ISL80103IRAJZ-TK

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

The ISL80103IRAJZ-TK is a high-performance, low-voltage, single-output linear regulator (LDO) from Renesas Electronics Corporation. It is specified for a continuous output current of 3A and operates with an input voltage range of 2.2V to 6V. The adjustable version provides an output voltage range of 0.8V to 5.5V. Key electrical parameters include a typical dropout voltage of 120mV at full load and a maximum of 244mV. Power supply rejection ratio (PSRR) is rated at 62dB at 120Hz and 55dB at 1kHz. The device features a static current of 7.5mA and supports operation within a temperature range of -40°C to +125°C.

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

• Utilizes submicron BiCMOS process technology to deliver superior analog performance and efficiency compared to bipolar LDOs.
• Incorporates an enable function that allows the device to enter a low quiescent current shutdown mode.
• Features an external soft-start pin capable of controlling inrush current to prevent exceeding current limits.
• Provides comprehensive protection including thermal shutdown (TSD), overcurrent protection (OCP), and electrostatic discharge protection.

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

• Servers
• Telecommunications and networking equipment
• Medical devices
• Instrumentation systems
• Routers and switches

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

Verify the specific suffix 'TK' against the manufacturer's official documentation to confirm tape-and-reel packaging specifications and quantity per reel. Ensure the ordering part number matches the required adjustable output variant. Confirm RoHS compliance status and moisture sensitivity level (MSL) requirements for your assembly process before finalizing procurement orders.

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

Select this component when a high-current 3A solution is required within a low input voltage window of up to 6V. The adjustable output capability allows flexibility for various core voltages between 0.8V and 5.5V. Consider the DFN-10 package for space-constrained designs requiring efficient thermal dissipation. Evaluate the trade-off between the moderate AC regulation bandwidth and the fast transient response characteristics inherent to this family.

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

This device belongs to the ISL80103 series of high-performance linear regulators designed for demanding applications. It shares architectural similarities with the ISL80102 (2A) and ISL80101 (1A) variants, offering scalable current capabilities within the same footprint and feature set. The series leverages advanced CMOS processes to minimize static current consumption relative to load, enhancing overall system efficiency.

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

Direct functional substitutes within the same family include the ISL80102 series for lower current requirements or other ISL80103 variants with fixed output voltages if adjustment is not needed. Verify pinout compatibility and thermal performance when cross-referencing with older Intersil or newer Renesas LDO portfolios.