L7980ATR

Voltage Regulators - DC DC Switching Regulators Overview

The L7980ATR is a step-down switching regulator from STMicroelectronics, housed in an 8-pin HSOP EP package. It features an embedded power MOSFET capable of delivering up to 2 A output current. The device operates with an input voltage range of 4.5 V to 28 V and provides an adjustable output voltage from 600 mV to the input voltage level. It integrates a fixed 250 kHz switching frequency oscillator, which can be externally adjusted up to 1 MHz. Key electrical specifications include a maximum operating temperature of +150 °C and a minimum of -40 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates an embedded power MOSFET for high-efficiency step-down conversion
• Features internal soft-start and enable functions for controlled startup
• Supports low dropout operation with 100% duty cycle capability
• Includes comprehensive protection against overcurrent and thermal overload

Voltage Regulators - DC DC Switching Regulators Applications

• Evaluation using STEVAL-ISA091V1 demonstration board
• General-purpose DC-DC step-down power supply designs
• Embedded systems requiring adjustable voltage regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'ATR' confirms the tape-and-reel packaging format and HSOP-EP body style. Confirm that the component meets RoHS compliance requirements as indicated by manufacturer documentation. Ensure compatibility with surface-mount assembly processes suitable for the specified package dimensions. Cross-reference ordering codes with official STMicroelectronics catalogs to avoid substitution errors.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for input voltages up to 28 V. The adjustable switching frequency allows optimization for external component size versus noise performance. Consider the thermal characteristics of the HSOP EP package for heat dissipation needs. Verify that the 2 A current limit aligns with the maximum load requirements of the target application circuit.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the L7980 series of switching regulators designed for efficient power management. It shares functional similarities with other members like the L7980TR, differing primarily in package type and reel configuration. The series is categorized under PMIC - Power Management ICs, specifically voltage converters. Development tools such as the STEVAL-ISA091V1 are available to assist in design validation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material.