ISL85003FRZ-TK

Voltage Regulators - DC DC Switching Regulators Overview

The ISL85003FRZ-TK is a synchronous buck regulator from the Renesas ISL85003 series, packaged in a 12-lead DFN (4x3 mm) with an exposed pad. It operates within an input voltage range of 4.5 V to 18 V and delivers up to 3 A of output current. The device features an adjustable output voltage starting from 0.8 V and supports a fixed switching frequency of 500 kHz, which can be externally synchronized up to 2 MHz. It includes integrated protection mechanisms such as overcurrent, overvoltage, and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology for high efficiency
• External synchronization capability up to 2 MHz
• Integrated protection against overcurrent and thermal overload

Voltage Regulators - DC DC Switching Regulators Applications

• Network and communication equipment
• Industrial process control systems
• Embedded computing platforms

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TK' indicates tape and reel packaging when ordering. Confirm the manufacturer is Renesas Electronics Corporation, formerly Intersil. Ensure the package type matches the 12-lead DFN specification. Check RoHS compliance status if required by your manufacturing standards. Validate that the component meets the specified operating temperature range.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part for applications requiring a compact solution with up to 3 A load capacity. It is suitable where external synchronization is needed to avoid noise interference. Consider the 12-lead DFN package for space-constrained designs. Verify that the input voltage stays within the 4.5 V to 18 V range. Ensure the required output voltage is adjustable down to 0.8 V.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the ISL85003 family of high-efficiency synchronous buck regulators. The family is designed for point-of-load applications in portable and industrial electronics. The FRZ suffix typically denotes a lead-free RoHS-compliant version in a DFN package. The TK suffix specifies the reel packaging format for automated assembly.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The ISL85003AFRZ-TK is a confirmed substitute within the same product family. Both parts share identical electrical specifications and pinouts. Verify that the replacement maintains the same 12-lead DFN package configuration.