IR3897MTRPBF

Voltage Regulators - DC DC Switching Regulators Overview

The IR3897MTRPBF is a single-phase synchronous buck regulator from Infineon’s SupIRBuck family. It integrates power MOSFETs and control circuitry for high-efficiency DC-DC conversion. The device supports an input voltage range of 1.0 V to 21 V, with an output voltage adjustable from 0.5 V to 0.86 times the input voltage. It operates at a fixed switching frequency of 1.5 MHz and delivers up to 4 A of output current. The component functions within an operating temperature range of -40 °C to +125 °C and is housed in a compact PQFN 4x5 mm package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous power switches and controller for space-constrained designs
• Supports wide input voltage range suitable for various bus voltages
• Fixed high-frequency operation reduces external passive component size

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for industrial equipment
• Power supply stages for communication infrastructure
• Embedded systems requiring efficient DC-DC conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the obsolete status and end-of-life notifications directly with Infineon Technologies or authorized distributors before procurement planning. Confirm availability of alternative packages or replacement components due to manufacturing discontinuation. Ensure compliance with RoHS directives and check for moisture sensitivity level requirements during storage and handling procedures.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a compact solution with integrated power stages. The fixed 1.5 MHz frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider the 4 A current limit and input voltage compatibility when designing the power stage. Verify thermal performance requirements given the small PQFN footprint and high power density.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to Infineon’s SupIRBuck series, which combines digital control features with integrated power devices. The IR3897MTRPBF represents a simplified version focusing on analog control for cost-sensitive applications. It shares design principles with other members of the OptiMOS IPOL family but lacks advanced digital interfaces like PMBus found in higher-end variants.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

• IR3897M

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum output voltage relative to the input?

The maximum output voltage is limited to 0.86 times the input voltage.

Does the IR3897MTRPBF support digital communication protocols?

No, this specific model uses analog control and does not include digital interfaces such as PMBus or I2C.