LTC4053EMSE-4.2 Linear Technology, LTC4053EMSE-4.2 Datasheet

IC CHARGER BATTERY USB 10-MSOP

LTC4053EMSE-4.2

Manufacturer Part Number
LTC4053EMSE-4.2
Description
IC CHARGER BATTERY USB 10-MSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC4053EMSE-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
10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

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Manufacturer
Quantity
Price
Part Number:
LTC4053EMSE-4.2
Manufacturer:
LT
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5 321
Part Number:
LTC4053EMSE-4.2
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LINEAR/凌特
Quantity:
20 000
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LTC4053EMSE-4.2#PBF
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LTC4053EMSE-4.2#TR
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Quantity:
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Part Number:
LTC4053EMSE-4.2#TRPBF
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LT/凌特
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20 000
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LTC4053EMSE-4.2#TRPBF
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LINEAR
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7 184
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
4.35V TO 5.5V
Charges Single-Cell Li-Ion Batteries Directly from
USB Port
Thermal Regulation Maximizes Charge Rate
without Risk of Overheating*
Programmable Charge Current with ±7% Accuracy
Low Dropout Operation
No External MOSFET, Sense Resistor or Blocking
Diode Required
Programmable Charge Termination Timer
Preset Charge Voltage with ±1% Accuracy
C/10 Charge Current Detection Output
AC Present Logic Output
25µA Supply Current in Shutdown Mode
Automatic Recharge
Charge Current Monitor Useful for Gas Gauging
Thermistor Input for Temperature Qualified Charging
Available in 10-pin thermally enhanced MSOP and
low profile (0.75mm) 3mm × 3mm DFN packages
Cellular Telephones
Handheld Computers
Charging Docks and Cradles
MP3 Players
Digital Cameras
USB PORT
USB Powered Standalone Li-Ion Charger
0.1µF
4.7µF
U
2
4
GND NTC
TIMER
V
CC
LTC4053-4.2
5
6
SHDN
PROG
BAT
15k
7
U
9
8
3.74k
+
USB CONTROL
Li-Ion
BATTERY
SUSPEND
SYSTEM
LOAD
µC
100mA/
500mA
4053TA01
Lithium-Ion Battery Charger
DESCRIPTIO
The LTC
ion batteries that can be powered directly from a USB port.
The IC contains an on-chip power MOSFET and eliminates
the need for an external sense resistor and blocking diode.
Thermal regulation automatically adjusts charge current
to limit die temperature during high power or high ambient
temperature conditions. This feature protects the end
product and the LTC4053 from thermal stress while the IC
charges the battery at maximum rate without interruption.
The charge current and charge time can be set externally
with a single resistor and capacitor, respectively. When
the input supply (wall adapter or USB supply) is removed,
the LTC4053 automatically enters a low current sleep
mode, dropping the battery drain current to less than 5µA.
The LTC4053 also includes NTC temperature sensing,
C/10 detection circuitry, AC present logic, low battery
charge conditioning (trickle charging) and shutdown (25µA
supply current).
The LTC4053 is available in 10-pin thermally enhanced
MSOP and low profile (0.75mm) DFN packages.
Protected by U.S. Patents including 6522118, 6700364.
, LTC and LT are registered trademarks of Linear Technology Corporation.
with Thermal Regulation
®
4053 is a standalone linear charger for lithium-
600
500
400
300
200
100
0
4.0
Charge Current vs Input Voltage
V
BAT
V
= 3.95V
BAT
U
V
= 4.15V
USB Compatible
4.5
BAT
= 4.05V
V
CC
(V)
5.0
LTC4053-4.2
T
R
A
PROG
= 25°C
= 3k
4053 G04
5.5
4053fa
1

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LTC4053EMSE-4.2 Summary of contents

Page 1

... C/10 detection circuitry, AC present logic, low battery charge conditioning (trickle charging) and shutdown (25µA supply current). The LTC4053 is available in 10-pin thermally enhanced MSOP and low profile (0.75mm) DFN packages. , LTC and LT are registered trademarks of Linear Technology Corporation. Protected by U.S. Patents including 6522118, 6700364. 9 SYSTEM LOAD ...

