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Product Detailed Parameters
- Description：IC REG LINEAR 1.5V 1.35A 8-SO
- Series：-
- Mfr：Diotec Semiconductor
- Package：Bulk
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：1.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.25V @ 1A
- Current - Output：1.35A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：75dB (120Hz)
- Control Features：Current Limit
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SO
- Grade：-
- Qualification：-
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Overview
The LDI1117-1.5D is a fixed positive linear voltage regulator IC from Diotec Semiconductor, delivering a nominal 1.5V output with a maximum current capability of 1.35A. It operates within a maximum input voltage range of 20V and features a typical dropout voltage of 1.25V at full load. The device incorporates internal protection mechanisms including thermal overload shutdown and current limiting to ensure reliability under fault conditions.
Feature Summary
- Fixed 1.5V output configuration for stable power supply applications
- Integrated thermal overload and current limit protection circuits
- Low dropout performance suitable for battery-powered systems
Applications
- Portable electronic devices requiring efficient linear regulation
- Battery-operated equipment needing low quiescent current operation
- General-purpose power management in embedded systems
Procurement Notes
Verify the specific suffix 'D' indicates the SO-8 package variant distinct from other LDI1117 packages. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure input voltage does not exceed the 20V absolute maximum rating during operation.
Selection Notes
Select this component when a fixed 1.5V rail is required with up to 1.35A load current. The SO-8 surface mount package offers compact integration compared to larger through-hole options. Consider thermal dissipation requirements given the linear regulation topology and potential power loss across the dropout voltage.
Part Context
This part belongs to the LDI1117 family of low-dropout regulators produced by Diotec Semiconductor. The series includes various fixed voltage outputs and adjustable versions housed in different packages such as SOT-223 and TO-263. The LDI1117-1.5D specifically utilizes an 8-pin SOIC footprint for board space optimization.
Replacement Considerations
Direct substitutes include other LDI1117-1.5 variants like LDI1117-1.5H (SOT-223) or LDI1117-1.5U (SOT-89) if pin compatibility allows. Cross-brand equivalents must match the 1.5V output, 1.35A current rating, and SO-8 package dimensions.
