L296

Voltage Regulators - DC DC Switching Regulators Overview

The L296 is a step-down power switching regulator delivering up to 4 A output current with an adjustable voltage range from 5.1 V to 40 V. It operates at switching frequencies up to 200 kHz, enabling efficient conversion of input voltages between 9 V and 46 V. The device features soft start, thermal shutdown, and a reset output for microprocessors. It requires very few external components and supports remote inhibit and PWM synchronization inputs.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated soft start and thermal protection mechanisms
• Dedicated reset output for microprocessor systems
• PWM comparator input for multi-chip synchronization
• Voltage sense input and SCR drive for crowbar protection

Voltage Regulators - DC DC Switching Regulators Applications

• Microprocessor power supply regulation
• Industrial DC-DC buck conversion
• Automotive power management systems
• Multi-chip synchronous converter configurations

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific package variant (L296HT or L296P) required for the design, as pinouts and current limiting features differ. Confirm component availability status, as this series may be obsolete or superseded by newer STMicroelectronics buck converters. Ensure the selected package matches the thermal requirements of the application.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select the L296P if external programmable current limiting is required; otherwise, use the standard L296. Evaluate the need for high-frequency operation up to 200 kHz to minimize external filter component size. Consider the Multiwatt® plastic power package for thermal dissipation needs in high-current applications.

Voltage Regulators - DC DC Switching Regulators Part Context

The L296 belongs to STMicroelectronics' legacy monolithic buck converter portfolio. It is designed for high-reliability automotive and industrial applications requiring robust power regulation. The device integrates essential protection features into a single chip, reducing system complexity compared to discrete solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public documentation indicates the L296 is obsolete. Engineers should consult STMicroelectronics for current replacement recommendations within their modern buck converter lineup. Verify compatibility with existing board layouts and thermal constraints when transitioning to new components.