L4937NL

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The L4937NL is a dual linear voltage regulator manufactured by STMicroelectronics, housed in a 7-HEPTAWATT through-hole package. It provides two fixed positive outputs: one at 50mA and another at 500mA. The device operates with an input voltage up to 25V and delivers a fixed output of 5V. Key electrical parameters include a maximum dropout voltage of 0.4V at 50mA and 0.6V at 500mA. It features integrated overtemperature and short-circuit protection, along with enable and reset control characteristics. The component supports an operating temperature range from -40°C to 125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Dual output configuration providing independent 50mA and 500mA current capabilities
• Integrated thermal shutdown and short-circuit protection for enhanced reliability
• Logic-controlled enable and reset functions for system power management

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• General purpose linear power regulation
• Embedded systems requiring dual voltage rails
• Industrial control circuits

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific ordering suffix and manufacturer lot code against the official datasheet to ensure compatibility with your design requirements. Confirm that the component status is acceptable for your production timeline, as availability may vary. Check for any recent revisions to the specification document that might affect pinout or electrical characteristics before finalizing procurement.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a dual-output linear regulator is required with high current capability on one rail. Ensure the input voltage does not exceed 25V and that the thermal dissipation requirements of the 7-HEPTAWATT package are met. Verify that the fixed 5V output meets the load requirements for both channels.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The L4937NL belongs to the L4937 family of low-dropout regulators from STMicroelectronics. It is designed for applications needing multiple regulated voltages from a single source. The part is distinct from other L49xx series devices by its specific dual-output configuration and current ratings.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Check for direct pin-to-pin replacements within the L4937 family or similar dual-output LDOs from STMicroelectronics. Verify that alternative parts match the 7-HEPTAWATT package and electrical specifications.