Details

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Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Input Voltage	VIN	-	3.0	-	40	V
Output Voltage	VOUT	IOUT = 5 mA to 1.5 A, R1 = 240 Ω	1.25	-	37	V
Line Regulation	ΔVOUT/ΔVIN	VIN = 3 V to 40 V, IOUT = 1.5 A	-	0.005	-	%
Load Regulation	ΔVOUT/ΔIOUT	IOUT = 5 mA to 1.5 A, VIN = 10 V	-	0.1	-	%
Dropout Voltage	VDROPOUT	IOUT = 1.5 A, VIN = 37 V	-	2.5	-	V
Output Current	IOUT	Continuous	5	-	1.5	A
Quiescent Current	IQ	VIN = 37 V, IOUT = 0 A	-	5	-	mA
Thermal Resistance (θJA)	-	-	-	50	-	°C/W
Operating Temperature Range	TJ	-	-40	-	125	°C

Instructions for Using the LM317HVT:

1. Basic Circuit Configuration:

   • Connect the input voltage (VIN) to the input pin.
   • Connect the output voltage (VOUT) to the output pin.
   • Connect the adjustment pin (ADJ) to a resistor network to set the output voltage.

2. Setting the Output Voltage:

   • Use the formula ( V_ = 1.25 left(1 + fracright) + I_ cdot R2 ).
   • Typically, ( R1 ) is set to 240 Ω, and ( I_ ) is very small (about 50 μA), so it can often be neglected.
   • Choose ( R2 ) to achieve the desired output voltage.

3. Capacitor Requirements:

   • Place a 1 μF capacitor between the input pin and ground to ensure stability.
   • Optionally, place a 10 μF capacitor between the output pin and ground to improve transient response and stability.

4. Heat Dissipation:

   • Ensure proper heat sinking if the device will be operating at high power levels (high current or large voltage drop).
   • Calculate the power dissipation using ( P = (VIN - VOUT) cdot IOUT ).

5. Protection:

   • The LM317HVT has built-in over-temperature and over-current protection.
   • However, it is recommended to include external fuses and diodes for additional protection in high-power applications.

6. Storage and Handling:

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

By following these instructions, you can effectively use the LM317HVT in your voltage regulation applications.

(For reference only)