ISL91110IINZ-T7A

Voltage Regulators - DC DC Switching Regulators Overview

The ISL9110IINZ-T7A is a high-efficiency synchronous buck-boost switching regulator manufactured by Renesas Electronics. It operates with an input voltage range of 1.8 V to 5.5 V and provides a fixed 3.3 V output at up to 2 A. The device integrates 4 A internal power switches and utilizes a 2.5 MHz switching frequency. It features a low quiescent current of 35 uA and supports shutdown mode. The component is housed in a WLCSP-25 package and functions within a temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck-boost topology supporting single-cell lithium-ion or multi-cell battery applications
• Integrated high-current 4 A power switches for efficient power conversion
• Low standby current consumption to extend battery life in portable devices

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring stable voltage from varying battery levels
• Battery-powered industrial handheld instruments
• Medical equipment utilizing single-cell or multi-cell battery configurations

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'T7A' indicates tape and reel packaging when ordering. Confirm the 'I' grade corresponds to the industrial temperature range requirements. Ensure compatibility with WLCSP-25 footprint during PCB layout. Check RoHS compliance status via official datasheets before final procurement approval.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when input voltage fluctuates above and below the required output level. The 4 A switch rating allows for headroom against peak load currents. The WLCSP package is suitable for space-constrained designs. Verify that the 2.5 MHz frequency aligns with EMI constraints and inductor size requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL91110 series of high-efficiency buck-boost regulators. It is designed for applications where input voltage varies significantly, such as single-cell Li-ion batteries discharging from 4.2 V to lower levels while maintaining a constant 3.3 V output. It serves as a key PMIC component in portable systems.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult official Renesas documentation for qualified substitutes. Cross-reference pinouts and electrical specifications carefully. Verify thermal performance and package dimensions match existing board layouts before substitution.