ISL80019AFRZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL80019AFRZ-T7A is a synchronous buck converter from Renesas, delivering up to 1.5A output current with an input voltage range of 2.7V to 5.5V and adjustable output from 600mV to 5.5V. Operating at a fixed 2MHz switching frequency, it features low quiescent current and integrates PMOS high-side switches to eliminate bootstrap capacitors. The device supports both PWM and PFM modes for optimized efficiency across load conditions, housed in an 8-pin TDFN-EP package rated for -40°C to +125°C operation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates low RDS(ON) MOSFETs with PMOS high-side switch architecture to maximize efficiency and reduce external component count by eliminating the need for a bootstrap capacitor.
• Features selectable Pulse Width Modulation (PWM) or Pulse Frequency Modulation (PFM) operation modes to optimize performance for either noise reduction or light-load efficiency.
• Utilizes peak current mode control architecture to ensure superior transient response and stability while allowing for very low duty cycle operation.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring compact power solutions
• Battery-powered devices needing extended runtime through high efficiency
• Embedded systems utilizing small inductors due to high switching frequency

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix against official documentation, as 'T' typically indicates tape-and-reel packaging while 'TRZ' may denote specific reel configurations. Confirm RoHS compliance status directly with the manufacturer datasheet. Note that availability may be limited; check for active production status versus obsolescence notices on the Renesas website before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact footprint is critical, given its 2mm x 2mm TDFN package. It is suitable for applications requiring a fixed 2MHz frequency to minimize passive component size. Ensure the design accommodates the 2.7V minimum input voltage and verify thermal management requirements for the exposed pad in high-current scenarios.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL80019 series of highly efficient monolithic synchronous step-down DC/DC converters. It shares architectural similarities with the ISL8002 and ISL80031 families but is specifically configured for 1.5A continuous output current. The series is designed for space-constrained applications requiring high power density and excellent line/load regulation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult the official Renesas cross-reference guide for verified substitutes. Potential alternatives within the same family include the ISL80019AIRZ-T7A, which shares identical electrical characteristics but may differ in packaging or reel specifications. Always validate pinout compatibility and thermal performance before substitution.

Voltage Regulators - DC DC Switching Regulators FAQ

Does the ISL80019AFRZ-T7A require an external bootstrap capacitor?

No, the device utilizes a PMOS high-side switch, which eliminates the need for an external bootstrap capacitor, thereby reducing the total external component count.

What compensation options are available for the ISL80019AFRZ-T7A?

The device provides both internal and external compensation options, allowing designers to choose between simplified designs using internal compensation or customized loop stability using external components.