Details

---

BUY LM1117T-3.3 https://www.utsource.net/itm/p/9475827.html
IC VREG 3.3 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PSFM3, TO-220, 3 PIN, Fixed Positive Single Output LDO Regulator

Parameter	Symbol	Test Conditions	Min	Typ	Max	Unit
Output Voltage	Vout	Iout = 0 to 800mA, Vin = 4.5V to 16V	3.135	3.3	3.465	V
Line Regulation	ΔVout/ΔVin	Iout = 100mA, Vin = 4.5V to 16V	-	0.01	-	%
Load Regulation	ΔVout/ΔIout	Vin = 5V, Iout = 0 to 800mA	-	0.1	-	%
Dropout Voltage	Vdo	Iout = 800mA, Vin = 4.5V	-	1.2	-	V
Quiescent Current	IQ	Iout = 0mA, Vin = 5V	-	5	-	mA
Shutdown Current	ISD	VSD = 0V, Vin = 5V	-	2	-	μA
Thermal Shutdown Temperature	TSD	-	160	-	°C
Operating Junction Temperature Range	TJ	-	-40	125	°C
Storage Temperature Range	TSTG	-	-65	150	°C

Instructions for Use:

1. Circuit Configuration:

   • Connect the input voltage (Vin) to the IN pin.
   • Connect the output voltage (Vout) to the OUT pin.
   • Ground the GND pin.
   • Place a 1μF ceramic capacitor between the IN pin and ground.
   • Place a 1μF ceramic capacitor between the OUT pin and ground.

2. Input Voltage:

   • Ensure the input voltage is within the range of 4.5V to 16V.
   • The input voltage should be at least 1.2V higher than the desired output voltage to maintain regulation.

3. Output Voltage:

   • The LM1117T-3.3 provides a fixed output voltage of 3.3V.
   • The output voltage can be adjusted by using external resistors if needed.

4. Load Regulation:

   • The load regulation is typically 0.1%, meaning the output voltage will remain stable even when the load current changes.

5. Thermal Considerations:

   • Ensure proper heat dissipation, especially when operating at high output currents.
   • Use a heatsink if necessary to keep the junction temperature within the specified range.

6. Shutdown Function:

   • To shut down the regulator, connect the SD pin to ground. This will reduce the quiescent current to approximately 2μA.

7. Capacitors:

   • Use ceramic capacitors with X7R or X5R dielectric for stability.
   • Ensure the capacitors have a low ESR (Equivalent Series Resistance).

8. Storage and Handling:

   • Store the device in a dry environment within the temperature range of -65°C to 150°C.
   • Handle the device with care to avoid static damage.

(For reference only)