RT9248APC

Overview

The RT9248APC is a synchronous buck DC-DC switching controller manufactured by Richtek USA Inc. It features three independent output channels with PWM control and integrated synchronous rectification. The device operates within an input voltage range of 4.5V to 5.5V and supports adjustable switching frequencies between 50kHz and 400kHz. It is housed in a 28-TSSOP package with exposed pad for thermal dissipation.

Feature Summary

• Integrates three synchronous buck converters with internal power switches
• Supports programmable switching frequency from 50kHz to 400kHz
• Includes Power Good indication for system monitoring

Applications

• Multi-rail power distribution systems
• Industrial equipment power supplies
• Communication infrastructure boards

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS3 compliance status and check for specific EOL notifications as the part is marked as obsolete. Ensure packaging details match project requirements before finalizing procurement orders.

Selection Notes

Select this component when designing multi-voltage systems requiring synchronized buck regulation. Evaluate thermal performance due to the TSSOP package constraints. Verify that the required output voltages fall within the controller's operational limits and that the switching frequency aligns with external inductor selection guidelines.

Part Context

This IC belongs to the Richtek RT9248 family of multi-phase power management solutions. It is designed for applications requiring multiple regulated rails from a single input source. The device integrates control logic for efficient power conversion without requiring external MOSFETs.

Replacement Considerations

NCP59302DSADJR4G by onsemi is listed as a substitute option.