ISL9110BIRTAZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL9110BIRTAZ-T is a high-efficiency synchronous buck-boost switching voltage regulator manufactured by Renesas Electronics Corporation. It integrates power switches to support input voltages ranging from 2.7V to 5.5V, delivering up to 1.2A of output current. The device supports fixed 3.3V and 5V outputs or adjustable voltages via an external resistor divider, accommodating ranges as low as 1V and as high as 5.2V. Key operational features include selectable Forced-PWM mode for low-noise performance and external clock synchronization capabilities. It operates within a temperature range of -40°C to +85°C and utilizes a 12-lead TDFN package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous buck-boost topology supporting wide input voltage ranges
• Selectable Forced-PWM mode to minimize output voltage ripple under light loads
• External synchronization capability for noise management in sensitive systems
• Supports fixed and variable output voltage configurations

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable devices requiring stable regulation across varying battery states
• Industrial equipment with fluctuating supply voltages
• Systems utilizing single-cell lithium-ion or lithium-polymer batteries
• IoT modules demanding high efficiency and compact form factors

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'IRT' corresponds to the industrial temperature grade (-40°C to +85°C) and tape-and-reel packaging configuration. Confirm RoHS compliance status and moisture sensitivity level (MSL) ratings prior to assembly planning. Ensure the ordering part number matches the exact pinout and thermal pad requirements specified in the official datasheet to prevent compatibility issues during PCB layout and sourcing.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltage may drop below or rise above the desired output voltage, necessitating buck-boost functionality rather than standard buck or boost converters. Choose the Fixed Output variants if standard rails like 3.3V or 5V are required to simplify design. Consider the Forced-PWM feature if audible noise or strict ripple specifications are critical for the application environment compared to pulse-skipping modes.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the ISL9110 family of power management ICs designed for space-constrained applications. It complements other Renesas PMIC solutions by providing efficient conversion for single-cell battery systems. The device addresses the need for robust voltage regulation in environments where input sources are unstable or subject to significant discharge curves.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct cross-reference availability from Renesas or Intersil product lines. Verify that any substitute maintains the same 12-lead TDFN footprint and thermal characteristics. Ensure replacement parts support identical input/output voltage ranges and current capabilities without requiring schematic modifications.