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LM317EMP The LM317EMP is an adjustable positive linear voltage regulator from Texas Instruments capable of delivering up to 1.5A output current. It operates over a 3V to 40V input range and provides an adjustable output from 1.25V to 37V.
Mfr Part #:

LM317EMP

Available from 4 distributors
Mfr Name: Texas Instruments
Texas Instruments
The LM317EMP is an adjustable positive linear voltage regulator from Texas Instruments capable of delivering up to 1.5A output current. It operates over a 3V to 40V input range and provides an adjustable output from 1.25V to 37V.
✓ Total Stock: 2,493 pcs
$ Price Range: $0.28

LM317EMP Available from 4 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Braun Electronic Components ✓
Non-Authorised Inventory information
1,230 pcs
On Request
1230 pcs On Request 1 On Request On Request On Request On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
1,077 pcs
On Request
1077 pcs On Request 1 On Request On Request On Request On Request On Request
Partservice ✓
Non-Authorised Inventory information
148 pcs
On Request
148 pcs On Request 1 On Request On Request On Request On Request On Request
Bristol Electronics ✓
Non-Authorised Inventory information
38 pcs
On Request
38 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

LM317EMP Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Accuracy
Current
Mounting Type
Noise
Number of Regulators
Operating Temperature
Output Configuration
Output Type
PSRR
Protection Features
Supplier Device Package
Thermal Resistance
Voltage
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LM317EMP Description

Short technical summary and product information.

The LM317EMP is a three-terminal adjustable positive linear voltage regulator from Texas Instruments designed to deliver up to 1.5A of output current. It accepts an input voltage range from 3V to 40V and provides an adjustable output voltage from 1.25V to 37V, set by two external resistors.

 

Key electrical characteristics include a typical dropout voltage of 2250 mV, quiescent current of 5 mA, and output noise of 35 µVrms. The regulator offers excellent line regulation of 0.01%/V and load regulation of 0.1%, along with 80 dB ripple rejection. It includes built-in protection features such as over current, over temperature, and short circuit protection.

 

The device is housed in a surface-mount SOT-223-4 package (also referred to as TO-261-4, TO-261AA) and operates over a temperature range of 0°C to 125°C. It is suitable for a wide variety of applications requiring a stable and adjustable voltage supply.

LM317EMP Quick Information

Product Type: Linear Voltage Regulator
Series: LM317
Canonical Name: LM317EMP Adjustable Positive Linear Voltage Regulator
Subcategory: Positive Adjustable Output

LM317EMP Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LM317EMP Estimated Pricing

Qty Low High
1+ $0.28 $0.28

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

LM317EMP Features

  • Adjustable output voltage from 1.25V to 37V.
  • Output current capability up to 1.5A.
  • Built-in over current and thermal protection.
  • Surface-mount SOT-223-4 package.
  • Low output noise of 35 µVrms.

LM317EMP Applications

  • Used in post-regulation for switching supplies.
  • Ideal for adjustable power supply designs.
  • Suitable for battery-powered equipment.
  • Used in industrial control systems.

LM317EMP FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum output current of the LM317EMP?

The LM317EMP can deliver up to 1.5A output current.

What is the input voltage range for the LM317EMP?

The input voltage range is 3V minimum to 40V maximum.

What is the output voltage range of the LM317EMP?

The output voltage is adjustable from 1.25V to 37V.

What package is the LM317EMP available in?

The LM317EMP is available in a surface-mount SOT-223-4 package.

What is the operating temperature range of the LM317EMP?

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

What protection features does the LM317EMP include?

The LM317EMP includes over current, over temperature, and short circuit protection.

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