Details

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Parameter	Symbol	Min	Typical	Max	Unit	Conditions
Input Voltage	VIN	2.7	-	5.5	V	Continuous Operation
Output Voltage	VOUT	1.8	-	3.3	V	Adjustable
Output Current	IOUT	-	2.5	-	A	Continuous Operation
Efficiency	畏	-	95	-	%	Typical at 3.3V, 1A
Switching Frequency	fSW	-	2.1	-	MHz	Fixed
Quiescent Current	IQ	-	40	-	渭A	No Load, VIN = 5V
Shutdown Current	ISD	-	0.5	-	渭A	VIN = 5V, EN = 0V
Soft-Start Time	tSS	-	1.5	-	ms	Typical
Thermal Shutdown Temperature	TSD	-	160	-	掳C	Typical
Operating Junction Temperature	TJ	-40	-	125	掳C	Storage and Operation

Instructions for TPS630250RNCT

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 2.7V to 5.5V.
   • Use appropriate input capacitors to stabilize the input voltage.

2. Output Voltage (VOUT):

   • The output voltage can be adjusted between 1.8V and 3.3V using external resistors.
   • Connect the feedback pin (FB) to a voltage divider formed by two resistors to set the desired output voltage.

3. Output Current (IOUT):

   • The device can provide up to 2.5A of continuous output current.
   • Ensure proper heat dissipation if operating near the maximum current to avoid overheating.

4. Efficiency:

   • The efficiency is typically around 95% at 3.3V and 1A.
   • Use low ESR capacitors and inductors to maximize efficiency.

5. Switching Frequency (fSW):

   • The switching frequency is fixed at 2.1MHz.
   • This helps in reducing the size of external components like inductors and capacitors.

6. Quiescent Current (IQ):

   • The quiescent current is typically 40渭A with no load.
   • This low quiescent current helps in extending battery life in portable applications.

7. Shutdown Current (ISD):

   • The shutdown current is typically 0.5渭A when the enable pin (EN) is low.
   • Use this feature to reduce power consumption when the device is not in use.

8. Soft-Start Time (tSS):

   • The soft-start time is typically 1.5ms.
   • This helps in reducing inrush current and stabilizing the output during startup.

9. Thermal Shutdown Temperature (TSD):

   • The device will shut down if the junction temperature exceeds 160掳C.
   • Ensure adequate cooling and thermal management to prevent thermal shutdown.

10. Operating Junction Temperature (TJ):

    • The operating junction temperature range is from -40掳C to 125掳C.
    • Ensure the device operates within this temperature range to avoid damage or performance degradation.

Additional Notes:

• PCB Layout:
  • Follow recommended PCB layout guidelines to ensure optimal performance and thermal management.
• Component Selection:
  • Choose high-quality, low ESR capacitors and inductors to minimize losses and improve efficiency.
• Testing:
  • Test the circuit under various load conditions to ensure stable operation and meet design specifications.

(For reference only)