MAX17040G+T Maxim Integrated Products, MAX17040G+T Datasheet

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MAX17040G+T

Manufacturer Part Number
MAX17040G+T
Description
IC 2-WIRE FG W/MODEL GAUGE
Manufacturer
Maxim Integrated Products
Series
ModelGauge™r
Datasheet

Specifications of MAX17040G+T

Function
Fuel, Gas Gauge/Monitor
Battery Type
Lithium-Ion (Li-Ion)
Voltage - Supply
2.5 V ~ 4.5 V
Operating Temperature
-20°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-TDFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
90-2771G+TRL
The MAX17040/MAX17041 are ultra-compact, low-cost,
host-side fuel-gauge systems for lithium-ion (Li+) batter-
ies in handheld and portable equipment. The MAX17040
is configured to operate with a single lithium cell and the
MAX17041 is configured for a dual-cell 2S pack.
The MAX17040/MAX17041 use a sophisticated Li+ bat-
tery-modeling scheme, called ModelGauge™ to track
the battery’s relative state-of-charge (SOC) continuously
over a widely varying charge/discharge profile. Unlike
traditional fuel gauges, the ModelGauge algorithm elim-
inates the need for battery relearn cycles and an exter-
nal current-sense resistor. Temperature compensation
is possible in the application with minimal interaction
between a µC and the device.
A quick-start mode provides a good initial estimate of
the battery’s SOC. This feature allows the IC to be
located on system side, reducing cost and supply
chain constraints on the battery. Measurement and esti-
mated capacity data sets are accessed through an I
interface. The MAX17040/MAX17041 are available in
either a 0.4mm pitch 9-bump UCSP™ or 2mm x 3mm,
8-pin TDFN lead-free package.
19-5210; Rev 5; 10/10
ModelGauge is a trademark of Maxim Integrated Products, Inc.
UCSP is a trademark of Maxim Integrated Products, Inc.
Pin Configurations appear at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Smart Phones
MP3 Players
Digital Still Cameras
Digital Video Cameras
________________________________________________________________ Maxim Integrated Products
Compact, Low-Cost 1S/2S Fuel Gauges
General Description
PROTECTION
CIRCUIT
Li+
Portable DVD Players
GPS Systems
Handheld and Portable
Applications
Applications
1µF
1kΩ
2
C
CELL
SEO
EO
CTG
GND
o Host-Side or Battery-Side Fuel Gauging
o Precision Voltage Measurement
o Accurate Relative Capacity (RSOC) Calculated
o No Offset Accumulation on Measurement
o No Full-to-Empty Battery Relearning Necessary
o No Sense Resistor Required
o 2-Wire Interface
o Low Power Consumption
o Tiny, Lead(Pb)-Free, 8-pin, 2mm x 3mm TDFN
+ Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
* EP = Exposed pad.
MAX17040G+U
MAX17040G+T
MAX17040X+U
MAX17040X+T10
MAX17041G+U
MAX17041G+T
MAX17041X+
MAX17041X+T10
MAX17040
MAX17041
from ModelGauge Algorithm
Package or Tiny 0.4mm Pitch 9-Bump UCSP
Package
EP
1 Cell (MAX17040)
2 Cell (MAX17041)
±12.5mV Accuracy to 5.00V (MAX17040)
±30mV Accuracy to 10.00V (MAX17041)
PART
SDA
SCL
V
DD
Simplified Operating Circuit
150Ω
10nF
-20°C to +70°C
-20°C to +70°C
-20°C to +70°C
-20°C to +70°C
-20°C to +70°C
-20°C to +70°C
-20°C to +70°C
-20°C to +70°C
TEMP RANGE
Ordering Information
I
MASTER
SYSTEM
2
C BUS
µP
PIN-PACKAGE
8 TDFN-EP*
8 TDFN-EP*
9 UCSP
9 UCSP
8 TDFN-EP*
8 TDFN-EP*
9 UCSP
9 UCSP
Features
1

Related parts for MAX17040G+T

MAX17040G+T Summary of contents

Page 1

... No Sense Resistor Required o 2-Wire Interface o Low Power Consumption o Tiny, Lead(Pb)-Free, 8-pin, 2mm x 3mm TDFN Package or Tiny 0.4mm Pitch 9-Bump UCSP Package 2 C PART MAX17040G+U MAX17040G+T Applications MAX17040X+U MAX17040X+T10 MAX17041G+U MAX17041G+T MAX17041X+ MAX17041X+T10 + Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. ...

