# Adjustable Voltage Regulator Texas Instruments LM317AEMP, output 1.2–37 V, SOT-223 package

**URL:** https://aio.lv/en/product--texas-instruments-lm317aempnopb--12223335
**Data updated:** 2026-03-29 16:10 (EEST)
**Category:** Electronics Accessories
**Manufacturer:** texas instruments
**Manufacturer code:** LM317AEMP/NOPB
**EAN:** 2050002634497
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 12.39 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--texas-instruments-lm317aempnopb--12223335

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.99 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The Texas Instruments LM317AEMP is an adjustable linear voltage regulator in an SOT-223 package with an output range of 1.2–37 V. It provides a user-defined regulated voltage via external resistors, suitable for power supplies, bench regulators, and embedded electronics. Key parameters include adjustable output, compact SOT-223 form factor, and suitability for prototypes and small devices requiring stable DC supply.

## Long description

The Texas Instruments LM317AEMP is an adjustable linear voltage regulator in a compact SOT-223 package that provides a stable DC output adjustable from 1.2 V to 37 V. Designed for user-defined regulated voltages via external resistor networks, this regulator suits power supplies for bench equipment, embedded systems, and small electronic devices where space is limited. The device is intended for linear regulation applications requiring a simple, reliable solution for obtaining a specific output voltage with minimal external components.
Advantages
The LM317AEMP offers a wide adjustable output range and straightforward set-up using two external resistors to define the output voltage. Its SOT-223 package provides a compact physical footprint while allowing adequate thermal performance for low- to moderate-power applications. The device requires few external components, is widely supported in reference designs, and is compatible with common protection and decoupling practices used in power regulation circuits.
Suitable for
 Adjustable bench power supplies and laboratory regulators
 Embedded systems and microcontroller-based projects
 Prototype boards and development systems requiring a regulated DC rail
 Small consumer electronics and instrumentation with low to moderate current needs
Key specifications
 Output voltage range: 1.2 V to 37 V adjustable
 Device type: Linear adjustable regulator
 Package: SOT-223 compact surface-mount package
 Adjustment method: External resistor divider sets output voltage
 Typical application power level: low to moderate currents (dependent on thermal conditions)
How to use
Configure the LM317AEMP by connecting an appropriate resistor between the output and adjust pins and a second resistor from the adjust pin to ground to set the desired output voltage according to the standard regulator equation. Include input and output capacitors as recommended for stability and transient response; ensure the input voltage is sufficiently higher than the intended output to accommodate dropout and regulation headroom. Mount the SOT-223 package on a PCB with adequate copper area or a small heatsink if higher dissipation is anticipated. Follow standard layout practices for power regulators: short traces for the adjust network and decoupling components, and proper grounding to minimize noise.
Usage recommendations
For reliable operation, provide input voltage at least a few volts above the desired output to account for dropout and ensure correct thermal dissipation. Use low-ESR capacitors on the input and output as indicated in application notes, keep the adjust resistors low enough to limit noise but high enough to avoid excessive quiescent current, and verify temperature-rise on the PCB under expected load conditions. Consult the manufacturer's application information for detailed stability and protection guidance.

## FAQ

### How much does the Voltage Regulator Texas Instruments LM317AEMP cost, and is it available for purchase?

The price is 14.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 732 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 16.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All texas instruments products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized texas instruments service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

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