L5300GJTR

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

The L5300GJTR is a low dropout linear regulator with microprocessor control functions, including power on reset, low voltage reset, early warning, and ON/OFF control. It features a typical quiescent current of 55 μA in very low output current mode when enabled, dropping to 5 μA when disabled. The device provides a fixed 5 V output with high accuracy (2%) maintained over wide temperature, line, and load variations. It supports an operating DC supply voltage range from 5.6 V to 40 V and delivers up to 300 mA of output current. The regulator requires only a low value ceramic capacitor (≥220 nF) for stability and includes thermal shutdown and short circuit protection.

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

• Integrated microprocessor control functions including power on reset, low voltage reset, and early warning circuits.
• Very low consumption mode with programmable enable input for disabling the voltage regulator.
• High output voltage accuracy maintained across wide temperature ranges and load variations.
• Requires only low value ceramic capacitors for stability, simplifying external component requirements.

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

• Automotive systems requiring AEC-Q100 qualified components
• Microprocessor power supply regulation
• Low dropout voltage regulation in automotive electronics

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

Verify the specific suffix 'GJTR' against official STMicroelectronics documentation to confirm package type and tape/reel specifications. Confirm RoHS and REACH compliance status through the manufacturer's product page or datasheet. Check for any End-of-Life notices or Product Change Notifications as availability may be limited. Ensure the ordering part number matches the exact electrical characteristics required for your design.

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

Select this component when a fixed 5 V output with high accuracy is needed for automotive applications. Consider its AEC-Q100 qualification for reliability in harsh environments. Evaluate the 300 mA current capability against load requirements. Verify that the input voltage range of 5.6 V to 40 V suits the system supply. Check if the integrated reset and early warning features meet system monitoring needs.

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

The L5300GJTR belongs to the L5300GJ series of automotive low dropout regulators from STMicroelectronics. This series is designed for robust performance in automotive environments, offering integrated safety features like thermal shutdown and short circuit protection. The device is part of ST's portfolio of power management ICs tailored for microprocessor control and automotive electronics.

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

Check STMicroelectronics documentation for officially confirmed substitute part numbers within the L5300 family or equivalent automotive-grade LDOs. Verify pin compatibility and electrical specifications before substitution.

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

What is the minimum output capacitor required for stability?

Only a low value ceramic capacitor equal to or above 220 nF is required on the output for stability.

How does the quiescent current vary with the enable state?

The typical quiescent current is 55 μA in very low output current mode when enabled, and it drops to 5 μA when the regulator is not enabled.