC C1: MURATA GRM21BR7A106KE51L C3: TAYIO YUDEN JMK212BJ226MG L1: COILCRAFT LPS4018-332LM Low Component Count Switching Battery Charger with USB ...

Page 29

TYPICAL APPLICATIONS High Efficiency Power Manager/Battery Charger with USB On-The-Go, Overvoltage Protection and Low Battery Start-Up USB ON-THE-GO M1 USB WALL ADAPTER C1 22µF 0805 R1 6.2k TO µC C1, C3: TAYIO YUDEN JMK212BJ226MG L1: COILCRAFT LPS4018-332LM 100k M1: FAIRCHILD ...

Page 30

LTC4160/LTC4160-1 PACKAGE DESCRIPTION 3.50 ± 0.05 2.10 ± 0.05 1.50 REF 1.65 ± 0.05 0.25 ±0.05 0.50 BSC RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED PIN 1 TOP MARK (NOTE 6) 4.00 ...

Page 31

... LTC4160EPDC and LTC4160EPDC-1 designated obsolete in Order Information section Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 32

... Current and Float Voltage with Status Read Back, 4mm × 3mm 20-Pin QFN Package www.linear.com ● L1 3.3µH 14 SYSTEM LOAD 12 10k 22µF 11 10k 0805 + Li-Ion 21 10k RTC 1µF 41601 TA06 2 C Control of Input/Charge LT 1010 REV A • PRINTED IN USA  LINEAR TECHNOLOGY CORPORA TION 2009 TO µC 41601fa ...

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