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LD1117S12TR The STMicroelectronics LD1117S12TR is a linear voltage regulator IC providing a fixed 1.2V output. It offers an 800mA output current and is housed in a SOT-223 package.
Mfr Part #:

LD1117S12TR

Available from 4 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics LD1117S12TR is a linear voltage regulator IC providing a fixed 1.2V output. It offers an 800mA output current and is housed in a SOT-223 package.
✓ Total Stock: 34,089 pcs
$ Price Range: $0.28

LD1117S12TR Available from 4 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Risen Electronics ✓
Non-Authorised Inventory information
15,000 pcs
On Request
15000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Smaxon Electronics ✓
Non-Authorised Inventory information
12,500 pcs
On Request
12500 pcs On Request 1 On Request On Request 05+18+ On Request On Request
Fe Components ✓
Non-Authorised Inventory information
5,000 pcs
On Request
5000 pcs On Request 1 On Request On Request On Request On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
1,589 pcs
On Request
1589 pcs On Request 1 On Request On Request On Request 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.

LD1117S12TR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Mounting Type
Number of Regulators
Operating Temperature
Output Configuration
Output Current
Output Type
Output Voltage
PSRR
Protection Features
Supplier Device Package
Voltage
Voltage Dropout (Max)
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LD1117S12TR Description

Short technical summary and product information.

The STMicroelectronics LD1117S12TR is a positive, fixed output linear voltage regulator designed for power management applications. It provides a stable 1.2V output voltage with a maximum output current capability of 800mA.

 

Key electrical characteristics include a low dropout voltage of 1.2V at 800mA and a quiescent current of 5mA. The regulator also features over current and over temperature protection for enhanced reliability. Its PSRR is rated at 75dB at 120Hz, indicating good noise rejection.

 

This component is supplied in a SOT-223 surface mount package, suitable for automated assembly processes. The operating temperature range is from 0°C to 125°C, making it suitable for a variety of environmental conditions. The LD1117S12TR is a reliable choice for applications requiring a consistent and regulated power supply.

LD1117S12TR Quick Information

Product Type: Linear Voltage Regulator
Canonical Name: STMicroelectronics LD1117S12TR Linear Voltage Regulator
Subcategory: Linear, Low Drop Out (LDO) Regulators

LD1117S12TR Compliance

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

LD1117S12TR Estimated Pricing

Qty Low High
1+ $0.28 $0.28

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

LD1117S12TR Features

  • Fixed 1.2V positive output voltage.
  • Maximum output current of 800mA.
  • Low dropout voltage of 1.2V.
  • Surface mount SOT-223 package.
  • Over current and temperature protection.

LD1117S12TR Applications

  • Power management circuits.
  • Low voltage power supplies.
  • Consumer electronics devices.
  • Industrial control systems.

LD1117S12TR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the output voltage of the LD1117S12TR?

The output voltage is fixed at 1.2V.

What is the maximum input voltage?

The maximum input voltage is 15V.

What is the output current rating?

The output current is rated at 800mA.

What is the dropout voltage?

The maximum dropout voltage is 1.2V at 800mA output.

What is the operating temperature range?

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

What package does the LD1117S12TR come in?

It comes in a SOT-223 surface-mount package (also TO-261-4, TO-261AA).

What protection features does it have?

It includes over-current and over-temperature protection.

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