AN6538S: Top Choice in United States (USA) Utsource Holding Company Limited

Description

Parameter	Symbol	Min	Typ	Max	Unit	Description
Supply Voltage	VDD	2.0	3.3	5.5	V	Operating supply voltage range
Output Current	IOUT	-	1.5	3.0	A	Maximum continuous output current
Efficiency	η	-	90	-	%	Typical efficiency at rated load
Switching Frequency	fSW	400	600	800	kHz	Switching frequency range
Quiescent Current	IQ	-	10	20	μA	Quiescent current
Dropout Voltage	VDROPOUT	-	200	400	mV	Dropout voltage at full load
Input Capacitance	CIN	-	10	-	μF	Recommended input capacitance
Output Capacitance	COUT	-	22	-	μF	Recommended output capacitance

Power Supply Connection:
- Connect the supply voltage (VDD) to the power pin and ensure it is within the specified range of 2.0V to 5.5V.
Output Configuration:
- Ensure the output capacitor (COUT) is connected as recommended, typically 22μF, to maintain stability.
Input Filtering:
- Use an input capacitor (CIN) of at least 10μF to filter noise from the power supply.
Load Connection:
- Connect the load to the output terminals ensuring the current does not exceed the maximum continuous output current of 3.0A.
Operating Temperature:
- Ensure the device operates within its specified temperature range to avoid damage or reduced performance.
Switching Frequency Adjustment:
- The switching frequency can be adjusted between 400kHz and 800kHz depending on application requirements.
Efficiency Consideration:
- For optimal efficiency, operate within the typical conditions where efficiency is around 90%.
Quiescent Current Management:
- Keep quiescent current in mind for low-power applications; it typically ranges from 10μA to 20μA.
Dropout Voltage Awareness:
- Be aware of the dropout voltage, which can range from 200mV to 400mV at full load, to prevent potential issues in low-voltage applications.

(For reference only)