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Product Detailed Parameters
- Description：IC REG LINEAR 5V 100MA SOT89
- Series：-
- Mfr：Diotec Semiconductor
- Package：Bulk
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.2V @ 100mA
- Current - Output：100mA
- Current - Quiescent (Iq)：6 µA
- Current - Supply (Max)：-
- PSRR：61dB ~ 45dB (1kHz ~ 10kHz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89
- Grade：-
- Qualification：-
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Overview
The LDI8233-05U is a fixed-output linear voltage regulator from Diotec Semiconductor, housed in an SOT-89-3 package. It provides a nominal output voltage of 5 V with a tolerance of ±1%. The device supports a maximum output current of 100 mA and operates within an input voltage range up to 40 V. Key electrical specifications include a typical dropout voltage of 1.2 V at full load, a quiescent current of 5 µA, and a power dissipation rating of 1.25 W. It features a line regulation of 0.01 %/V and load regulation of 11 mV. The unit offers a typical Power Supply Rejection Ratio (PSRR) of 45 dB and functions reliably across a temperature range of -40 °C to +85 °C.
Feature Summary
- Fixed positive output voltage configuration
- Low quiescent current consumption
- High power supply rejection ratio
- Compact surface-mount packaging
Applications
- Battery-powered portable devices
- Microcontroller power supplies
- Sensor interface circuits
- General-purpose low-noise regulation
Procurement Notes
Verify the specific suffix 'U' against the manufacturer's latest datasheet to confirm package type and tape/reel specifications. Ensure thermal management design accounts for the 1.25 W power dissipation limit under expected load conditions. Confirm RoHS compliance status via official documentation before integration into regulated assemblies.
Selection Notes
Select this component when a stable 5 V rail is required from higher input voltages up to 40 V. The SOT-89-3 package suits applications needing moderate current handling with efficient heat dissipation compared to smaller packages. Consider the 5 µA quiescent current for battery life optimization in low-power standby modes.
Part Context
This part belongs to the LDI8233 series of low-dropout regulators by Diotec Semiconductor. The series focuses on providing reliable linear regulation in compact form factors suitable for space-constrained electronic designs. The LDI8233-05U specifically targets standard 5 V logic systems requiring stable performance over varying load and line conditions.
Replacement Considerations
Check for direct pin-compatible alternatives within the same LDI8233 family offering different output voltages or current ratings. Verify that any substitute maintains the SOT-89-3 footprint and meets the 40 V input and 100 mA output requirements.
