LTC1733EMSE Linear Technology, LTC1733EMSE Datasheet

IC CHRGR BATT MONO THERML 10MSOP

LTC1733EMSE

Manufacturer Part Number
LTC1733EMSE
Description
IC CHRGR BATT MONO THERML 10MSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1733EMSE

Function
Charge Management
Battery Type
Lithium-Ion (Li-Ion)
Voltage - Supply
4.5 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
Other names
Q1460135

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FEATURES
APPLICATIO S
TYPICAL APPLICATIO
Complete Linear Charger for 1-Cell Lithium-Ion
Batteries
Thermal Regulation Maximizes Charging Rate
without Risk of Overheating*
No External MOSFET, Sense Resistor or Blocking
Diode Required
Up to 1.5A Charge Current
Preset Charge Voltage with 1% Accuracy
Programmable Charge Current with 7% Accuracy
Programmable Charge Termination Timer
Tiny Thermally Enhanced 10-Pin MSOP Package
Charge Current Monitor Useful for Gas Gauging*
C/10 Charge Current Detection Output
Automatic Recharge
Thermistor Input for Temperature Qualified Charging
AC Present Logic Output
4.1V/4.2V Pin Selectable Output Voltage
Cellular Telephones
Handheld Computers
Digital Still Cameras
Charging Docks and Cradles
*AN OUTPUT CAPACITOR MAY BE REQUIRED
DEPENDING ON BATTERY LEAD LENGTH
Standalone Li-Ion Battery Charger
4.7 F
0.1 F
4
U
TIMER
GND
SEL
LTC1733
5
8
V
IN
V
PROG
NTC
CC
= 5V
BAT
2
6
9
7
U
1733TA01
I
1.5k
1%
BAT
= 1A
4.2V
1-CELL
Li-Ion
BATTERY*
Lithium-Ion Battery Charger with
DESCRIPTIO
The LTC
constant-voltage linear charger for lithium-ion batteries
with an on-chip power MOSFET. Internal thermal feedback
regulates the charge current to limit die temperature
during high power operation or high ambient temperature
conditions. This feature allows the user to program a high
charge current without risk of damaging the LTC1733 or
the handheld product.
No external current sense resistor is needed and no
blocking diode is required due to the internal MOSFET
architecture. The charge current and charge time can be
set externally with a single resistor and capacitor, respec-
tively. When the input supply (wall adapter) is removed,
the LTC1733 automatically enters a low current sleep
mode, dropping the battery drain current to less than 5 A.
The LTC1733 also includes NTC temperature sensing,
C/10 detection circuitry, AC present logic, 4.1V/4.2V pin
selectability and low battery charge conditioning (trickle
charging).
The LTC1733 is available in a 10-pin thermally enhanced
MSOP package.
*Patent Pending
, LTC and LT are registered trademarks of Linear Technology Corporation.
1200
1000
®
800
600
400
200
1733 is a standalone constant-current/
0
2
Charge Current vs Battery Voltage
TRICKLE
CHARGE
Thermal Regulation
T
A
2.5
= 0 C
U
Monolithic Linear
CONSTANT
POWER
BATTERY VOLTAGE (V)
V
JA
IN
3
T
= 5V
= 40 C/W
A
= 25 C
CONSTANT
CURRENT
3.5
CONSTANT
T
VOLTAGE
A
= 40 C
4
LTC1733
4.5
1733 TA01b
sn1733 1733fs
1

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LTC1733EMSE Summary of contents

Page 1

... The LTC1733 also includes NTC temperature sensing, C/10 detection circuitry, AC present logic, 4.1V/4.2V pin selectability and low battery charge conditioning (trickle charging). The LTC1733 is available in a 10-pin thermally enhanced MSOP package. , LTC and LT are registered trademarks of Linear Technology Corporation. *Patent Pending 1200 1000 800 I ...

Page 2

... BAT PROG V Rising BAT V Rising CC PROG Pin Voltage Rising - V ) Voltage Falling CC BAT ( Voltage Rising CC BAT ORDER PART NUMBER 10 ACPR 9 BAT 8 SEL LTC1733EMSE 7 PROG 6 NTC MSE PART MARKING LTLX MIN TYP MAX UNITS 4 4.059 4.1 4.141 V 4.158 4.2 4.242 V 465 ...

Page 3

ELECTRICAL CHARACTERISTICS 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 Output Low Voltage FAULT I End of ...

Page 4

LTC1733 W U TYPICAL PERFOR A CE CHARACTERISTICS Battery Regulation Voltage vs Battery Charge Current 4. 4. SEL R = 1.5k PROG 4.20 4.18 4.16 4. ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS PROG Pin Voltage Constant Current Mode 1.515 3.5V BAT 1.510 PROG SEL 1.505 1.500 1.495 1.490 1.485 ...

Page 6

LTC1733 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 C/ LOGIC 10 ACPR ACPR 3 FAULT FAULT CHARGE COUNTER OSCILLATOR 2.485V 4 TIMER C TIMER W ...

Page 8

LTC1733 U OPERATIO The LTC1733 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

LTC1733 U U APPLICATIO S I FOR ATIO Open-Drain Status Outputs The LTC1733 has three open-drain status outputs: ACPR, CHRG and FAULT. The ACPR pin pulls low when an input voltage greater than the undervoltage lockout threshold is applied and ...

Page 11

U U APPLICATIO S I FOR ATIO resistance of the NTC thermistor rises. The LTC1733 is designed to go into hold mode when the value of the NTC thermistor increases to seven times the value Vishay NTHS0603N02N1002J ...

Page 12

LTC1733 U U APPLICATIO S I FOR ATIO If a thermistor with a tolerance less than 10% is used, the trip point errors begin to depend on errors other than thermistor tolerance including the input offset voltage of the internal ...

Page 13

U U APPLICATIO S I FOR ATIO 105 C – BAT ( 5 V – )• Furthermore, the voltage at the PROG pin will change proportionally with the charge ...

Page 14

LTC1733 U TYPICAL APPLICATIO Basic Li-Ion Battery Charger with Reverse Polarity Input Protection 5V WALL ADAPTER BAT LTC1733 BAT CC 8 SEL + 4.2V Li-Ion 4.7 F BATTERY 4 7 TIMER PROG GND ...

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 Charger Controller LTC1734 Lithium-Ion Linear Battery Charger in ThinSOT LTC1998 Lithium-Ion Low Battery Detector LTC4050 Lithium-Ion Linear Battery Charger Controller Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com Full Featured Single Cell Li-Ion Charger 1k ...

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