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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1.35A SOT89
- Series：-
- Mfr：Diotec Semiconductor
- Package：Bulk
- 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)：1.25V @ 1A
- Current - Output：1.35A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：-
- Control Features：Current Limit
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89
- Grade：-
- Qualification：-
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Overview
The LDI1117-3.3U is a positive fixed linear voltage regulator manufactured by Diotec Semiconductor, designed for surface-mount applications in the SOT-89 package. It delivers a nominal output voltage of 3.3V with a maximum continuous output current of 1.35A. The device supports a maximum input voltage of 15V and features a typical dropout voltage of 1.25V at 1A load. Internal protection mechanisms include over-current limiting and thermal shutdown to safeguard against fault conditions.
Feature Summary
- Integrated over-current and over-temperature protection circuits
- Fixed positive output voltage configuration
- Surface-mount construction in compact SOT-89 housing
Applications
- Portable battery-powered equipment power supplies
- Embedded system logic voltage regulation
- General-purpose low-dropout power management
Procurement Notes
Verify component authenticity through authorized distribution channels. Confirm RoHS3 compliance status and moisture sensitivity level prior to assembly. Ensure storage conditions meet manufacturer specifications to prevent degradation. Cross-reference datasheet electrical characteristics with specific application requirements before finalizing procurement orders.
Selection Notes
Select this regulator when a stable 3.3V supply is required from inputs up to 15V. The SOT-89 package suits space-constrained designs needing moderate current capacity. Evaluate thermal dissipation capabilities based on expected ambient temperatures and load currents to ensure operation within the specified junction temperature range.
Part Context
This component belongs to the LDI1117 series of low-dropout regulators produced by Diotec Semiconductor. The series offers various fixed output voltages across different package options. The 'U' suffix indicates the SOT-89 surface-mount package variant, distinguishing it from other form factors within the same product family.
FAQ
What is the maximum input voltage rating?
The maximum input voltage is rated at 15V.
Does the device include thermal protection?
Yes, the LDI1117-3.3U includes built-in thermal shutdown protection.
