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Product Detailed Parameters
- Description：IC REG LIN NEG ADJ 1.5A TO220
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Negative
- 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：1.5A
- Current - Quiescent (Iq)：-
- Current - Supply (Max)：-
- PSRR：77dB ~ 60dB (120Hz)
- Control Features：-
- Protection Features：Over Temperature, Short Circuit
- Operating Temperature：-25°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
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Overview
The LM237SP is a three-terminal adjustable negative voltage regulator from STMicroelectronics, part of the LM137 series. It provides an output current exceeding 1.5 A with an adjustable output voltage range from -1.2 V to -37 V. The device features typical load regulation of 0.3%/V and line regulation of 0.01%/V. It includes built-in current limit, thermal overload protection, and safe area protection. The unit utilizes standard three-lead transistor packages for mounting.
Feature Summary
- Adjustable output voltage capability across a wide negative range
- Integrated overload protection including current limit and thermal shutdown
- High ripple rejection performance for stable power delivery
Applications
- Negative power supply rails in electronic systems
- Battery-powered equipment requiring adjustable negative voltage
- Industrial control circuits needing reliable negative regulation
Procurement Notes
Verify the specific suffix 'SP' against the official STMicroelectronics datasheet to confirm package type and temperature grade. Ensure the ordering part number matches the exact electrical specifications required for the design. Cross-reference with authorized distributors to confirm availability and authenticity of the component.
Selection Notes
Select this component when a negative adjustable voltage source is required with high current capacity. It serves as a direct functional replacement for other LM137/LM237 series regulators. Consider the thermal management requirements due to the linear regulation nature and the specified output current capabilities.
Part Context
This device belongs to the LM137 family of adjustable negative voltage regulators. It shares core functionality with the LM237 and LM337 series, differing primarily in temperature ranges and package options. The SP suffix typically denotes a specific plastic package variant within the STMicroelectronics lineup.
Replacement Considerations
Compatible substitutes include the LM337SP for positive voltage applications or other LM137/LM237 variants from different manufacturers. Verify pinout compatibility and thermal characteristics before substitution.
