LM9072S

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

The LM9072S is a dual tracking low-dropout (LDO) system regulator manufactured by Texas Instruments. It integrates two positive fixed voltage regulators within a single package, providing independent output channels with specified current capabilities of 350mA and 80mA respectively. The device features an active-low delayed reset output flag for power management monitoring. It includes comprehensive protection mechanisms such as over-current protection, short-circuit protection, thermal shutdown, and input overvoltage protection. The component supports enable control functionality and is designed to address the specific requirements of automotive applications.

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

• Dual tracking LDO architecture with independent output channels
• Integrated active-low delayed reset output flag
• Comprehensive protection including over-current, short-circuit, and thermal shutdown
• Supports enable control and input overvoltage protection

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

• Automotive electronic systems
• System voltage regulation requiring dual rails
• Power management units with reset monitoring needs

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

Verify the exact output voltage configuration and tolerance specifications against the official datasheet prior to procurement, as variations may exist based on manufacturing lot or specific suffix designations. Confirm that the DDPAK/TO-263-9 package type aligns with your PCB footprint requirements. Ensure that the thermal performance characteristics meet the thermal dissipation requirements of your intended application environment, particularly given the integrated thermal shutdown feature. Cross-reference the part number with the manufacturer's latest documentation to confirm availability and any potential obsolescence notices.

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

Select this component when a dual-output linear regulation solution is required for automotive or industrial applications. The dual tracking capability allows for synchronized power-up and power-down sequences, which is critical for complex system resets. Consider the 350mA and 80mA output currents to ensure they match the load requirements of the target circuits. The inclusion of a reset flag simplifies system supervision logic, reducing the need for external comparator components. Evaluate the thermal performance in the context of the expected ambient temperature and board layout constraints.

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

The LM9072S belongs to the family of low-dropout system regulators from Texas Instruments, previously under National Semiconductor. These devices are engineered to provide stable voltage regulation with high precision and robust protection features. The dual-channel design distinguishes it from single-output LDOs, offering a compact solution for systems requiring multiple regulated voltages. The integration of reset flags and tracking capabilities positions it within the power management IC category, specifically targeting applications where power sequencing and system reliability are paramount.

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

Consult the official Texas Instruments replacement guide for verified substitute part numbers. Direct replacements must maintain the dual-output LDO architecture, similar current ratings, and compatible package dimensions. Verify that any alternative component offers equivalent or superior protection features and reset flag functionality to ensure system compatibility without redesign.