Details

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BUY IR3553MTRPBF https://www.utsource.net/itm/p/12541612.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Input Voltage	VIN	4.5	-	28	V	Operating input voltage range
Output Voltage	VOUT	-	1.0	5.5	V	Adjustable output voltage
Switching Frequency	FSW	-	650	-	kHz	Fixed switching frequency
Quiescent Current	IQ	-	30	-	μA	Quiescent current at no load
Dropout Voltage	VDROPOUT	-	300	-	mV	Typical dropout voltage at full load
Load Current	ILOAD	-	3	3	A	Maximum continuous output current
Efficiency	η	-	90	-	%	Peak efficiency
Shutdown Current	ISD	-	1	-	μA	Supply current in shutdown
Thermal Shutdown	TSD	-	160	-	°C	Thermal shutdown temperature
Package Type	-	-	-	-	SOIC-8	Package type

Instructions for IR3553MTRPBF:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the specified range of 4.5V to 28V.

2. Output Voltage (VOUT):

   • Adjust the output voltage using external resistors connected to the feedback pin. The typical output voltage can be set between 1.0V and 5.5V.

3. Switching Frequency (FSW):

   • The device operates at a fixed switching frequency of 650kHz. No external components are required to set this frequency.

4. Quiescent Current (IQ):

   • The quiescent current is typically 30μA when there is no load on the output.

5. Dropout Voltage (VDROPOUT):

   • The dropout voltage is approximately 300mV under full load conditions, which helps in maintaining stable output.

6. Load Current (ILOAD):

   • The device can deliver a maximum continuous output current of 3A.

7. Efficiency (η):

   • For optimal performance, aim for operating conditions that achieve the peak efficiency of around 90%.

8. Shutdown Current (ISD):

   • When the device is in shutdown mode, the supply current drops to about 1μA.

9. Thermal Shutdown (TSD):

   • Monitor the device temperature to avoid exceeding the thermal shutdown threshold of 160°C.

10. Package Type:

    • The component comes in an SOIC-8 package, suitable for surface mount applications.

For detailed application circuits and further design considerations, refer to the datasheet provided by the manufacturer.

(For reference only)