ISL6527IB-T

DC DC Switching Controllers Overview

The ISL6527IB-T is a single synchronous buck pulse-width modulation (PWM) controller designed for DC/DC step-down converters. It implements a complete control and protection scheme, operating from a 3.3V to 5V input supply. The device features a maximum switching frequency of 645 kHz and utilizes voltage-mode PWM control with a high-bandwidth error amplifier for fast transient response. It supports full 0% to 100% duty cycle operation and includes lossless, programmable overcurrent protection. The component is housed in a 14-lead plastic SOIC package.

DC DC Switching Controllers Feature Summary

• Implements a complete control and protection scheme for synchronous buck topologies
• Integrates upper MOSFET DS(ON) monitoring to inhibit PWM operation appropriately
• Features a high-bandwidth error amplifier for fast transient response
• Provides lossless, programmable overcurrent protection

DC DC Switching Controllers Applications

• Single output DC/DC step-down converter designs
• Systems requiring simple single-loop voltage-mode control
• Applications demanding high efficiency through synchronous rectification

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration as distinct from tube variants. Confirm RoHS compliance status for the specific manufacturing batch, as historical data shows variations between compliant and non-compliant versions of the base ISL6527 family. Ensure the supplier provides valid traceability documentation for the Intersil or Renesas origin.

DC DC Switching Controllers Selection Notes

Select this component when designing a single-phase synchronous buck converter requiring integrated overcurrent protection and high dynamic performance. The voltage-mode control architecture simplifies compensation network design compared to current-mode alternatives. Verify that the external N-channel MOSFETs are compatible with the driver capabilities and that the input voltage range aligns with the 3.3V to 5V specification.

DC DC Switching Controllers Part Context

The ISL6527 series belongs to Intersil's portfolio of power management ICs focused on efficient DC/DC conversion. This specific part integrates the control logic for synchronous rectification, eliminating the need for external Schottky diodes to improve efficiency. It is part of a family that includes variants like the ISL6527A and ISL6527AIR, differing primarily in packaging and temperature ranges.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitutes include ISL6527IB and ISL6527AIR. Note that ISL6527IB may be discontinued; verify active status before selection. The ISL6527AIB is a related variant with similar electrical characteristics but potentially different packaging or qualification standards.