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MAX17043X+T10

P1-P3P4-P6P7-P9P10-P12P13-P14
General Description
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
2
C
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.
Applications
Features
o Host-Side or Battery-Side Fuel Gauging
1 Cell (MAX17043)
2 Cell (MAX17044)
o Precision Voltage Measurement
±12.5mV Accuracy to 5.00V (MAX17043)
±30mV Accuracy to 10.00V (MAX17044)
o Accurate Relative Capacity (RSOC) Calculated
from ModelGauge Algorithm
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
Package or Tiny 0.4mm Pitch 9-Bump UCSP
Package
MAX17043/MAX17044
Compact, Low-Cost 1S/2S Fuel Gauges
with Low-Battery Alert
1
Ordering Information
Li+
PROTECTION
CIRCUIT
MAX17043
MAX17044
CELL
1µF
1kΩ
10nF
150Ω
GND
EP
CTG
SCL
SDA
QSTRT
V
DD
ALRT
SYSTEM
µP
I
2
C BUS
MASTER
INTERRUPT
4.7kΩ
Simplified Operating Circuit
19-4811; Rev 6; 8/12
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.
EVALUATION KIT
AVAILABLE
PART TEMP RANGE PIN-PACKAGE
MAX17043G+U -20°C to +70°C 8 TDFN-EP*
MAX17043G+T -20°C to +70°C 8 TDFN-EP*
MAX17043X+ -20°C to +70°C 9 UCSP
MAX17043X+T10
-20°C to +70°C 9 UCSP
MAX17044G+U -20°C to +70°C 8 TDFN-EP*
MAX17044G+T -20°C to +70°C 8 TDFN-EP*
MAX17044X+ -20°C to +70°C 9 UCSP
MAX17044X+T10
-20°C to +70°C 9 UCSP
+
Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*
EP = Exposed pad.
Smartphones
MP3 Players
Digital Still Cameras
Digital Video Cameras
Portable DVD Players
GPS Systems
Handheld and Portable
Applications
ModelGauge is a trademark of Maxim Integrated Products, Inc.
UCSP is a trademark of Maxim Integrated Products, Inc.
MAX17043/MAX17044
Compact, Low-Cost 1S/2S Fuel Gauges
with Low-Battery Alert
2
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(2.5V ≤ V
DD
≤ 4.5V, T
A
= -20°C to +70°C, unless otherwise noted. Contact Maxim for V
DD
greater than 4.5V.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Voltage on CTG Pin Relative to V
GND
....................-0.3V to +12V
Voltage on CELL Pin Relative to V
GND
...................-0.3V to +12V
Voltage on All Other Pins Relative to V
GND
..............-0.3V to +6V
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range
(T
A
= 0°C to +70°C (Note 10))........................-55°C to +125°C
Lead Temperature (TDFN soldering only, 10s) ...............+300°C
Soldering Temperature (reflow) .......................................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Active Current I
ACTIVE
50 75 µA
V
DD
= 2.0V 0.5 1.0
Sleep-Mode Current (Note 2) I
SLEEP
1 3
µA
V
DD
= 3.6V at +25°C -1 +1
T
A
= 0°C to +70°C (Note 10) -2 +2
Time-Base Accuracy t
ERR
T
A
= -20°C to +70°C -3 +3
%
T
A
= +25°C, V
IN
= V
DD
-12.5 +12.5
MAX17043 Voltage-
Measurement Error
-30 +30
mV
T
A
= +25°C, 5.0V < V
IN
< 9.0V -30 +30
MAX17044 Voltage-
Measurement Error
V
GERR
5.0 < V
IN
< 9.0 -60 +60
mV
