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LD1117-3.3 The UMW (Youtai Semiconductor) LD1117-3.3 is a linear voltage regulator with a fixed 3.3V output. It features a low dropout voltage and is available in a SOT-223-3L package.
Mfr Part #:

LD1117-3.3

Available from 2 distributors
Mfr Name: UMW (Youtai Semiconductor)
UMW (Youtai Semiconductor)
The UMW (Youtai Semiconductor) LD1117-3.3 is a linear voltage regulator with a fixed 3.3V output. It features a low dropout voltage and is available in a SOT-223-3L package.
✓ Total Stock: 4,445 pcs
$ Price Range: $0.28

LD1117-3.3 Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
3,186 pcs
On Request
3186 pcs On Request 1 On Request On Request 24+ On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
1,259 pcs
On Request
1259 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.

LD1117-3.3 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Control Features
Current
Mounting Type
Number of Regulators
Operating Temperature
Output Configuration
Output Type
PSRR
Protection Features
Supplier Device Package
Voltage
Voltage Dropout (Max)
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LD1117-3.3 Description

Short technical summary and product information.

The LD1117-3.3 from UMW (Youtai Semiconductor) is a positive, low-voltage dropout (LDO) linear voltage regulator. It provides a fixed output voltage of 3.3V with an output accuracy of 1.5% for this fixed version. The device offers a typical voltage dropout of 1.2V at 1A, making it suitable for applications where efficient power regulation is critical.

 

Key features include thermal shutdown and current limiting protection, enhancing device reliability and system safety. The operating temperature range is -40°C to 125°C (TJ), allowing for use in demanding environments. The regulator is designed for surface mount applications and comes in a SOT-223-3L package.

 

This component is well-suited for various electronic products, including battery-powered systems, portable instrumentation, and post-regulators in switch-mode power supplies. Its low dropout characteristic and integrated protection features make it a versatile choice for power management in compact designs.

LD1117-3.3 Quick Information

Product Type: Linear Voltage Regulator
Canonical Name: UMW (Youtai Semiconductor) LD1117-3.3 Linear Voltage Regulator
Subcategory: Linear Voltage Regulator

LD1117-3.3 Compliance

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

LD1117-3.3 Estimated Pricing

Qty Low High
1+ $0.28 $0.28

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

LD1117-3.3 Features

  • Fixed 3.3V output voltage.
  • Low dropout voltage of 1.2V at 1A.
  • 1.5% output accuracy for fixed versions.
  • Thermal shutdown and current limiting.
  • Surface mount SOT-223-3L package.

LD1117-3.3 Applications

  • Suitable for battery powered systems.
  • Ideal for portable instrumentation.
  • Used in SMPS post-regulator applications.
  • Designed for laptop and notebook computers.
  • Applicable in cellular phone power supplies.

LD1117-3.3 FAQs

7 frequently asked questions generated from this part’s specifications.
What output voltage does the LD1117-3.3 provide?

The LD1117-3.3 provides a fixed 3.3V output.

What is the operating temperature range?

-40°C to 125°C junction temperature.

What package is the LD1117-3.3 available in?

Surface-mount SOT-223-3L (TO-261-4, TO-261AA).

What is the dropout voltage at 1A?

Typical dropout voltage is 1.2V at 1A output current.

Does the LD1117-3.3 include protection features?

Yes, it includes thermal shutdown and current limiting.

What is the output voltage accuracy?

Output accuracy is within ±1.5% maximum.

What is the PSRR of the LD1117-3.3?

PSRR is 75dB at 120Hz.

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