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MAX77975 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX77975
Description  High-Efficiency Single-Cell Switching Charger
PDF  32 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX77975 Datasheet(HTML) 4 Page - Maxim Integrated Products

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Maxim Integrated │ 4
www.maximintegrated.com
Evaluates: MAX77975/MAX77976/
MAX77958
MAX77975/MAX77976
Evaluation Kits
Table 1. Jumper Connection and Switch Setting Guide (continued)
JUMPER
DEFAULT
CONNECTION
FEATURE
J5
1-2 (ROOM): Closed
3-4 (NTC): Open
5-6 (POT): Open
7-8 (ENTH): Closed
All Open: Disable thermistor.
Only 7-8 Closed: Enable thermistor function, connect pin 1 to the thermistor from the
battery pack to measure temperature directly at the battery.
1-2, 7-8 Closed: Enable thermistor function, a fixed 10kΩ pullup and pulldown
simulate a constant room temperature.
3-4, 7-8 Closed: Enable thermistor with temperature measurement from an NTC resistor
installed on EV kit.
5-6, 7-8 Closed: Enable thermistor with temperature measurement simulated with a
potentiometer R43.
Any other configuration: Do not configure.
J18
Open
Open: Disable external BATT to SYS FET circuit.
Close: Connect 100kΩ pullup for the external BATT to SYS FET circuit.
Need to connect J23 and J29.
J29
Open
Open: Disable external BATT to SYS FET circuit.
Close: Connect QBEXT pin to control external BATT to SYS FET circuit.
Need to connect J23 and J18.
J37
Open
Open: Default operation.
Closed: Force disconnect QBATT.
J13
Open
Open: Default operation.
Closed: Force SUSPEND = 1 to the charger.
J17
Open
Open: STAT pin LED indicator is disabled.
Closed: STAT pin LED indicator is enabled.
J7
2-3
Open: Do not configure.
1-2: VIO powered through EXTVIO with 1.8V external power supply.
2-3: VIO powered by USB Micro-B port connected to PC.
J9
Closed
Open: MAX77958 VCONN is not powered.
Closed: MAX77958 VCONN is powered by SYS.
J3
Closed
Open: MAX77958 is not connected to VBUS.
Closed: MAX77958 is connected to VBUS.
J16
Closed
Open: MAX77958 is not powered by SYS.
Closed: MAX77958 is powered by SYS.
J4
Open
Open: MAX77958 GPIO4 is not connected to MAX77975/MAX77976 IRQB.
Closed: MAX77958 GPIO4 is connected to MAX77975/MAX77976 IRQB.
Also, connect 1-2 on J15 for pullup.
J15
Open
Open: MAX77975/6 IRQB is not connected.
Close 1-2: MAX77975/6 connects to 100kΩ pullup to VIO
Close 3-4: IRQB LED indicator is enabled .
J30
Open
Open: MAX77958 slave address configured by J31, J32.
Closed: MAX77958 slave address is selected to be 0b0100110. Do not connect J31, J32.



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