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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 100MA 8-SOIC
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：1.2V
- Voltage - Output (Max)：37V
- Voltage Dropout (Max)：-
- Current - Output：100mA
- Current - Quiescent (Iq)：-
- Current - Supply (Max)：-
- PSRR：80dB ~ 65dB (120Hz)
- Control Features：-
- Protection Features：Over Temperature, Short Circuit
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The LM217LD is a monolithic integrated circuit from STMicroelectronics, functioning as a positive adjustable voltage regulator. It is housed in an 8-SOIC surface-mount package and supports an output current of up to 100 mA. The device provides an adjustable output voltage range spanning from 1.2 V to 37 V. Key electrical specifications include a maximum input voltage of 40 V and a power supply rejection ratio (PSRR) ranging from 80 dB to 65 dB at 120 Hz. The component operates within a temperature range of -40°C to 125°C.
Feature Summary
- Provides positive adjustable voltage regulation with a wide output range selectable via a resistive divider.
- Includes complete protection features such as internal current limiting, thermal shutdown, and safe operating area control.
- Supports floating operation for high-voltage applications.
Applications
- Battery chargers
- Local on-card regulation
- Adjustable power supplies
Procurement Notes
Verify the specific suffix 'LD' against the manufacturer's official datasheet to confirm the 8-SOIC package and 100 mA current rating. Ensure the ordering part number matches the required tape-and-reel or cut-tape configuration. Confirm RoHS compliance status and moisture sensitivity level prior to procurement.
Selection Notes
Select this component when a compact surface-mount solution is required for low-to-medium current applications. It serves as a direct replacement for fixed regulators, reducing inventory needs by allowing precise voltage adjustment. Consider the thermal performance of the SO-8 package for heat dissipation requirements in enclosed designs.
Part Context
The LM217LD belongs to the LM217 family of adjustable linear regulators manufactured by STMicroelectronics. This series is designed to replace fixed linear regulators, offering flexibility in voltage selection. The LM217 variant specifically targets higher current capabilities compared to the lower-current LM217L series, while maintaining similar functional characteristics and protection features.
Replacement Considerations
The LM317 is a widely recognized equivalent from various manufacturers. Verify pin compatibility and thermal resistance differences before substitution. Other LM217 variants like LM217T or LM217MDT offer different packages and current ratings but share the same core functionality.
