Details

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BUY LM1117IMPX-3.3/NOPB https://www.utsource.net/itm/p/12543109.html

Below is the parameter table and instructions for the LM1117IMPX-3.3/NOPB, which is a 3.3V Low Dropout Linear Regulator.

Parameter Table

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Input Voltage	( V_ )	1.5	-	15	V	-
Output Voltage	( V_ )	3.3	3.3	3.3	V	-
Dropout Voltage	( V_ )	-	1.2	-	V	( I_ = 800 , text )
Output Current (Continuous)	( I_ )	0	800	1500	mA	-
Quiescent Current	( I_Q )	-	5	10	mA	( V_ = 5 , text, V_ = 3.3 , text )
Ground Pin Current	( I_ )	-	5	10	mA	( V_ = 5 , text, V_ = 3.3 , text )
Load Regulation	( Delta V_ / Delta I_ )	-	0.05	-	%	( I_ = 0 , text , 800 , text )
Line Regulation	( Delta V_ / Delta V_ )	-	0.01	-	%	( V_ = 4.5 , text , 15 , text )
Thermal Resistance (Junction to Ambient)	( R_{theta JA} )	-	120	-	°C/W	-
Operating Temperature Range	( T_ )	-40	-	125	°C	-
Storage Temperature Range	( T_ )	-65	-	150	°C	-

Instructions

1. Input Capacitor (CIN):

   • A 1 μF ceramic capacitor is recommended between the input and ground as close as possible to the regulator.
   • For better transient response, a larger capacitor (e.g., 10 μF) can be used.

2. Output Capacitor (COUT):

   • A 10 μF tantalum or ceramic capacitor is required between the output and ground.
   • For improved stability, a 10 μF to 100 μF capacitor is recommended.

3. PCB Layout:

   • Place the input and output capacitors as close as possible to the respective pins of the regulator.
   • Ensure good thermal management by providing a large copper area under the TO-252 (DPAK) package for heat dissipation.

4. Thermal Considerations:

   • The maximum power dissipation (( P_D )) can be calculated using: [ P_D = (V_ - V_) times I_ ]
   • Ensure that the junction temperature does not exceed 125°C. Use a heatsink if necessary.

5. Shutdown Feature:

   • The LM1117IMPX-3.3/NOPB does not have a shutdown feature. If a shutdown function is required, an external switch can be used to control the input voltage.

6. Package Information:

   • The LM1117IMPX-3.3/NOPB is available in a TO-252 (DPAK) package.
   • Pin Configuration:
     • Pin 1: Adjust (ADJ)
     • Pin 2: Output (OUT)
     • Pin 3: Input (IN)

7. Storage and Handling:

   • Store in a dry environment to prevent moisture damage.
   • Handle with care to avoid static discharge, which can damage the device.

By following these instructions and parameters, you can ensure optimal performance and reliability of the LM1117IMPX-3.3/NOPB in your application.

(For reference only)