MAX17044X+U Maxim Integrated, MAX17044X+U Datasheet

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MAX17044X+U

Manufacturer Part Number
MAX17044X+U
Description
Battery Management
Manufacturer
Maxim Integrated
Series
MAX17043, MAX17044r
Datasheet

Specifications of MAX17044X+U

Rohs
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The MAX17043/MAX17044 are ultra-compact, low-cost,
host-side fuel-gauge systems for lithium-ion (Li+) batter-
ies in handheld and portable equipment. The MAX17043
is configured to operate with a single lithium cell and the
MAX17044 is configured for a dual-cell 2S pack.
The MAX17043/MAX17044 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 MAX17043/MAX17044 are available in
either a 0.4mm pitch 9-bump UCSP™ or 2mm x 3mm,
8-pin TDFN lead-free package.
19-4811; Rev 6; 8/12
ModelGauge is a trademark of Maxim Integrated Products, Inc.
UCSP is a trademark of Maxim Integrated Products, Inc.
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.
Smartphones
MP3 Players
Digital Still Cameras
Digital Video Cameras
Compact, Low-Cost 1S/2S Fuel Gauges
General Description
Portable DVD Players
GPS Systems
Handheld and Portable
Applications
PROTECTION
CIRCUIT
Li+
Applications
1µF
1kΩ
CELL
QSTRT
CTG
GND
2
MAX17043
MAX17044
C
EP
ALRT
SDA
V
SCL
DD
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 External Alarm/Interrupt for Low-Battery Warning
o 2-Wire Interface
o Low Power Consumption
o Tiny, Lead(Pb)-Free, 8-Pin, 2mm x 3mm TDFN
with Low-Battery Alert
+ Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
* EP = Exposed pad.
MAX17043G+U
MAX17043G+T
MAX17043X+
MAX17043X+T10
MAX17044G+U
MAX17044G+T
MAX17044X+
MAX17044X+T10
from ModelGauge Algorithm
Package or Tiny 0.4mm Pitch 9-Bump UCSP
Package
150Ω
1 Cell (MAX17043)
2 Cell (MAX17044)
±12.5mV Accuracy to 5.00V (MAX17043)
±30mV Accuracy to 10.00V (MAX17044)
10nF
PART
4.7kΩ
Simplified Operating Circuit
INTERRUPT
I
MASTER
2
C BUS
SYSTEM
µP
Ordering Information
-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
PIN-PACKAGE
8 TDFN-EP*
8 TDFN-EP*
9 UCSP
9 UCSP
8 TDFN-EP*
8 TDFN-EP*
9 UCSP
9 UCSP
Features
1

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MAX17044X+U Summary of contents

Page 1

... Digital Still Cameras Handheld and Portable Applications Digital Video Cameras ModelGauge is a trademark of Maxim Integrated Products, Inc. UCSP is a trademark of Maxim Integrated Products, Inc. Li+ PROTECTION CIRCUIT 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. ...

Page 2

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

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) START Condition ...

Page 4

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

Page 5

Compact, Low-Cost 1S/2S Fuel Gauges TOP VIEW SDA SCL QSTRT ALRT MAX17043 MAX17044 + CTG CELL V GND DD TDFN (2mm × 3mm) PIN NAME UCSP TDFN Serial Data Input/Output. Open-drain 2-wire data line. ...

Page 6

Compact, Low-Cost 1S/2S Fuel Gauges with Low-Battery Alert SDA LOW R SCL t HD:STA t HD:DAT S Figure 1. 2-Wire Bus Timing Diagram Detailed Description Figure 1 shows the 2-wire bus timing diagram, and Figure 2 ...

Page 7

Compact, Low-Cost 1S/2S Fuel Gauges When the battery is first inserted into the system, there is no previous knowledge about the battery’s SOC. The IC assumes that the battery has been in a relaxed state for the previous 30min. The ...

Page 8

Compact, Low-Cost 1S/2S Fuel Gauges with Low-Battery Alert VCELL Register Battery voltage is measured at the CELL pin input with respect to GND over 5.00V range for the MAX17043 and 0 to 10.00V for the MAX17044 with ...

Page 9

Compact, Low-Cost 1S/2S Fuel Gauges MSB—ADDRESS 0Ch MSB Figure 5. CONFIG ...

Page 10

Compact, Low-Cost 1S/2S Fuel Gauges with Low-Battery Alert BATTERY PROTECTION IC (Li+/POLYMER) Figure 6. MAX17043 Application Example with Alert Interrupt BATTERY PROTECTION IC (Li+/POLYMER) Figure 7. MAX17044 Application Example with Hardware Reset Figure 6 shows an example application for a ...

Page 11

Compact, Low-Cost 1S/2S Fuel Gauges 2-Wire Bus System The 2-wire bus system supports operation as a slave- only device in a single or multislave, and single or multi- master system. Slave devices can share the bus by uniquely setting the ...

Page 12

Compact, Low-Cost 1S/2S Fuel Gauges with Low-Battery Alert 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 The ...

Page 13

Compact, Low-Cost 1S/2S Fuel Gauges Read Data Protocol The read data protocol is used to read to register from the MAX17043/MAX17044 starting at the memory address specified by MAddr. Both register bytes must be read in the same transaction for ...

Page 14

... Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 14 _______________Maxim Integrated Products, Inc. 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 © 2012 Maxim Integrated Products Revision History ...

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