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Product Detailed Parameters
- Description：IC REG LINEAR 8.5V 500MA DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：8.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：1.5 mA
- Current - Supply (Max)：12 mA
- PSRR：72dB ~ 57dB (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：-
Download product information
Overview
The LF85CDT-TR is a fixed-output linear voltage regulator manufactured by STMicroelectronics, delivering a nominal 8.5 V output with a maximum continuous current of 500 mA. It operates within an input voltage range of 9.5 V to 16 V and features a typical dropout voltage of 0.7 V at full load. The device incorporates internal overcurrent and thermal overload protection mechanisms. It is housed in a DPAK (TO-252-3) surface-mount package and supports operation across an extended temperature range from -40°C to +125°C.
Feature Summary
- Provides stable regulated power for sensitive electronic circuits requiring a fixed 8.5 V supply rail.
- Integrates comprehensive protection against short circuits and excessive junction temperatures to ensure operational reliability.
- Designed for efficient space-constrained applications through its compact surface-mount DPAK packaging.
Applications
- Power management sections in automotive electronics systems
- Industrial control equipment requiring robust voltage regulation
- Consumer electronic devices utilizing low-dropout regulators
Procurement Notes
Verify component authenticity through authorized distribution channels due to the part's end-of-life status. Confirm that the specific revision matches design requirements, as manufacturing processes may have changed during production. Ensure proper handling procedures are followed for ESD-sensitive components. Cross-reference datasheet specifications with current inventory quality certifications before integration into final assemblies.
Selection Notes
Select this component when a fixed 8.5 V output is required with moderate current demands up to 500 mA. Consider the thermal performance characteristics inherent to the DPAK package for heat dissipation planning. Evaluate the input voltage headroom relative to the minimum dropout requirement to maintain regulation under varying load conditions. Assess compatibility with existing PCB layout constraints and mounting preferences for surface-mount technology.
Part Context
This regulator belongs to the LFxx series of low-dropout linear voltage regulators produced by STMicroelectronics. The series offers various fixed output voltages tailored for diverse power management needs. These components are engineered to provide clean, stable power supplies for analog and digital circuits while maintaining high line and load regulation performance across wide operating temperature ranges.
Replacement Considerations
The LF85CDT-TR is listed as obsolete. Verify if the LF85CDT-TRY variant serves as a direct functional substitute or check for updated revisions within the same product family. Consult official manufacturer documentation to confirm pinout compatibility and electrical parameter equivalence before substituting.
