Details

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BUY TEXAS INSTRUMENTS TPS54620RHLR https://www.utsource.net/itm/p/12612285.html

Parameter	Symbol	Min	Typ	Max	Unit
Input Voltage	VIN	4.5	-	18	V
Output Voltage Range	VOUT	0.8	-	5.5	V
Output Current	IOUT	-	6	-	A
Switching Frequency	fSW	-	700	-	kHz
Efficiency (Typical)	畏	-	94	-	%
Quiescent Current	IQ	-	110	-	渭A
Shutdown Current	ISD	-	1	-	渭A
Operating Temperature Range	TOPR	-40	-	125	掳C
Storage Temperature Range	TSTG	-65	-	150	掳C
Junction Temperature	TJ	-40	-	150	掳C
Package Type	PKG	-	-	-	3mm x 3mm QFN-16

Instructions for Using TPS54620RHLR

1. Input Capacitor Selection:

   • Use a ceramic capacitor with low ESR and X7R dielectric.
   • Typical value: 10 渭F to 22 渭F.

2. Output Capacitor Selection:

   • Use a ceramic capacitor with low ESR and X7R or X5R dielectric.
   • Typical value: 10 渭F to 47 渭F.

3. Inductor Selection:

   • Choose an inductor based on the desired output current and ripple current.
   • Typical value: 1.5 渭H to 4.7 渭H.

4. Feedback Resistor Network:

   • Set the output voltage using the feedback resistors R1 and R2.
   • VOUT = 0.8 * (1 + R1/R2).

5. Enable Pin:

   • The enable pin can be used to control the power-up and power-down sequences.
   • Connect to VCC for continuous operation or use an external signal for control.

6. Thermal Considerations:

   • Ensure adequate heat dissipation by providing a thermal path to the PCB.
   • Use a ground plane under the IC to improve thermal performance.

7. Layout Recommendations:

   • Place input and output capacitors as close as possible to the IC.
   • Keep the loop area small to minimize noise and parasitic inductance.
   • Use wide traces for high-current paths.

8. Protection Features:

   • The device includes overcurrent protection, thermal shutdown, and undervoltage lockout.
   • Ensure that the input voltage is within the specified range to avoid damage.

9. Testing and Validation:

   • Test the circuit under various load conditions to ensure stability and efficiency.
   • Measure the output ripple and transient response to verify performance.

10. Storage and Handling:

    • Store in a dry environment to prevent moisture damage.
    • Follow proper handling procedures to avoid static damage.

(For reference only)