TPS5450DDARG4: Top Choice in United States (USA) Utsource Holding Company Limited

Description

Parameter	Symbol	Test Conditions	Min	Typ	Max	Unit
Input Voltage	VIN		4.5		17	V
Output Voltage	VOUT			0.8	5.5	V
Switching Frequency	fSW			500		kHz
Quiescent Current	IQ	VOUT = 3.3V		2.9		mA
Shutdown Current	ISD			1		μA
Load Current	IOUT	VOUT = 3.3V		500		mA
Efficiency	η	VOUT = 3.3V, IOUT = 500mA		90		%
Thermal Shutdown	TSD			160		°C
Operating Temperature	TOPR		-40		125	°C

Input Voltage (VIN):
- Ensure the input voltage is within the range of 4.5V to 17V.
Output Voltage (VOUT):
- Set the output voltage using external resistors according to the formula provided in the datasheet. The typical output voltage can be adjusted from 0.8V to 5.5V.
Switching Frequency (fSW):
- The switching frequency is fixed at 500kHz. No external components are required to set this parameter.
Quiescent Current (IQ):
- The quiescent current is typically 2.9mA when the output voltage is set to 3.3V. This value should be considered in low-power applications.
Shutdown Current (ISD):
- In shutdown mode, the device draws a typical current of 1μA. Use the EN pin to control the shutdown feature.
Load Current (IOUT):
- The device can support up to 500mA load current with an output voltage of 3.3V. Ensure that the heat dissipation is adequate for higher load currents.
Efficiency (η):
- For optimal efficiency, operate the device under conditions where it can achieve approximately 90% efficiency, such as at 3.3V output and 500mA load current.
Thermal Shutdown (TSD):
- The device has built-in thermal protection which activates at around 160°C. Design the PCB layout to ensure proper heat dissipation.
Operating Temperature (TOPR):
- The operating temperature range is from -40°C to 125°C. Ensure environmental conditions do not exceed these limits.

For detailed design considerations and application circuits, refer to the full datasheet of the TPS5450DDARG4.

(For reference only)