Details

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BUY TPS54560DDA https://www.utsource.net/itm/p/12608981.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Input Voltage	VIN	4.5	-	18	V	Operating input voltage range
Output Voltage	VOUT	-	0.9	6	V	Adjustable output voltage
Switching Frequency	fSW	-	280	700	kHz	Switching frequency
Efficiency	畏	-	93	-	%	Peak efficiency
Quiescent Current	IQ	-	35	-	渭A	Supply current in power save mode
Load Current	IOUT	-	3	6	A	Continuous output current
Shutdown Current	ISD	-	1	-	渭A	Supply current when EN is low
Thermal Shutdown	TSD	-	160	-	掳C	Thermal shutdown temperature
Package Type	PKG	-	-	-	-	DDA (DDPAK)

Instructions for TPS54560DDA:

1. Power-Up Sequence:

   • Ensure the input voltage is within the specified range of 4.5V to 18V.
   • Apply a logic high signal to the enable pin (EN) to start the device.

2. Output Voltage Configuration:

   • Adjust the output voltage using external resistors connected to the feedback pin (FB).
   • Follow the datasheet formula for resistor values to achieve the desired output voltage.

3. Thermal Considerations:

   • Monitor the junction temperature to ensure it does not exceed 160掳C to prevent thermal shutdown.
   • Use appropriate PCB layout techniques and heatsinking if necessary.

4. Protection Features:

   • The device includes overcurrent protection, short-circuit protection, and thermal shutdown features.
   • Verify that these protections are suitable for your application requirements.

5. Layout Recommendations:

   • Place the input and output capacitors as close as possible to the device.
   • Keep the ground plane solid and minimize trace lengths for high-frequency nodes.

6. Switching Frequency Adjustment:

   • The switching frequency can be adjusted by an external resistor or synchronized with an external clock source for noise-sensitive applications.

7. Efficiency Optimization:

   • For maximum efficiency, choose components that minimize parasitic losses and optimize the switching frequency based on load conditions.

(For reference only)