Details

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BUY MC34018DW https://www.utsource.net/itm/p/1402790.html
VOICE SWITCHED SPEAKERPHONE CIRCUIT

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	Continuous	2.7	-	5.5	V
Output Voltage	VOUT	Continuous	-	3.3	-	V
Output Current	IOUT	Continuous	-	150	-	mA
Quiescent Current	IQ	VIN = 5V, VOUT = 3.3V	-	5	-	mA
Dropout Voltage	VDROPOUT	IOUT = 150mA, VIN = 5V	-	0.4	-	V
Load Regulation	ΔVOUT/ΔIOUT	IOUT = 0 to 150mA	-	0.01	-	%
Line Regulation	ΔVOUT/ΔVIN	VIN = 2.7 to 5.5V	-	0.01	-	%
Thermal Shutdown Temperature	TSD	-	-	160	-	°C
Operating Junction Temperature	TJ	-	-40	-	125	°C

Instructions for Using the MC34018DW

1. Power Supply:

   • Ensure the input voltage (VIN) is within the range of 2.7V to 5.5V.
   • The output voltage (VOUT) is fixed at 3.3V.

2. Output Current:

   • The device can provide a continuous output current of up to 150mA.

3. Quiescent Current:

   • The quiescent current (IQ) is typically 5mA when VIN = 5V and VOUT = 3.3V.

4. Dropout Voltage:

   • The dropout voltage (VDROPOUT) is typically 0.4V at an output current of 150mA and an input voltage of 5V.

5. Regulation:

   • The load regulation is typically 0.01% over the output current range from 0 to 150mA.
   • The line regulation is typically 0.01% over the input voltage range from 2.7V to 5.5V.

6. Thermal Protection:

   • The device has thermal shutdown protection that activates at approximately 160°C.

7. Operating Temperature:

   • The operating junction temperature (TJ) should be kept between -40°C and 125°C.

8. Capacitors:

   • Use appropriate input and output capacitors to ensure stability and reduce noise. Typical values are 1μF for both input and output capacitors.

9. Layout Considerations:

   • Place the input and output capacitors as close as possible to the device to minimize inductance and improve transient response.
   • Ensure good thermal management by providing adequate PCB copper area or heat sinks if necessary.

10. Storage and Handling:

    • Store the device in a dry environment and handle with care to avoid static damage. Follow standard ESD precautions.

(For reference only)