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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 800MA TO220
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.2V @ 800mA
- Current - Output：800mA
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：75dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：0°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
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Overview
The LD1117V33-DG is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 3.3 V output with a maximum current capacity of 800 mA. The device supports an input voltage range up to 15 V and features a typical dropout voltage of 1.2 V at full load. It incorporates internal thermal overload and short-circuit current limiting protections. The component operates within a temperature range of 0°C to 125°C and utilizes a surface-mount TO-263 (D²PAK) package.
Feature Summary
- Fixed 3.3 V output voltage with ±1% tolerance
- Internal thermal overload and short-circuit protection
- Low dropout voltage for high efficiency
- Surface-mount D²PAK package for space optimization
Applications
- Battery-powered systems requiring efficient regulation
- General-purpose power supplies
- Post-regulation for switching regulators
Procurement Notes
Verify the specific suffix 'DG' against the manufacturer's official datasheet to confirm the exact package type, as variations exist within the LD1117 family. Ensure the required operating temperature range aligns with the industrial specification. Confirm RoHS compliance status prior to final procurement decisions.
Selection Notes
Select this component when a fixed 3.3 V rail is required with moderate current demands up to 800 mA. The surface-mount D²PAK package is suitable for applications prioritizing thermal performance and board space efficiency over through-hole mounting options.
Part Context
This part belongs to the LD1117 series of positive low-dropout regulators from STMicroelectronics. The series offers both adjustable and fixed voltage versions in various packages including SOT-223, TO-220, and SO-8. The LD1117V33-DG specifically denotes the 3.3 V fixed output variant in the D²PAK surface-mount configuration.
