ISL9012IRFJZ

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

The ISL9012IRFJZ is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation. It provides two independent regulated outputs: Channel 1 (VO1) delivers up to 150mA, and Channel 2 (VO2) delivers up to 300mA. The device operates with an input voltage range of 2.3V to 6.5V. Quiescent current is typically 45µA when both LDOs are active, dropping below 0.1µA in shutdown mode. Output voltages are fixed at 2.5V for VO1 and 2.0V for VO2. The package is a 10-lead 3x3mm DFN.

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

• Integrates two high-performance LDOs with separate enable pins for individual control.
• Includes a Power-On-Reset (POR) function for the VO2 output with adjustable delay via an external capacitor.
• Features extremely low quiescent current and low dropout voltage for efficient power management.
• Provides comprehensive protection including thermal shutdown, current limit, and soft-start capabilities.

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

• PDAs, Cell Phones and Smart Phones
• Portable Instruments and MP3 Players
• Handheld Devices including Medical Handhelds

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

Verify the specific ordering suffix against the manufacturer's official documentation to confirm exact output voltage combinations and packaging options. Confirm RoHS compliance status and lead-free termination specifications prior to procurement. Ensure compatibility with existing PCB land patterns for the 10-lead DFN package. Check for any recent product change notices or obsolescence announcements from the manufacturer.

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

Select this component for applications requiring dual isolated rails with distinct current capabilities. Verify that the required output voltages match the factory-trimmed options available in the datasheet. Ensure the load capacitance falls within the stable range of 1µF to 10µF. Consider the thermal performance requirements given the small DFN package size and junction temperature limits.

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

The ISL9012 belongs to the ISL9012 series of dual LDO regulators designed for portable electronics. It is pin-compatible with certain Micrel devices. The series offers various fixed output voltage combinations to suit different system architectures. It is part of Renesas' portfolio of power management integrated circuits aimed at mobile and handheld computing markets.

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

ISL9000AIRNJZ

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

How is the POR delay time determined?

The POR delay time for the VO2 output is externally programmed by connecting a timing capacitor to the CPOR pin. A 0.01µF capacitor results in approximately a 200ms delay.

What is the stability requirement for output capacitors?

The device is stable with output capacitance ranging from 1µF to 10µF, provided the equivalent series resistance (ESR) is up to 200mΩ.