CELL Pin Input Impedance R
CELL
15 M
Input Logic-High:
SCL, SDA, QSTRT
V
IH
(Note 1) 1.4 V
Input Logic-Low:
SCL, SDA, QSTRT
V
IL
(Note 1) 0.5 V
Output Logic-Low: SDA V
OL
I
OL
= 4mA (Note 1) 0.4 V
Output Logic-Low: AL RT V
OL-ALRT
I
OL-ALRT
= 2mA (Note 1) 0.4 V
Pulldown Current: SCL, SDA I
PD
V
DD
= 4.5V, V
PIN
= 0.4V 0.2 µA
Input Capacitance: SCL, SDA C
BUS
50 pF
Bus Low Timeout t
SLEEP
(Note 3) 1.75 2.5 s
Mode Transition t
TRAN
(Note 4) 1 ms
ELECTRICAL CHARACTERISTICS RECOMMENDED DC OPERATING CONDITIONS
(2.5V ≤ V
DD
≤ 4.5V, T
A
= -20°C to +70°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage V
DD
(Note 1) +2.5 +4.5 V
Data I/O Pins
SCL, SDA,
QSTRT,
ALRT
(Note 1) -0.3 +5.5 V
MAX17043 CELL Pin V
CELL
(Note 1) -0.3 +5.0 V
MAX17044 CELL Pin V
CELL
(Note 1) -0.3 +10.0 V
MAX17043/MAX17044
Compact, Low-Cost 1S/2S Fuel Gauges
with Low-Battery Alert
3
Note 1: All voltages are referenced to GND.
Note 2: SDA, SCL = GND; QSTRT, ALRT idle.
Note 3: The MAX17043/MAX17044 enter Sleep mode 1.75s to 2.5s after (SCL < V
IL
) AND (SDA < V
IL
).
Note 4: Time to enter sleep after Sleep command is sent. Time to exit sleep on rising edge of SCL or SDA.
Note 5: f
SCL
must meet the minimum clock low time plus the rise/fall times.
Note 6: The maximum t
HD:DAT
has only to be met if the device does not stretch the low period (t
LOW
) of the SCL signal.
Note 7: This device internally provides a hold time of at least 75ns for the SDA signal (referred to the V
IHMIN
of the SCL signal) to
bridge the undefined region of the falling edge of SCL.
Note 8: Filters on SDA and SCL suppress noise spikes at the input buffers and delay the sampling instant.
Note 9: C
B
—total capacitance of one bus line in pF.
Note 10: Applies to 8-pin TDFN-EP package type only.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SCL Clock Frequency f
SCL
(Note 5) 0 400 kHz
Bus Free Time Between a STOP
and START Condition
t
BUF
1.3 µs
Hold Time (Repeated)
START Condition
t
HD:STA
(Note 5) 0.6 µs
Low Period of SCL Clock t
LOW
1.3 µs
High Period of SCL Clock t
HIGH
0.6 µs
Setup Time for a Repeated
START Condition
t
SU:STA
0.6 µs
Data Hold Time t
HD:DAT
(Notes 6, 7) 0 0.9 µs
Data Setup Time t
SU:DAT
(Note 6) 100 ns
Rise Time of Both SDA
and SCL Signals
t
R
20 +
0.1C
B
300 ns
Fall Time of Both SDA
and SCL Signals
t
F
20 +
0.1C
B
300 ns
Setup Time for STOP Condition t
SU:STO
0.6 µs
Spike Pulse Widths Suppressed
by Input Filter
t
SP
(Note 8) 0 50 ns
Capacitive Load for Each
Bus Line
C
B
(Note 9) 400 pF
SCL, SDA Input Capacitance C
BIN
60 pF
ELECTRICAL CHARACTERISTICS: 2-WIRE INTERFACE
(2.5V ≤ V
DD
≤ 4.5V, T
A
= -20°C to +70°C.)
P1-P3P4-P6P7-P9P10-P12P13-P14

MAX17043X+T10

Mfr. #:
Buy MAX17043X+T10
Manufacturer:
Maxim Integrated
Description:
Battery Management 1S/2S Fuel Gauge
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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