LTC4150IMS#PBF Linear Technology, LTC4150IMS#PBF Datasheet

IC COUNTER/GAUGE GAS/BATT 10MSOP

LTC4150IMS#PBF

Manufacturer Part Number
LTC4150IMS#PBF
Description
IC COUNTER/GAUGE GAS/BATT 10MSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC4150IMS#PBF

Function
Fuel, Gas Gauge/Monitor
Battery Type
Li-Ion, NiCd, NiMH
Voltage - Supply
2.7 V ~ 8.5 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
Lead free / RoHS Compliant

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Company
Part Number
Manufacturer
Quantity
Price
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Part Number:
LTC4150IMS#PBFLTC4150IMS
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC4150IMS#PBFLTC4150IMS
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LTC4150IMS#PBFLTC4150IMS#3ZZPBF
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LT/凌特
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Company:
Part Number:
LTC4150IMS#PBFLTC4150IMS#TRPBF
Manufacturer:
LT/凌特
Quantity:
20 000
FEATURES
APPLICATIONS
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TYPICAL APPLICATION
4.7μF
Indicates Charge Quantity and Polarity
±50mV Sense Voltage Range
Precision Timer Capacitor or Crystal Not Required
2.7V to 8.5V Operation
High Side Sense
32.55Hz/V Charge Count Frequency
1.5μA Shutdown Current
10-Pin MSOP Package
Battery Chargers
Palmtop Computers and PDAs
Cellular Telephones and Wireless Modems
+
C
C
F
F
SENSE
+
R
SENSE
LTC4150
SENSE
GND
+
V
SHDN
DD
CLR
POL
INT
CHG
CHARGER
LOAD
4.7μF
DISCHG
R
L
R
L
4150 TA01a
μP
DESCRIPTION
The LTC
in handheld PC and portable product applications. The
device monitors current through an external sense resistor
between the battery’s positive terminal and the battery’s
load or charger. A voltage-to-frequency converter trans-
forms the current sense voltage into a series of output
pulses at the interrupt pin. These pulses correspond to a
fi xed quantity of charge fl owing into or out of the battery.
The part also indicates charge polarity as the battery is
depleted or charged.
The LTC4150 is intended for 1-cell or 2-cell Li-Ion and
3-cell to 6-cell NiCd or NiMH applications.
L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode are registered trademarks and
ThinSOT and PowerPath are trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners.
®
4150 measures battery depletion and charging
Battery Gas Gauge
Coulomb Counter/
–0.1
–0.2
–0.3
–0.4
–0.5
0.5
0.4
0.3
0.2
0.1
0
Integral Nonlinearity, % of Full Scale
–50
CURRENT SENSE VOLTAGE (mV)
–25
0
LTC4150
25
4150 TA01b
50
4150fc
1

Related parts for LTC4150IMS#PBF

LTC4150IMS#PBF Summary of contents

Page 1

... The LTC4150 is intended for 1-cell or 2-cell Li-Ion and 3-cell to 6-cell NiCd or NiMH applications. L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode are registered trademarks and ThinSOT and PowerPath are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...

Page 2

... LEAD FREE FINISH TAPE AND REEL LTC4150CMS#PBF LTC4150CMS#TRPBF LTC4150IMS#PBF LTC4150IMS#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER Power Supply Current I Supply Current, Operating DD I Supply Current, Shutdown DD(SD) AC Characteristics G Voltage to Frequency Gain VF Gain Variation with Supply ΔG VF(VDD) Gain ...

Page 4

LTC4150 TYPICAL PERFORMANCE CHARACTERISTICS Voltage to Frequency Gain vs Supply Voltage +1.00 +0.75 +0.50 +0. 25mV SENSE 50mV SENSE –0.25 –0.50 –0.75 –1. (V) DD 4150 G01 ...

Page 5

PIN FUNCTIONS + SENSE (Pin 1): Positive Sense Input. This is the nonin- verting current sense input. Connect SENSE and charger side of the sense resistor. Full-scale current + sense input is 50mV. SENSE must be within 60mV of V ...

Page 6

LTC4150 BLOCK DIAGRAM CHARGER LOAD SENSE 200k SENSE F 4 – 200k I BAT 2k 2 – S2 SENSE GND 7 TIMING DIAGRAMS CLR 50% ...

Page 7

OPERATION Charge is the time integral of current. The LTC4150 mea- sures battery current by monitoring the voltage developed across a sense resistor and then integrates this information in several stages to infer charge. The Block Diagram shows the stages ...

Page 8

LTC4150 APPLICATIONS INFORMATION SENSE VOLTAGE INPUT AND FILTERS Since the overall integration time is set by internally trim- ming the LTC4150, no external timing capacitor or trimming is necessary. The only external component that affects the transfer function of interrupts ...

Page 9

APPLICATIONS INFORMATION INT, POL and CLR INT asserts low each time the LTC4150 measures a unit of charge. At the same time, POL is latched to indicate the polarity of the charge unit. The integrator and counter continue running, so ...

Page 10

LTC4150 APPLICATIONS INFORMATION AUTOMATIC CHARGE COUNT INTERRUPT AND CLEAR In applications where a CLR pulse is unavailable, it’s easy to make the LTC4150 run autonomously, as shown in Figures 5 and 6. If the microcontroller V is less than or ...

Page 11

APPLICATIONS INFORMATION PC BOARD LAYOUT SUGGESTIONS Keep all traces as short as possible to minimize noise and inaccuracy. The supply bypass capacitor C2 should be placed close to the LTC4150. The 4.7μF fi lter capacitor + C should be placed ...

Page 12

LTC4150 PACKAGE DESCRIPTION 5.23 (.206) MIN 0.305 0.038 (.0120 .0015) TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR ...

Page 13

... Added Conditions to Power Supply Current in Electrical Characteristics 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 14

... Fresh, Use with the LTC4053, LTC1733, LTC4054 More Effi cient Diode OR’ing, Automatic Switching Between DC Sources, Simplifi ed Load Sharing, 3V ≤ V www.linear.com ● CD40110B CD40110B CD40110B CD40110B CD40110B 4150 F09 ≤ 28V IN LT 0210 REV C • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2003 4150fc ...

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