LM317T Voltage Regulator IC
KSH 50.00
In Stock
The LM317T is a widely used adjustable linear voltage regulator capable of supplying over 1.5A of output current with an adjustable output voltage range from 1.2V to 37V [citation:1][citation:2]. It requires only two external resistors to set the output voltage, making it exceptionally easy to use [citation:2][citation:9].
| Parameter | Value |
|---|---|
| Output Voltage Range | 1.2V to 37V [citation:1][citation:4] |
| Maximum Output Current | 1.5A [citation:2][citation:3] |
| Input Voltage Range | 4.2V to 40V [citation:1][citation:4] |
| Line Regulation | 0.01%/V typical [citation:6] |
| Operating Temperature | 0°C to 125°C [citation:1][citation:3] |
| Package | TO220 (3pin through-hole) [citation:5][citation:7] |
= Pin Configuration =
| Pin | Name | Description |
|---|---|---|
| 1 | Adjustment (ADJ) | Connect to resistor divider for output setting [citation:2] |
| 2 | Output (VOUT) | Regulated output voltage pin |
| 3 | Input (VIN) | Unregulated input voltage (4.2V-40V) |
> Adjust output using two external resistors: Vout = 1.25V × (1 + R2/R1) [citation:9]
+Internal Protections Current limiting, thermal shutdown, and safearea compensation for blow-out proof operation [citation:2][citation:6]
+Floating Operation - Can regulate high voltages as long as differential is within limits [citation:2][citation:12]
+Eliminates Stocking - Replaces many fixed voltage regulators [citation:1][citation:2]
√ Available from multiple manufacturers (STMicroelectronics, ON Semiconductor, Texas Instruments) [citation:1][citation:10][citation:12]
√ Common alternative to fixed regulators for prototyping
