Mfr Part #:

LM317MDT

Mfr Name: ST

The ST LM317MDT is an adjustable 3-terminal positive voltage regulator designed to supply over 1.5A of load current. It offers an output voltage adjustable from 1.2V to 37V.

✓ Total Stock: 200,406 pcs

$ Price Range: $0.30

LM317MDT Available from 2 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	200,000 pcs On Request	200000 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Smaxon Electronics ✓ Non-Authorised Inventory information	406 pcs On Request	406 pcs	On Request	1	On Request	On Request	17+	On Request	On Request

LM317MDT Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	ST
Lead Style	Gull Wing
Load Current	1.5A
Output Voltage	1.2V to 37V
Storage Temperature	-65°C ~ 150°C

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LM317MDT Description

Short technical summary and product information.

The STMicroelectronics LM317MDT is a monolithic integrated circuit that functions as an adjustable 3-terminal positive voltage regulator. It is designed to provide more than 1.5A of load current with an output voltage that can be adjusted from 1.2V to 37V. This regulator incorporates internal current limiting, thermal shutdown, and safe area compensation for robust operation.

Key electrical characteristics include a reference voltage typically at 1.25V, with a temperature stability of 0.7%/VO. Line regulation is specified as low as 0.01%/V, and load regulation is typically 0.5%VO. The device can handle an input-output voltage differential of up to 40V and has a maximum output current of up to 2.2A under certain conditions.

The LM317MDT is available in multiple package types, including SOT-223, TO-252, and TO-220-3L, allowing for flexibility in design and application. Its internal protection circuitry makes it suitable for a wide range of applications where stable and adjustable voltage regulation is required.

LM317MDT Quick Information

Product Type: Adjustable Voltage Regulator

Canonical Name: LM317MDT Adjustable Voltage Regulator

Subcategory: Linear

LM317MDT Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

Lead Free: Yes

LM317MDT Estimated Pricing

Qty	Low	High
1+	$0.30	$0.30

Estimated market price range - modelled values for guidance only, not live distributor offers.

LM317MDT Features

Adjustable positive voltage regulator
Output voltage 1.2V to 37V
Over 1.5A load current capability
Internal current limiting and thermal shutdown
Available in SOT-223, TO-252, TO-220 packages

LM317MDT Applications

Adjustable power supplies
Battery charging circuits
Linear regulation applications
Voltage regulation for electronics

LM317MDT FAQs

6 frequently asked questions generated from this part’s specifications.

What is the output voltage range of the LM317MDT?

The output voltage is adjustable from 1.2V to 37V.

What is the maximum output current of the LM317MDT?

The minimum load current is 1.5A. Under specific conditions (VI-VO ≤ 15V, PD ≤ PMAX, TA=25°C), the maximum output current ranges from 1.0A to 2.2A.

What packages is the LM317MDT available in?

The LM317MDT is available in TO-220-3L, TO-252, and SOT-223 packages.

What is the operating junction temperature range?

The operating junction temperature range is 0°C to 125°C.

What is the reference voltage of the LM317MDT?

The reference voltage is 1.20V to 1.30V under specified conditions.

What is the ripple rejection of the LM317MDT?

Ripple rejection is 66dB minimum at VO=10V, f=120Hz without CADJ.