MAX17043G+T Maxim Integrated Products, MAX17043G+T Datasheet - Page 9

• Manufacturer Part Number: MAX17043G+T
• Description: IC 2-WIRE FG MODEL GAUGE LO BATT
• Manufacturer: Maxim Integrated Products
• Series: ModelGauge™r

Specifications of MAX17043G+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+BTR

Writing SLEEP to logic 1 forces the ICs into Sleep
mode. Writing SLEEP to logic 0 forces the ICs to exit
Sleep mode. The power-up default value for SLEEP is
logic 0.
This bit reads as either a logic 0 or logic 1. This bit cannot
be written.
This bit is set by the IC when the SOC register value
falls below the alert threshold setting and an interrupt is
generated. This bit can only be cleared by software.
The power-up default value for ALRT is logic 0.
Figure 5. CONFIG Register Format
Table 3. COMMAND Register Commands
Table 4. Possible Application Configurations
SYSTEM CONFIGURATION
R C OM P
MSB
VALUE
1S Host-Side Location,
1S Host-Side Location,
2S Host-Side Location,
2S Host-Side Location,
2
5400h
1S Pack-Side Location
2S Pack-Side Location
1S Host-Side Location
2S Host-Side Location
Hardware Quick-Start
Hardware Quick-Start
7
Low Cell Interrupt
Low Cell Interrupt
R C OM P
2
6
COMMAND
R C OM P
_______________________________________________________________________________________
2
POR
5
MSB—ADDRESS 0Ch
Compact, Low-Cost 1S/2S Fuel Gauges
R C OM P
2
4
See the Power-On Reset
(POR) section.
MAX17043
MAX17043
MAX17043
MAX17043
MAX17044
MAX17044
MAX17044
MAX17044
ALRT (ALERT Flag)
R C OM P
SLEEP (Sleep Bit)
2
3
IC
DESCRIPTION
X (Don't Care)
R C OM P
2
2
Power from +2.5V to +4.5V
Power from +2.5V to +4.5V
Power from +2.5V to +4.5V
Power from +2.5V to +4.5V
Power directly from battery
Power directly from battery
Power directly from battery
Power directly from battery
R C OM P
2
1
LDO or PMIC
LDO or PMIC
LDO or PMIC
LDO in pack
R C OM P
V
LSB
2
DD
0
The alert threshold is a 5-bit value that sets the state of
charge level where an interrupt is generated on the
ALRT pin. The alert threshold has an LSb weight of 1%
and can be programmed from 1% up to 32%. The
threshold value is stored in two’s-complement form
(00000 = 32%, 00001 = 31%, 00010 = 30%, 11111 =
1%). The power-up default value for ATHD is 4% or 1Ch.
The COMMAND register allows the host processor to
send special commands to the IC. Valid COMMAND
register write values are listed as follows. All other
COMMAND register values are reserved. Table 3
shows COMMAND register commands.
The MAX17043/MAX17044 have a variety of configura-
tions, depending on the application. Table 4 shows the
most common system configurations and the proper
pin connections for each.
with Low-Battery Alert
SLEEP X
MSB
ATHD UNITS: 1 LSB = 2’S COMPLEMENT 1%
Leave unconnected
Leave unconnected
Leave unconnected
Leave unconnected
Leave unconnected
Leave unconnected
Connect to system
Connect to system
ALRT
ATHD RANGE: 11111b = 1%
interrupt
interrupt
ALRT
LSB—ADDRESS 0Dh
Application Examples
ATHD
00000b = 32%
2
4
COMMAND Register
ATHD (Alert Threshold)
ATHD
2
3
Connect to rising-edge
Connect to rising-edge
ATHD
2
Connect to GND
Connect to GND
Connect to GND
Connect to GND
Connect to GND
Connect to GND
2
reset signal
reset signal
QSTRT
ATHD
2
1
ATHD
LSB
2
0
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