Details

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BUY ACT4523 https://www.utsource.net/itm/p/12606978.html

Parameter	Symbol	Min	Typ	Max	Unit	Description
Input Voltage	VIN	2.7	-	5.5	V	Operating input voltage range
Output Voltage	VOUT	-	1.8	-	V	Fixed output voltage
Quiescent Current	IQ	-	1.0	-	渭A	Quiescent current at no load
Dropout Voltage	VDROPOUT	-	0.2	-	V	Dropout voltage at 150mA load
Load Regulation	-	-	0.2	-	%	Load regulation from 0 to 150mA
Line Regulation	-	-	0.05	-	%/V	Line regulation over input voltage range
Output Current	IOUT	-	150	-	mA	Maximum continuous output current
Power Dissipation	PD	-	360	-	mW	Maximum power dissipation (TA = 25掳C)
Operating Temperature	TOPR	-40	-	85	掳C	Operating ambient temperature range
Storage Temperature	TSTG	-65	-	150	掳C	Storage temperature range
Thermal Resistance	胃JA	-	125	-	掳C/W	Junction-to-ambient thermal resistance
Enable Input High Voltage	ENH	1.2	-	-	V	Enable input high threshold
Enable Input Low Voltage	ENL	-	0.4	-	V	Enable input low threshold

Instructions for Use

1. Input Voltage (VIN):

   • Ensure the input voltage is within the specified range (2.7V to 5.5V). Exceeding this range can damage the device.

2. Output Voltage (VOUT):

   • The ACT4523 provides a fixed output voltage of 1.8V. No external components are required to set this voltage.

3. Quiescent Current (IQ):

   • The quiescent current is typically 1.0渭A when no load is connected. This is important for low-power applications.

4. Dropout Voltage (VDROPOUT):

   • The dropout voltage is 0.2V at a load current of 150mA. Ensure the input voltage is at least 0.2V higher than the output voltage to maintain regulation.

5. Load Regulation:

   • The load regulation is 0.2%, meaning the output voltage will change by 0.2% when the load current changes from 0 to 150mA.

6. Line Regulation:

   • The line regulation is 0.05% per volt, indicating that the output voltage will change by 0.05% for each volt change in the input voltage.

7. Output Current (IOUT):

   • The maximum continuous output current is 150mA. Do not exceed this limit to avoid overheating or damage.

8. Power Dissipation (PD):

   • The maximum power dissipation is 360mW at an ambient temperature of 25掳C. Ensure adequate heat sinking if operating near this limit.

9. Operating Temperature (TOPR):

   • The device operates reliably between -40掳C and 85掳C. Avoid operating outside this range to prevent performance degradation or failure.

10. Storage Temperature (TSTG):

    • Store the device between -65掳C and 150掳C to ensure long-term reliability.

11. Thermal Resistance (胃JA):

    • The junction-to-ambient thermal resistance is 125掳C/W. Use a heatsink if the device will be operating at high power levels or in high ambient temperatures.

12. Enable Input (EN):

    • The enable input has a high threshold of 1.2V and a low threshold of 0.4V. Apply a voltage above 1.2V to turn the regulator on and below 0.4V to turn it off.

Additional Notes

• Always use appropriate bypass capacitors (typically 1渭F ceramic capacitors) at both the input and output to ensure stability and reduce noise.
• For optimal performance, keep the PCB layout compact and minimize trace lengths, especially for the input and output capacitors.

(For reference only)