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Product Detailed Parameters
- Description：IC REG LINEAR 3.5V 500MA DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：3.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：1 mA
- Current - Supply (Max)：12 mA
- PSRR：79dB ~ 60dB (120Hz ~ 10kHz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Grade：-
- Qualification：-
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Overview
The LF35ABDT-TR is a linear voltage regulator IC from STMicroelectronics, providing a fixed positive output of 3.5V with a maximum output current of 500mA. It features a low dropout voltage of 0.35V at 200mA and supports a maximum input voltage of 16V. The device is housed in a surface-mount DPAK package, measuring 6.6mm in length, 6.2mm in width, and 2.4mm in height. It operates within a temperature range up to 125°C and includes internal protections against overcurrent and thermal overload.
Feature Summary
- Provides a fixed positive output voltage for stable power supply applications
- Features very low dropout voltage characteristics for efficient operation
- Includes built-in thermal overload and short-circuit protection mechanisms
Applications
- Battery-powered equipment requiring stable low-voltage regulation
- Portable consumer electronics devices
- General-purpose linear power supply circuits
Procurement Notes
Verify the exact part number LF35ABDT-TR against official STMicroelectronics documentation to ensure compatibility. Confirm that the DPAK package and 3.5V fixed output align with your circuit design requirements. Check for RoHS compliance status if required by your manufacturing standards. Ensure the supplier provides genuine components with traceable origins to avoid counterfeit risks.
Selection Notes
Select this component when a fixed 3.5V output is required with moderate current demands up to 500mA. Consider its low dropout performance for applications where input voltage is close to the output level. Evaluate the DPAK package suitability for your PCB layout constraints and thermal management needs compared to alternative regulator packages.
Part Context
This component belongs to the LFxx series of very low drop voltage regulators manufactured by STMicroelectronics. These regulators are designed for applications requiring high ripple rejection and stable performance under varying load conditions. The series typically includes various fixed output voltages to support diverse electronic system requirements.
Replacement Considerations
Compatible substitutes include other 3.5V linear regulators in similar packages such as the LM317 configured for 3.5V or equivalent parts from manufacturers like Texas Instruments or ON Semiconductor. Verify pinout compatibility and electrical specifications before substitution.
