LTC4058EDD-4.2 Linear Technology, LTC4058EDD-4.2 Datasheet

IC CHARGER BATTERY LI-ION 8-DFN

LTC4058EDD-4.2

Manufacturer Part Number
LTC4058EDD-4.2
Description
IC CHARGER BATTERY LI-ION 8-DFN
Manufacturer
Linear Technology
Datasheet

Specifications of LTC4058EDD-4.2

Function
Charge Management
Battery Type
Lithium-Ion (Li-Ion)
Voltage - Supply
4.25 V ~ 6.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-WFDFN Exposed Pad
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC4058EDD-4.2
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LTC4058EDD-4.2#PBF
Manufacturer:
LT
Quantity:
7 500
Part Number:
LTC4058EDD-4.2#TRPBF
Manufacturer:
LT/凌特
Quantity:
20 000
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
Programmable Charge Current Up to 950mA
Complete Linear Charger in DFN Package
No MOSFET, Sense Resistor or Blocking Diode
Required
Thermal Regulation Maximizes Charge Rate
Without Risk of Overheating*
Battery Kelvin Sensing Improves Charging Accuracy
Charges Directly from a USB Port
C/10 Charge Termination
Preset 4.2V Charge Voltage with 1% Accuracy
Charge Current Monitor Output for Gas Gauging*
Automatic Recharge
Charge Status Output
“AC Present” Output
2.9V Trickle Charge Threshold (LTC4058)
Available Without Trickle Charge (LTC4058X)
Soft-Start Limits Inrush Current
Low Profile (3mm 3mm 0.75mm) DFN Package
Cellular Telephones, PDAs, MP3 Players
Bluetooth Applications
4.5V TO 6.5V
Single Cell Li-Ion Battery Charger with Kelvin Sense
V
IN
1 F
U
V
CHRG
ACPR
EN
LTC4058-4.2
CC
GND
BSENSE
PROG
BAT
U
600mA
1.65k
+
405842 TA01
1-CELL
Li-Ion
BATTERY
DESCRIPTIO
Li-Ion Battery Charger with
The LTC
voltage linear charger for single cell lithium-ion batteries.
Its DFN package and low external component count make
the LTC4058 ideally suited for portable applications. Fur-
thermore, the LTC4058 is designed to work within USB
power specifications.
The LTC4058 can Kelvin sense the battery terminal for
more accurate float voltage charging. No external sense
resistor or external blocking diode are required due to the
internal MOSFET architecture. Thermal feedback regu-
lates the charge current to limit the die temperature during
high power operation or high ambient temperature condi-
tions. The charge voltage is fixed at 4.2V and the charge
current is programmed with a resistor. The LTC4058
terminates the charge cycle when the charge current
drops to 10% of the programmed value after the final float
voltage is reached.
When the input supply (wall adapter or USB supply) is
removed, the LTC4058 enters a low current state dropping
the battery drain current to less than 2 A. Other features
include charge current monitor, undervoltage lockout,
automatic recharge and status pins to indicate charge
termination and the presence of an input voltage.
*US Patent 6,522,118
Thermal Regulation in DFN
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTC4058-4.2/LTC4058X-4.2
®
4058 is a complete constant-current/constant-
700
600
500
400
300
200
100
Complete Charge Cycle (750mAh Battery)
0
0
V
R
T
CC
JA
A
PROG
0.25
= 25 C
CONSTANT
CURRENT
= 40 C/W
= 5V
Standalone Linear
= 1.65k
0.5
U
0.75
TIME (HOURS)
1.0
1.25
1.5
CONSTANT
VOLTAGE
1.75
405842 TA02
2.0
2.25
4.75
4.50
4.25
4.00
3.75
3.50
3.25
3.00
sn405842 405842fs
1

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LTC4058EDD-4.2 Summary of contents

Page 1

... A. Other features include charge current monitor, undervoltage lockout, automatic recharge and status pins to indicate charge termination and the presence of an input voltage. , LTC and LT are registered trademarks of Linear Technology Corporation. *US Patent 6,522,118 600mA + 1-CELL ...

Page 2

... PROG CHG 500mA) PROG CHG R = 10k, Current Mode PROG I = 5mA CHRG I = 5mA ACPR V – FLOAT RECHRG ORDER PART NUMBER 8 EN LTC4058EDD-4.2 7 ACPR LTC4058XEDD-4 PROG DD PART MARKING LAEV LBDH MIN TYP MAX UNITS 4.25 6 200 500 4.158 4.2 4.242 ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER T Junction Temperature in Constant LIM Temperature Mode R Power FET “ON” Resistance ON (Between V and BAT Soft-Start Time SS t Recharge Comparator Filter Time RECHARGE ...

Page 4

LTC4058-4.2/LTC4058X-4 TYPICAL PERFOR A CE CHARACTERISTICS Regulated Output (Float) Voltage vs Charge Current 4. 4. 1.25k PROG 4.22 4.20 4.18 4.16 4.14 4.12 4.10 0 100 200 ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS Charge Current vs Supply Voltage 600 PROG 500 400 BAT BSENSE 300 C/W JA 200 R = 10k ...

Page 6

LTC4058-4.2/LTC4058X-4 CTIO S the voltage on this pin can be used to measure the charge current using the following formula • 1000 BAT PROG PROG This pin is clamped to ...

Page 7

U OPERATIO The LTC4058 is a single cell lithium-ion battery charger using a constant-current/constant-voltage algorithm. It can deliver up to 950mA of charge current (using a good thermal PCB layout) with a final float voltage accuracy of 1%. The LTC4058 ...

Page 8

LTC4058-4.2/LTC4058X-4.2 U OPERATIO POWER ON TRICKLE CHARGE EN DRIVEN LOW OR 1/10TH FULL CURRENT UVLO CONDITION STOPS CHRG: STRONG SHUTDOWN MODE CHARGE MODE I DROPS TO < FULL CURRENT CHRG: Hi-Z CHRG: STRONG STANDBY MODE NO CHARGE CURRENT ...

Page 9

U U APPLICATIO S I FOR ATIO Kelvin Sensing the Battery (BSENSE Pin) The internal P-channel MOSFET drain is connected to the BAT pin, while the BSENSE pin connects through an inter- nal precision resistor divider to the input of ...

Page 10

LTC4058-4.2/LTC4058X-4 APPLICATIO S I FOR ATIO The LTC4058 can be used above 52 C ambient but the charge current will be reduced from 800mA. The approxi- mate current at a given ambient temperature can be approximated by: 120 ...

Page 11

... PIN 1 TOP MARK 0.200 REF 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTC4058-4.2/LTC4058X-4 Figure 4 ...

Page 12

... Li-Ion Linear Battery Charger LTC4410 USB Power Manager TM LTC4412 Low Loss PowerPath Controller in ThinSOT ThinSOT and PowerPath are trademarks of Linear Technology Corporation. Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 Li-Ion Battery Charger with Reverse Polarity Input Protection 5V ...

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