Details

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BUY BQ24133RGYT https://www.utsource.net/itm/p/5882376.html
1.6-MHz Synchronous Switch-Mode Li-Ion and Li-Polymer Stand-Alone Battery Charger with Integrated MOSFETs and Power Path Selector

Parameter	Symbol	Min	Typical	Max	Unit	Description
Input Voltage	VIN	3.9		6.0	V	Operating input voltage range
Battery Voltage	VBAT	2.5		4.5	V	Operating battery voltage range
Charging Current	ICHG		500	1000	mA	Programmable charging current
Pre-charge Current	IPRE		100	500	mA	Programmable pre-charge current
Termination Current	ITERM		100	500	mA	Charging termination current
Thermal Regulation	TREG	80		120	掳C	Temperature at which thermal regulation begins
Charge Timer	TCHG		5	10	Hours	Maximum charge time before timer expires
Battery Temperature	TBAT	-20		60	掳C	Operating temperature range for battery
Quiescent Current	IQ		50	100	渭A	Quiescent current when charging is not active
Status Output	STAT				Logic	Status output indicating charging state (high/low)
Fault Detection	FAULT				Logic	Fault detection output (high/low)
Efficiency	畏		85	92	%	Charging efficiency at typical operating conditions

Instructions for BQ24133RGYT

1. Power Supply Connection:

   • Connect the input power source to the VIN pin.
   • Ensure the input voltage is within the specified range (3.9V to 6.0V).

2. Battery Connection:

   • Connect the battery to the VBAT pin.
   • Ensure the battery voltage is within the specified range (2.5V to 4.5V).

3. Programming Charging Current:

   • Set the charging current using an external resistor connected to the ICHG pin.
   • The formula to calculate the charging current is ( I_ = frac{1000 text{ k惟}}{R_} ).

4. Programming Pre-charge Current:

   • Set the pre-charge current using an external resistor connected to the IPRE pin.
   • The formula to calculate the pre-charge current is ( I_ = frac{1000 text{ k惟}}{R_} ).

5. Setting Termination Current:

   • Set the termination current using an external resistor connected to the ITERM pin.
   • The formula to calculate the termination current is ( I_ = frac{1000 text{ k惟}}{R_} ).

6. Thermal Regulation:

   • The device will automatically reduce the charging current if the temperature exceeds 80掳C to prevent overheating.

7. Charge Timer:

   • The device will terminate the charging process if the charge time exceeds the maximum set time (5 to 10 hours).

8. Status Monitoring:

   • Monitor the STAT pin to determine the charging state (high indicates charging, low indicates not charging).
   • Monitor the FAULT pin to detect any faults (high indicates fault, low indicates normal operation).

9. Quiescent Current:

   • The device consumes a small quiescent current when not actively charging to maintain system status.

10. Efficiency:

    • The charging efficiency is typically between 85% and 92%, depending on the operating conditions.

11. Safety Considerations:

    • Ensure the battery temperature is within the safe operating range (-20掳C to 60掳C).
    • Use appropriate heat dissipation measures if operating under high load conditions.

By following these instructions, you can ensure optimal performance and safety when using the BQ24133RGYT charger.

(For reference only)