Details

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BUY BQ24738RGRR https://www.utsource.net/itm/p/12591367.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Input Voltage	VIN	4.0	5.0	14.0	V	Operating input voltage range
Charging Current	ICHG	0.1	3.0	5.0	A	Maximum charging current
Battery Float Voltage	VFB	3.5	4.2	4.4	V	Battery float voltage set point
Pre-charge Current	ITRK	0.1	0.5	1.0	A	Pre-charge current
Charge Termination Current	ITERM	0.01	0.1	0.2	A	Charge termination current
Thermal Regulation	TREG	-40	25	125	°C	Temperature range for thermal regulation
Efficiency (Typical)	η	-	90	-	%	Typical efficiency at nominal conditions
Quiescent Current	IQ	0.01	0.05	0.1	mA	Quiescent current during operation
Shutdown Current	ISD	0.001	0.005	0.01	μA	Shutdown current
Operating Temperature	TOPR	-40	25	85	°C	Operating temperature range
Storage Temperature	TSTG	-40	25	125	°C	Storage temperature range

Instructions for BQ24738RGRR

1. Power Supply Connection:

   • Connect the input power supply to the VIN pin.
   • Ensure the input voltage is within the specified range (4.0V to 14.0V).

2. Battery Connection:

   • Connect the battery to the BATT pin.
   • Ensure the battery voltage is compatible with the VFB setting.

3. Charging Configuration:

   • Set the charging current (ICHG) using an external resistor or through the I2C interface.
   • Set the battery float voltage (VFB) to the desired level for the battery type.

4. Pre-charge and Termination:

   • Configure the pre-charge current (ITRK) for initial charging of deeply discharged batteries.
   • Set the charge termination current (ITERM) to prevent overcharging.

5. Thermal Regulation:

   • Monitor the device temperature to ensure it stays within the TREG range.
   • Use external heat sinks if necessary to maintain safe operating temperatures.

6. Efficiency Monitoring:

   • Measure the efficiency (η) under typical operating conditions to ensure optimal performance.

7. Quiescent and Shutdown Currents:

   • Minimize quiescent current (IQ) to reduce power loss during operation.
   • Use the shutdown mode to minimize power consumption when not in use.

8. Temperature Management:

   • Ensure the device operates within the specified temperature range (TOPR).
   • Store the device within the storage temperature range (TSTG) to avoid damage.

9. I2C Communication:

   • Use the I2C interface to configure and monitor the charger parameters.
   • Refer to the datasheet for specific I2C commands and registers.

10. Safety Considerations:

    • Always follow safety guidelines to prevent damage to the device and the battery.
    • Use appropriate fuses and protection circuits to safeguard against overvoltage and short circuits.

(For reference only)