E-L6932D1.8

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

The L6932D1.8 is a high-performance ultra-low dropout linear regulator manufactured by STMicroelectronics, designed to deliver a fixed 1.8V output with a maximum current of 2A. It operates within an input voltage range of 2V to 14V and features a maximum drain-source on-resistance of 200mΩ. The device incorporates internal short circuit protection and thermal shutdown, which limits the junction temperature to 150°C. It includes enable and power good control functions, ensuring reliable operation in portable applications.

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

• Integrates an internal N-channel MOSFET for efficient DC-DC conversion between 2.5V and 1.5V at 2A.
• Provides precise voltage regulation accuracy of 1% across operating conditions.
• Includes open-drain Power Good function that detects if output voltage falls below 90% of the programmed level.

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

• Motherboards
• Mobile PC systems
• Hand-held instruments
• PCMCIA cards
• Processors I/O supply

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

Verify the specific ordering suffix (TR) against the manufacturer's datasheet to confirm tape-and-reel packaging requirements. Confirm RoHS compliance status and lead times directly with authorized distributors or STMicroelectronics representatives, as availability may vary based on production lifecycle stages.

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

Select this component when a stable 1.8V rail is required from inputs up to 14V. Ensure input capacitors exceed 10µF and output capacitors are chosen carefully to maintain loop stability, particularly with low ESR ceramic types. Consider thermal dissipation constraints given the SO-8 package limitations under continuous high-load conditions.

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

This part belongs to the L6932 family of Ultra Low Drop Output linear regulators. The series offers various fixed voltages (1.5V, 1.8V, 2.5V) and an adjustable version (1.2V to 5V). All variants share the same 8-pin SOIC package and core protection features, differing primarily in their internal reference voltage settings.

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

L6932D1.5TR

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

How does the device handle short circuit conditions?

The L6932D1.8 features a fixed current limit of 2.5A (±8%) to control current during short circuits, sensed internally within the power MOSFET to limit power dissipation.

What is the function of the PGOOD pin?

The PGOOD pin is an open-drain output that indicates the status of the regulated voltage. It is forced low if the output voltage drops below 90% of the programmed value.