LT1580IQ#PBF

Special Purpose Regulators Overview

The LT1580IQ#PBF is a positive linear regulator manufactured by Analog Devices Inc., belonging to the LT1580 series. It is classified as a Low Dropout (LDO) Voltage Regulator designed for high-current applications. The device features an adjustable output voltage and provides a maximum output current of 7 A. It utilizes a DDPAK-5 surface-mount package. Key electrical specifications include a typical power supply rejection ratio (PSRR) of 80 dB, a quiescent operating current of 10 mA, and a line regulation of 1 mV. The unit supports a wide operating temperature range from 0°C to +150°C.

Special Purpose Regulators Feature Summary

• Provides high continuous output current capability up to 7 A for demanding load requirements.
• Features very low dropout voltage characteristics to maintain regulation under minimal input-output differentials.
• Offers adjustable output voltage flexibility for custom power rail configurations.
• Delivers high ripple rejection performance suitable for noise-sensitive analog circuits.

Special Purpose Regulators Applications

• High-current point-of-load regulation in industrial systems
• Power distribution networks requiring stable positive voltage rails
• Battery-powered equipment needing efficient linear regulation
• Communication infrastructure power supplies

Special Purpose Regulators Procurement Notes

Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm the specific IQ grade and PBF suffix match project requirements. Check for RoHS compliance documentation. Ensure storage conditions prevent moisture damage prior to soldering. Validate that the DDPAK-5 package footprint aligns with the target PCB design.

Special Purpose Regulators Selection Notes

Select this component when a fixed voltage LDO is insufficient due to specific voltage requirements. The 7 A current rating distinguishes it from lower-capacity regulators in the same family. Consider thermal management strategies given the power dissipation at high currents. Verify that the input voltage range accommodates the required dropout margin across the full load and temperature spectrum.

Special Purpose Regulators Part Context

This part belongs to the LT1580 family of fast-response low dropout positive regulators. The series includes variants with different current ratings such as 4.6 A and 3 A models. The LT1580 series is designed to replace older generation regulators while offering improved transient response and lower dropout voltages. It serves as a core power management solution for analog and mixed-signal applications.

Special Purpose Regulators Replacement Considerations

LT1580CQ#PBF: Similar 7A adjustable LDO in DDPAK-5 package with commercial temperature range.

Special Purpose Regulators FAQ

What is the maximum output current of the LT1580IQ#PBF?

The LT1580IQ#PBF supports a maximum output current of 7 A.

Is the output voltage of the LT1580IQ#PBF fixed or adjustable?

The output voltage is adjustable, allowing users to set the desired voltage level using external resistors.

What is the typical PSRR for this regulator?

The typical Power Supply Rejection Ratio (PSRR) is 80 dB.