ISL9012IRNJZ-T

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

The ISL9012IRNJZ-T is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation. It features two independent LDO channels: Channel 1 (VO1) provides a fixed 3.3V output with a maximum current of 150mA, while Channel 2 (VO2) provides a fixed 2.8V output with a maximum current of 300mA. The device operates within an input voltage range of 2.3V to 6.5V and maintains a typical quiescent current of 45µA when both channels are active. It utilizes a 10-lead 3x3mm DFN package.

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

• Integrates two high-performance LDOs with separate enable pins for individual channel control.
• Includes a Power-On-Reset (POR) function for the VO2 output with externally programmable delay via the CPOR pin.
• Features soft-start circuitry to limit input current surge during enable and protects against overcurrent and overheating conditions.

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 that the ordering suffix '-T' corresponds to tape and reel packaging as specified in the datasheet. Confirm the specific output voltage combination matches the required design parameters, as this part number is designated for 3.3V on VO1 and 2.8V on VO2. Ensure compatibility with the 10-lead 3x3mm DFN footprint during PCB layout.

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

Select this component for applications requiring dual regulated outputs from a single supply rail with minimal standby power consumption. The device is suitable for noise-sensitive circuits due to its low output noise characteristics and reference bypass capability. Verify that the load requirements do not exceed the 150mA limit for Channel 1 or the 300mA limit for Channel 2.

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

The ISL9012 belongs to the Intersil/Renesas family of dual LDO regulators designed for portable electronics. It is pin-compatible with the Micrel MIC2212. The device is housed in a lead-free, RoHS-compliant 10-lead 3x3mm DFN package, optimized for space-constrained designs in mobile and handheld computing markets.

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

The datasheet lists ISL9000AIRNJZ as the recommended replacement for the non-tape-and-reel version of this specific voltage configuration.

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

How is the POR delay time determined?

The POR delay for the VO2 output is externally programmed by connecting a timing capacitor to the CPOR pin. For a 0.01µF capacitor, the entry delay is typically 200ms.

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.