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LM340S-5.0 The Texas Instruments LM340S-5.0 is a linear voltage regulator providing a fixed 5V output with up to 1.5A current. It is designed for surface mount applications.
Mfr Part #:

LM340S-5.0

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments LM340S-5.0 is a linear voltage regulator providing a fixed 5V output with up to 1.5A current. It is designed for surface mount applications.
✓ Total Stock: 194 pcs
$ Price Range: $0.28

LM340S-5.0 Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Smaxon Electronics ✓
Non-Authorised Inventory information
172 pcs
On Request
172 pcs On Request 1 On Request On Request 17+ On Request On Request
Hybrid Electronics ✓
Non-Authorised Inventory information
22 pcs
On Request
22 pcs On Request 1 On Request On Request NO DC On Request 2026-05-08 14:15:38
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LM340S-5.0 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Lead Style
Mounting Type
Noise
Number of Regulators
Operating Temperature
Output Configuration
Output Current
Output Type
PSRR
Protection Features
Quiescent Current
Supplier Device Package
Supplier Package
Thermal Resistance
Voltage
Voltage Dropout (Max)
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LM340S-5.0 Description

Short technical summary and product information.

The LM340S-5.0 from Texas Instruments is a monolithic 3-terminal positive voltage regulator. It is designed to deliver over 1.5A of output current if adequate heat sinking is provided. This regulator features internal current-limiting, thermal shutdown, and safe-area compensation, making it highly robust.

 

Key electrical specifications include a maximum input voltage of 35V and a minimum input voltage of 7.5V. The fixed output voltage is 5V, with a typical dropout voltage of 2V at a 1A load. It offers a typical quiescent current of 6.5mA and a PSRR of 50dB at 100 KHz.

 

The device operates within a temperature range of 0°C to 125°C. It is available in a TO-263-4, D²Pak (3 Leads + Tab), TO-263AA package, suitable for surface mount applications. The regulator includes over-temperature and short-circuit protection features.

LM340S-5.0 Quick Information

Product Type: Linear Voltage Regulator
Series: LM340
Canonical Name: LM340S-5.0 Linear Voltage Regulator
Subcategory: Linear

LM340S-5.0 Compliance

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

LM340S-5.0 Estimated Pricing

Qty Low High
1+ $0.28 $0.28

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

LM340S-5.0 Features

  • Fixed 5V positive output voltage.
  • Maximum output current of 1.5A.
  • Wide input voltage range up to 35V.
  • Internal thermal overload protection.
  • Surface mount TO-263 package.

LM340S-5.0 Applications

  • Powering sensitive electronic circuits.
  • Regulating voltage in embedded systems.
  • Providing stable power rails.
  • Use in industrial control systems.

LM340S-5.0 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the LM340S-5.0?

The input voltage range is 7.5V to 35V.

What package does the LM340S-5.0 come in?

The LM340S-5.0 is available in a surface-mount DDPAK/TO-263-3 package, also described as TO-263-4, D²Pak (3 leads + tab), TO-263AA.

What is the operating temperature range?

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

What is the maximum output current?

Maximum output current is 1.5A.

What is the dropout voltage?

Typical dropout voltage is 2V at 1A load.

What protection features are included?

Over-temperature and short-circuit protection.

What is the typical quiescent current?

Typical quiescent current is 6.5mA.

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