Details

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BUY LD242-3 https://www.utsource.net/itm/p/12403126.html

Parameter	Description	Value
Part Number	Device Identifier	LD242-3
Type	Device Type	Linear Regulator
Input Voltage	Range of input voltage	4.5V to 20V
Output Voltage	Fixed output voltage	3.3V
Output Current	Maximum continuous output current	150mA
Dropout Voltage	Minimum difference between input and output	1.2V (max)
Quiescent Current	Current consumed by the regulator itself	5渭A (typical)
Operating Temperature	Range of ambient temperature for operation	-40掳C to +85掳C
Storage Temperature	Range of storage temperature	-65掳C to +150掳C
Package	Physical package type	SOT-23
Thermal Resistance	Junction-to-ambient thermal resistance	175掳C/W

Instructions for Use

1. Circuit Design:

   • Ensure the input voltage is within the specified range (4.5V to 20V).
   • Place a 1渭F ceramic capacitor close to the input pin to stabilize the input voltage.
   • Place a 1渭F ceramic capacitor close to the output pin to stabilize the output voltage.

2. Heat Dissipation:

   • The device has a thermal resistance of 175掳C/W. Ensure adequate heat dissipation if the device will be operating at high power levels or in high ambient temperatures.

3. PCB Layout:

   • Keep the PCB traces short and wide to minimize parasitic inductance and resistance.
   • Use a ground plane to improve thermal performance and reduce noise.

4. Power-Up Sequence:

   • Apply the input voltage gradually to avoid inrush currents.
   • Monitor the output voltage to ensure it stabilizes at 3.3V.

5. Handling:

   • Handle the device with care to avoid static damage.
   • Follow ESD (Electrostatic Discharge) precautions during handling and installation.

6. Storage:

   • Store the device in a dry, cool place within the specified storage temperature range (-65掳C to +150掳C).

7. Testing:

   • Test the device under typical operating conditions to ensure it meets the specified parameters.
   • Use a multimeter to verify the output voltage and current.

By following these guidelines, you can ensure optimal performance and reliability of the LD242-3 linear regulator.

(For reference only)