Details

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BUY bq2004 https://www.utsource.net/itm/p/12602820.html

Parameter	Description	Min	Typ	Max	Unit
Input Voltage (VIN)	Operating input voltage range	2.9	-	16	V
Output Voltage (VOUT)	Regulated output voltage	-	5.0	-	V
Output Current (IOUT)	Maximum continuous output current	-	1.0	1.5	A
Efficiency (畏)	Typical efficiency at nominal conditions	-	85	-	%
Quiescent Current (IQ)	Supply current during operation	1.5	-	3.0	mA
Shutdown Current (ISD)	Supply current in shutdown mode	-	1.0	-	渭A
Thermal Shutdown (TSD)	Temperature at which the device shuts down to prevent damage	-	-	150	掳C
Operating Temperature (TOPR)	Range of ambient temperatures for normal operation	-40	-	85	掳C
Storage Temperature (TSTG)	Range of temperatures for storage	-65	-	150	掳C

Instructions for Using the bq2004

1. Power Supply Connection:

   • Connect the input power supply to the VIN and GND pins. Ensure the input voltage is within the specified range (2.9V to 16V).

2. Output Configuration:

   • The regulated output voltage is fixed at 5.0V. Connect the load between the VOUT and GND pins.

3. Current Limiting:

   • The maximum continuous output current is 1.5A. For loads requiring more than 1.0A, ensure proper heat dissipation to avoid overheating.

4. Thermal Management:

   • The device will automatically shut down if the temperature exceeds 150掳C to prevent damage. Use a heatsink or ensure adequate airflow for high current applications.

5. Shutdown Mode:

   • To enter shutdown mode, pull the SHDN pin low. The device will draw less than 1.0渭A of current in this mode.

6. Operating and Storage Temperature:

   • Operate the device within the temperature range of -40掳C to 85掳C for optimal performance. Store the device between -65掳C and 150掳C.

7. Efficiency:

   • The typical efficiency is 85% under nominal conditions. Optimize the input voltage and load to achieve the best efficiency.

8. Quiescent Current:

   • The quiescent current during operation is typically 1.5mA to 3.0mA. This should be considered when designing low-power systems.

9. Protection Features:

   • The device includes overvoltage, overcurrent, and thermal protection to ensure safe operation under various conditions.

10. Layout Considerations:

    • Use short, wide traces for power connections to minimize resistance and inductance. Place decoupling capacitors close to the input and output pins to filter noise.

11. Testing:

    • Before finalizing the design, test the device under various operating conditions to ensure it meets the required specifications.

(For reference only)