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MPF42791 Datasheet(PDF) 5 Page - Monolithic Power Systems

Part # MPF42791
Description  2 to 16 Stacked Cells Battery Pack Fuel Gauge with Resistance Detection and Thermal Model
PDF  75 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MPF42791 Datasheet(HTML) 5 Page - Monolithic Power Systems

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MPF42791 – 2 TO 16 BATTERY PACK FG W/ R DETECTION AND THERMAL MODEL
MPF42791 Rev. 1.0
MonolithicPower.com
5
9/19/2022
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2022 MPS. All Rights Reserved.
PIN FUNCTIONS
Pin #
Name
I/O
Description
1
PB
I
Push-button. Triggers state-of-charge (SOC) LED indicator.
2
LED1
O
LED 1 driver. The LED1 pin reports the SOC
with a 330Ω resistor in series.
3
LED2
O
LED 2 driver. The LED2 pin reports the SOC with a
330Ω resistor in series.
4
LED3
O
LED 3 driver. The LED3 pin reports the SOC
with a 330Ω resistor in series.
5
LED4
O
LED 4 driver. The LED4 pin reports the SOC
with a 330Ω resistor in series.
6
LED5
O
LED 5 driver. The LED5 pin reports the SOC with a
330Ω resistor in series.
7
NC
-
No connection.
8
NC
-
No connection.
9
LDO
Power
Internal LDO. Bypass the LDO pin with a 2.2
μF + 100nF ceramic capacitor
connected to ground.
10
VDD
Power
Power supply input. Bypass VDD with a 2.2
μF ceramic capacitor connected to
ground.
11
GND
Power
Ground pin.
12
nRST
I
IC reset control.
13
NC
-
No connection.
14
NC
-
No connection.
15
CE
I
Chip enabled. Set the CE pin to stop fuel gauge updates and disable the
communication interface to minimize current consumption.
16
NC
-
No connection.
17
NC
-
No connection.
18
NC
-
No connection.
19
NC
-
No connection.
20
NC
-
No connection.
21
NC
-
No connection.
22
NC
-
No connection.
23
SCL
I/O
I2C interface clock. Connect the SCL pin
to the logic rail through a 10kΩ resistor.
24
SDA
I/O
I2C interface data. Connect the SDA pin
to the logic rail through a 10kΩ resistor.
25
IRQ
O
Interrupt request pin. The IRQ pin is the interrupt going to the host system(s).
26
NC
-
No connection.
27
NC
-
No connection.
28
CHSL
I
Channel selection. The CHSL pin selects which I2C channel is capable of writing
data into the fuel gauge memory. Pull CHSL high to write data using the secondary
I2C.
29
SCLMON
I/O
Secondary I2C interface clock. Connect the SCLMON pin to the logic rail through
a 10kΩ resistor.
30
SDAMON
I/O
Secondary I2C interface data. Connect the SDAMON pin to the logic rail through a
10kΩ resistor.
31
VCC
Power
3V to 3.3V power supply input. Bypass the VCC pin with a 2.2µF ceramic capacitor
connected to ground.
32
GND
Power
Ground pin.
33
GND
Power
Ground pin.



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