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Product Detailed Parameters
- Description：IC REG LINEAR 8.5V 500MA PPAK
- 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：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Supplier Device Package：PPAK
- Grade：-
- Qualification：-
Download product information
Overview
The LF85CPT-TR is an 8.5V very low drop voltage regulator manufactured by STMicroelectronics, featuring a built-in on-off switch. It delivers a fixed output of 8.5 V with a maximum current of 0.5 A. The device operates within an input voltage range of -0.5 V to 40 V and maintains a typical dropout voltage of 0.45 V. Designed for surface-mount applications in TO-252 packages, it supports an operating temperature range from -40°C to +125°C.
Feature Summary
- Integrated on-off switch functionality for system power management
- Very low dropout voltage (0.45 V) for efficient power regulation
- Low quiescent current suitable for battery-powered systems
- Fixed 8.5 V output with 0.5 A load capability
Applications
- Battery-powered electronic systems
- Low-noise power supply circuits
- Low-power application environments
Procurement Notes
Verify the specific package variant and suffix against official datasheets, as distribution listings may vary. Confirm end-of-life status or obsolescence notices directly with the manufacturer before finalizing procurement plans. Ensure compatibility with existing thermal management designs given the DPAK/TO-252 form factor.
Selection Notes
Select this component when an integrated shutdown feature is required alongside stable 8.5 V regulation. The low dropout characteristic makes it suitable for inputs close to the output voltage. Verify that the 0.5 A current rating meets the load requirements and that the thermal performance in the chosen package is adequate for the expected dissipation.
Part Context
This part belongs to the LFXX series of very low drop regulators from STMicroelectronics. The series offers various fixed output voltages optimized for low-noise and low-power applications. The LF85CPT-TR specifically provides the 8.5 V variant with added switch control, distinguishing it from standard LDOs without shutdown capabilities.
Replacement Considerations
Check for direct pin-compatible substitutes within the LF series offering different output voltages if system requirements change. Verify availability of alternative manufacturers' 8.5V LDOs with similar dropout and current ratings, ensuring electrical parameters match the original design constraints.
