L4988MD

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

The L4988MD is an obsolete automotive-grade monolithic integrated 5V voltage regulator featuring a P-channel MOS output stage. It supports currents up to 200mA with low dropout characteristics and operates within a DC supply voltage range of 5.6V to 31V, handling input transients up to 40V. The device includes pre-trimmed reference voltage for high precision, reset circuit sensing down to 1V, programmable watchdog timer, and thermal/short-circuit protection. Qualified under AEC-Q100, it functions in temperatures from -40°C to 150°C.

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

• AEC-Q100 qualified for automotive reliability
• Integrated microprocessor control functions including reset and watchdog
• P-channel MOS architecture for low dropout performance
• Comprehensive protection against short circuit and overtemperature

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

• Supplying microprocessor systems in automotive applications
• Automotive body and convenience electronics
• Powertrain and chassis control units

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

This component is officially listed as obsolete by the manufacturer. Verification of current availability requires checking authorized distributors for remaining stock or surplus channels. Designers must confirm end-of-life status and plan for immediate migration to alternative components to ensure long-term supply chain stability and production continuity.

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

Select this part only if legacy compatibility is strictly required and no direct functional equivalent is available. Due to its obsolete status, new designs should prioritize active replacements with identical pinouts and electrical specifications. Verify that the 200mA current rating and 5V output align precisely with the target system's power budget and regulatory requirements.

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

The L4988MD belongs to STMicroelectronics' L498x series of low-dropout linear regulators designed specifically for automotive environments. This family integrates essential microprocessor supervision features alongside voltage regulation, targeting robust power management solutions for critical vehicle electronic control units requiring high reliability and wide temperature operation.

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

Consult official replacement guides for obsolete products. Potential substitutes include the L4979MD or other active members of the L498x family, provided they meet the specific 200mA current and package requirements.