ISL9005IRJZ-T

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The ISL9005IRJZ-T is a fixed-output Low Dropout linear regulator manufactured by Renesas Electronics Corporation, providing a stable 2.8V output with a maximum continuous current of 300mA. It operates within an input voltage range of 2.3V to 6.5V and features a typical quiescent current of 50µA in active mode, dropping to 0.1µA in shutdown. The device includes integrated soft-start, overcurrent protection, and thermal shutdown. It is housed in an 8-lead 2mm x 3mm Dual Flat No-Lead (DFN) package and supports an operating temperature range from -40°C to +85°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides high power supply rejection ratio (PSRR) of 75dB at 1kHz for effective noise filtering.
• Integrates smart thermal shutdown and current limit protection to ensure operational safety.
• Features a soft-start mechanism that limits input current surge during the enable sequence.
• Maintains stability when used with ceramic output capacitors ranging from 1µF to 10µF.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Portable instruments
• MP3 players
• Handheld medical devices

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance and Pb-free status prior to integration. Ensure proper handling procedures are followed due to moisture sensitivity classification. Review datasheet specifications thoroughly to validate suitability for specific environmental conditions and load requirements before finalizing procurement decisions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component for applications requiring low standby current and high PSRR in portable wireless equipment. Verify that the required output voltage matches the fixed 2.8V specification. Ensure the design accommodates the specified input voltage range and utilizes appropriate ceramic output capacitors between 1µF and 10µF to maintain stability under varying load conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the ISL9005 series of high-performance LDOs designed for portable electronics. It is characterized by low dropout voltage and excellent transient response. The series offers various fixed output voltages and is packaged in a compact DFN format suitable for space-constrained designs. It serves as a legacy product within the portfolio, often superseded by newer iterations like the ISL9005A.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

The official recommended replacement part number is ISL9005A. Verify pinout compatibility and electrical parameter alignment before substitution.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the typical quiescent current consumption?

The typical quiescent current is 50µA when the LDO is active.

How does the device handle overheating?

It features smart thermal shutdown that disables the LDO if the die temperature reaches approximately 140°C, re-enabling it once cooled below 110°C.