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Product Detailed Parameters
- Description：LDI734C1.8EN
- Series：LDI734CxxEN
- Mfr：Diotec Semiconductor
- Package：Bulk
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.21V @ 300mA
- Current - Output：700mA
- Current - Quiescent (Iq)：60 µA
- Current - Supply (Max)：-
- PSRR：68dB ~ 40dB (100Hz ~ 10kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
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Overview
The LDI734C1.8EN is a fixed-output linear voltage regulator manufactured by Diotec Semiconductor, classified as a capacitor-free Low Dropout (LDO) VR. It provides a nominal output voltage of 1.8 V with a tolerance range of 1.78 V to 1.82 V. The device supports a maximum output current of 300 mA and operates within an input voltage range up to 6 V. Key electrical specifications include a quiescent current of 30 µA and a thermal operating range from -50 °C to +150 °C. The component utilizes a DFN-4 surface-mount package.
Feature Summary
- Capacitor-free design eliminates the need for external output capacitors, simplifying circuit layout.
- Fixed positive output voltage regulation ensures stable power delivery without external feedback adjustments.
- Extended thermal performance allows reliable operation in high-temperature environments up to 150 °C.
Applications
- Portable battery-powered electronic devices requiring efficient voltage regulation
- Embedded systems utilizing low-quiescent-current regulators for power conservation
- Industrial control modules operating under extended temperature conditions
Procurement Notes
Verify the specific suffix EN against official Diotec documentation to confirm RoHS compliance and lead-free status. Confirm that the DFN-4 package dimensions match your PCB footprint requirements. Ensure the selected variant meets the required input voltage headroom for your specific application scenario.
Selection Notes
Select this component when a fixed 1.8 V rail is required with minimal external components. The capacitor-free feature reduces bill of materials cost and board space. Consider the 300 mA current limit and 6 V maximum input voltage to ensure adequate margin for your system's load and supply variations.
Part Context
This part belongs to the LDI734 series of capacitor-free LDO regulators from Diotec Semiconductor. The series offers various fixed output voltages while maintaining consistent package and thermal characteristics. The LDI734C1.8EN specifically targets applications needing a compact, stable 1.8 V source with low static current consumption.
Replacement Considerations
Consult Diotec technical support or authorized distributors for verified cross-reference data. Do not substitute based on generic parameter matching alone; verify pinout compatibility and thermal resistance values.
