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Product Detailed Parameters
- Description：IC REG LINEAR 1.2V 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)：1.2V
- 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 Diotec Semiconductor LDI1117-1.2U is a fixed-output Low Dropout (LDO) linear voltage regulator housed in a SOT-89 surface-mount package. It provides a nominal output voltage of 1.2V with a maximum output current capability of 1.35A. The device supports a maximum input voltage of 15V and maintains a typical dropout voltage of 1V at full load, with a maximum specified dropout of 1.25V at 1A. Internal protection mechanisms include thermal shutdown and current limiting. The component operates within a junction temperature range of -40°C to +125°C and complies with RoHS3 standards.
Feature Summary
- Fixed 1.2V output configuration for stable low-voltage power supply applications
- Integrated thermal shutdown and overcurrent protection for enhanced reliability
- Low dropout performance enabling efficient regulation from higher input rails
- Surface-mount SOT-89 packaging optimized for compact circuit board layouts
Applications
- Portable battery-powered electronic devices requiring regulated 1.2V logic levels
- Embedded systems utilizing microcontrollers or digital signal processors
- Communication equipment needing stable low-noise power supplies
- Industrial control modules operating under varying thermal conditions
Procurement Notes
Verify the specific suffix 'U' corresponds to the SOT-89 package variant when sourcing, as the LDI1117 series also utilizes SOT-223 packages denoted by different suffixes such as 'H'. Confirm compliance requirements including RoHS3 status and Moisture Sensitivity Level (MSL) ratings prior to integration into production assemblies to ensure supply chain alignment with manufacturing processes.
Selection Notes
Select this component when a fixed 1.2V rail is required with up to 1.35A load capacity in a space-constrained design. Ensure the input voltage does not exceed the 15V absolute maximum rating. Consider the thermal dissipation capabilities inherent to the SOT-89 package relative to the expected ambient temperature and load current to maintain operation within the specified junction temperature limits.
Part Context
This part belongs to the LDI1117 family of low-dropout regulators manufactured by Diotec Semiconductor. The family offers various fixed output voltages and utilizes either SOT-223 or SOT-89 packages depending on the specific model suffix. These regulators are designed for general-purpose power management tasks where efficiency and stability are prioritized over high-frequency switching noise.
FAQ
What is the maximum input voltage for the LDI1117-1.2U?
The maximum input voltage supported by this regulator is 15V.
Does the LDI1117-1.2U include protection features?
Yes, it includes internal thermal shutdown and current limiting protection circuits.