Page 2

Compact, Low-Cost 1S/2S Fuel Gauges ABSOLUTE MAXIMUM RATINGS Voltage on CTG Pin Relative to GND .....................-0.3V to +12V Voltage on CELL Pin Relative to GND....................-0.3V to +12V Voltage on All Other Pins Relative to GND...............-0.3V to +6V Operating Temperature Range ...

Page 3

Compact, Low-Cost 1S/2S Fuel Gauges ELECTRICAL CHARACTERISTICS: 2-WIRE INTERFACE (2.5V ≤ V ≤ 4.5V -20°C to +70°C PARAMETER SYMBOL SCL Clock Frequency Bus Free Time Between a STOP and START Condition Hold Time (Repeated) t HD:STA ...

Page 4

Compact, Low-Cost 1S/2S Fuel Gauges (T = +25°C, unless otherwise noted.) A QUIESCENT CURRENT vs. SUPPLY VOLTAGE 100 +25° (V) DD SIMPLE C/4 RATE CYCLES SOC ACCURACY 100 ...

Page 5

Compact, Low-Cost 1S/2S Fuel Gauges PIN NAME UCSP TDFN Serial Data Input/Output. Open-drain 2-wire data line. Connect this pin to the DATA signal of the A1 8 SDA 2-wire interface. This pin has a 0.2µA typical pulldown to sense disconnection. ...

Page 6

Compact, Low-Cost 1S/2S Fuel Gauges compared to traditional coulomb counters, which suffer from SOC drift caused by current-sense offset and cell self-discharge. This model provides good performance for many Li+ chemistry variants across temperature and age. The MAX17040/MAX17041 have a ...

Page 7

Compact, Low-Cost 1S/2S Fuel Gauges Table 1. Register Summary ADDRESS REGISTER (HEX) 02h–03h VCELL Reports 12-bit A/D measurement of battery voltage. 04h–05h SOC Reports 16-bit SOC result calculated by ModelGauge algorithm. 06h–07h MODE Sends special commands to the IC. 08h–09h ...

Page 8

Compact, Low-Cost 1S/2S Fuel Gauges MODE Register The MODE register allows the host processor to send special commands to the IC (Figure 4). Valid MODE register write values are listed as follows. All other MODE register values are reserved. Table ...

Page 9

Compact, Low-Cost 1S/2S Fuel Gauges BATTERY PROTECTION IC (Li+/POLYMER) Figure 5. MAX17040 Application Example with External Clock BATTERY PROTECTION IC (Li+/POLYMER) Figure 6. MAX17041 Application Example with Hardware Reset 2-Wire Bus System The 2-wire bus system supports operation as a ...

Page 10

Compact, Low-Cost 1S/2S Fuel Gauges One data bit is transferred during each SCL clock cycle, with the cycle defined by SCL transitioning low to high and then high to low. The SDA logic level must remain stable during the high ...

Page 11

Compact, Low-Cost 1S/2S Fuel Gauges Table 5. 2-Wire Protocol Key KEY DESCRIPTION S START bit SAddr Slave address (7 bit) MAddr Memory address byte Data Data byte written by master A Acknowledge bit—master N No acknowledge—master Basic Transaction Formats Write: ...

Page 12

Compact, Low-Cost 1S/2S Fuel Gauges TOP VIEW SDA SCL MAX17040 MAX17041 + CTG CELL V GND DD TDFN (2mm × × 3mm) 12 ______________________________________________________________________________________ SEO BUMP SIDE DOWN 5 4 For the latest ...

Page 13

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2010 Maxim Integrated Products ...

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