LTC4050EMS-4.1#TR Linear Technology, LTC4050EMS-4.1#TR Datasheet

IC BATT CHRG CNTRL LI-ION 10MSOP

LTC4050EMS-4.1#TR

Manufacturer Part Number
LTC4050EMS-4.1#TR
Description
IC BATT CHRG CNTRL LI-ION 10MSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC4050EMS-4.1#TR

Function
Charge Management
Battery Type
Lithium-Ion (Li-Ion)
Voltage - Supply
4.5 V ~ 10 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
LTC4050EMS-4.1TR
LTC4050EMS4.1TR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC4050EMS-4.1#TRLTC4050EMS-4.1
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC4050EMS-4.1#TRLTC4050EMS-4.1
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
APPLICATIO S
TYPICAL APPLICATIO
*SHUTDOWN INVOKED BY FLOATING THE PROG PIN
0.1 F
Complete Standalone Linear Charger Controller
for 1-Cell Lithium-Ion Batteries
Thermistor Interface for Battery Temperature
Sensing
Preset Charge Voltage with 1% Accuracy
Programmable Charge Current
C/10 Charge Current Detection Output
Programmable Charge Termination Timer
Input Supply (Wall Adapter) Detection Output
4.5V to 10V Input Voltage Range
Automatic Sleep Mode When Input Supply
is Removed (Only 5 A Battery Drain)
Automatic Trickle Charging of Low Voltage Cells
Automatic Battery Recharge
Battery Insertion Detection
Space Saving 10-Pin MSOP Package
Cellular Phones
Handheld Computers
Charging Docks and Cradles
1k
1k
Single Cell 4.2V 500mA Li-Ion Battery Charger
10
3
4
CHRG
ACPR
TIMER
LTC4050-4.2
GND
5
V
CC
8
U
SENSE
NTC
PROG
DRV
BAT
2
9
7
1
6
*
19.6k
U
V
6V
IN
Si9430DY
0.2
I
MBRM120T3
10 F
BAT
= 500mA
+
4.2V
Li-Ion
CELL
1 F
4050 TA01
Charger with Thermistor Interface
T
10k NTC
DALE NTHS-1206N02
DESCRIPTIO
The LTC
constant-current/constant-voltage linear charge control-
lers for lithium-ion (Li-Ion) batteries. Charge current is
programmable and final float voltage has 1% accuracy.
When the input supply is removed, the LTC4050 automati-
cally enters a low quiescent current sleep mode, dropping
the battery drain current to 5 A. An internal comparator
detects the near-end-of-charge (C/10) condition while a
programmable timer, using an external capacitor, sets the
total charge time. Fully discharged cells are automatically
trickle charged at 10% of the programmed current until
cell voltage exceeds 2.49V. The thermistor interface
suspends charging if the cell temperature is outside of a
0 C to 50 C temperature window.
The LTC4050 begins a new charge cycle when a discharged
battery is connected to the charger or when the input power
is applied. In addition, a new charge cycle is automatically
started if the battery remains connected to the charger and
the cell voltage drops below 3.88V for 4.1V cells or below
3.98V for 4.2V cells.
The LTC4050 is available in the 10-pin MSOP package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Lithium-Ion Linear Battery
®
4050-4.1/LTC4050-4.2 are complete standalone
600
500
400
300
200
100
U
0
–50
V
BAT
–25
THERMISTOR TEMPERATURE ( C)
Thermistor Temperature
= 3.7V
Charge Current vs
0
25
50
LTC4050
75
100
4050 TA05
125
1
4050f

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LTC4050EMS-4.1#TR Summary of contents

Page 1

... In addition, a new charge cycle is automatically started if the battery remains connected to the charger and the cell voltage drops below 3.88V for 4.1V cells or below 3.98V for 4.2V cells. The LTC4050 is available in the 10-pin MSOP package. , LTC and LT are registered trademarks of Linear Technology Corporation MBRM120T3 0 ...

Page 2

... Internal Pull-Up Current PROG PROG Pin Source Current, V PROG R =19.6k PROG I = 5mA ACPR CHRG I = 5mA CHRG U W INFORMATION ORDER PART NUMBER TOP VIEW LTC4050EMS-4.1 10 ACPR LTC4050EMS-4.2 9 SENSE DRV 6 PROG MS PART MARKING MS PACKAGE LTTW = 140 C, = 180 C/W JA LTTX MIN TYP MAX 4.5 1.3 1 ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER I 10% Charge Current Indication Level C/10 t TIMER Accuracy TIMER V Recharge Threshold Voltage RECHRG Note 1: Absolute Maximum Ratings are those values beyond which the life of ...

Page 4

LTC4050 W U TYPICAL PERFOR A CE CHARACTERISTICS Recharge Threshold Voltage vs Temperature 4 LTC4050-4.2 4.0 LTC4050-4.1 3.9 3.8 3.7 –50 – 100 125 TEMPERATURE ( C) LTC4050 G07 Timer Accuracy vs ...

Page 5

PIN FUNCTIONS BAT (Pin 1): Battery Sense Input. A precision internal resistor divider on this pin sets the final float voltage. The resistor divider is disconnected in sleep mode to reduce the current drain on the battery. ...

Page 6

LTC4050 W BLOCK DIAGRA UV – 28.6k + NTC – CHRG 3 C/10 STOP RECHRG 32 A ACPR SHDN TIMER 4 ACPR – BATTERY CURRENT I = (2.47V • 800 )/(R BAT PROG 6 V ...

Page 7

U OPERATIO The LTC4050 is a linear battery charger controller. The charge current is programmed by the combination of a program resistor (R ) from the PROG pin to ground PROG and a sense resistor (R ) between the V ...

Page 8

LTC4050 U U APPLICATIONS INFORMATION Charger Conditions The charger is off when any of the following conditions exist: the voltage at the V pin is below 4V, the voltage at the V CC pin is greater than 4V but is ...

Page 9

U U APPLICATIONS INFORMATION CHRG Status Output Pin (C/10) When the charge cycle starts, the CHRG pin is pulled to ground by an internal N-channel MOSFET that can drive an LED. When the charge current drops to 10% of the ...

Page 10

LTC4050 U U APPLICATIONS INFORMATION If a PNP transistor is chosen as the pass transistor, a 1000pF capacitor is required from the DRV pin to V capacitor is needed to help stabilize the voltage loop capacitor at ...

Page 11

... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 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. ...

Page 12

... ThinSOT Li-Ion Linear Battery Charger Controller LTC1734L LTC4052 Li-Ion Linear Battery Pulse Charger LTC4053 USB Compatible Li-Ion Battery Charger ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 Linear Charger Using a PNP Transistor ...

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