Page 2

... Rising BAT V Rising CC SHDN Pin Voltage - V ) High to Low CC BAT ( Low to High CC BAT ORDER PART TOP VIEW NUMBER 10 ACPR 9 BAT LTC4053EMSE-4 SHDN 7 PROG 6 NTC MSE PART MARKING = 40°C/W (NOTE 4) JA LTZT MIN TYP MAX ● 4.25 ● = 30k (Note 5) 1 ● 25 ● ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER V PROG Pin Voltage PROG I CHRG Pin Weak Pulldown Current CHRG V CHRG Pin Output Low Voltage CHRG V ACPR Pin Output Low Voltage ACPR V FAULT Pin ...

Page 4

LTC4053-4 TYPICAL PERFOR A CE CHARACTERISTICS Battery Regulation Voltage vs Battery Charge Current 4. 25° PROG 4.20 4.19 4.18 4.17 4. 100 150 200 250 ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS PROG Pin Voltage vs Charge Current 1 25°C 1 PROG 1.2 1.0 0.8 0.6 0.4 0 100 150 200 250 ...

Page 6

LTC4053-4 CTIO S CHRG: Open-Drain Charge Status Output. When the battery is being charged, the CHRG pin is pulled low by an internal N-channel MOSFET. When the charge current drops to 10% of the full-scale ...

Page 7

W SI PLIFIED BLOCK DIAGRA – 105° DIE NTC 6 NTC HOT COLD DISABLE CHRG 1 STOP SHDN C/10 30µA LOGIC 10 ACPR ACPR C/10 3 FAULT FAULT CHARGE COUNTER OSCILLATOR 2.485V 4 TIMER C TIMER W ...

Page 8

LTC4053-4.2 U OPERATIO The LTC4053 is a linear battery charger designed primarily for charging single cell lithium-ion batteries. Featuring an internal P-channel power MOSFET, the charger uses a constant-current/constant-voltage charge algorithm with programmable current and a programmable timer for charge ...

Page 9

U U APPLICATIO S I FOR ATIO Undervoltage Lockout (UVLO) An internal undervoltage lockout circuit monitors the input voltage and keeps the charger in shutdown mode until V rises above the undervoltage lockout threshold. The UVLO circuit has a built-in ...

Page 10

LTC4053-4 APPLICATIO S I FOR ATIO Programming The Timer The programmable timer is used to terminate the charge cycle. The timer duration is programmed by an external capacitor at the TIMER pin. The total charge time is: Time ...

Page 11

U U APPLICATIO S I FOR ATIO + 400k LTC4053 2k 3 CHRG Figure 3. Microprocessor Interface full-scale current (C/10), the N-channel MOSFET is turned off and a 30µA current source is connected to the CHRG ...

Page 12

LTC4053-4 APPLICATIO S I FOR ATIO NTC Trip Point Errors When a 1% resistor is used for R HOT the 50°C trip point is determined by the tolerance of the NTC thermistor. A typical 10k NTC thermistor has ...

Page 13

U U APPLICATIO S I FOR ATIO Regardless of mode, the voltage at the PROG pin is proportional to the current being delivered to the battery. Power Dissipation The conditions that cause the LTC4053 to reduce charge current due to ...

Page 14

LTC4053-4 APPLICATIO S I FOR ATIO PROG pin. With no additional capacitance on the PROG pin, stability is acceptable with program resistor values as high as 50k. However, additional capacitance on this node reduces the maximum allowed program ...

Page 15

... 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 16

... Lithium-Ion Linear Battery Pulse Charger LTC4054 Standalone Lithium-Ion Linear Battery Charger in ThinSOT LTC4056 Standalone Lithium-Ion Linear Battery Charger Controller in ThinSOT ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● USB/Wall Adapter Power Li-Ion Battery Charger LTC4053-4 ...

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