ISL9012IRJBZ

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

The ISL9012IRJBZ is a dual low-dropout linear regulator (LDO) manufactured by Renesas Electronics Corporation, formerly Intersil. It features two independent LDO channels with fixed output voltages of 3.3V on Channel 1 and 2.8V on Channel 2. The device provides continuous output currents of 150mA for VO1 and 300mA for VO2. It operates within an input voltage range of 2.3V to 6.5V and maintains a typical quiescent current of 45µA when both LDOs are active. The component is housed in 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 control.
• Includes a Power-On-Reset (POR) function for the VO2 output with externally programmable delay via a timing capacitor.
• Features extremely low quiescent current consumption and soft-start capability to limit input current surge during enable.
• Provides comprehensive protection mechanisms including current limit, thermal shutdown, and undervoltage lockout.

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 specific ordering suffix matches the required output voltage configuration, as the ISL9012 series offers multiple fixed voltage combinations. Confirm the package type corresponds to the 10-lead 3x3mm DFN footprint. Ensure compatibility with the system's input voltage range and load requirements before finalizing procurement specifications.

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

Select this component for applications requiring dual independent power rails from a single source. Consider the 150mA and 300mA current capabilities for VO1 and VO2 respectively. Evaluate the need for the integrated POR feature if system sequencing requires a reset signal upon power-up. Verify that the operating temperature range meets the environmental constraints of the target application.

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

The ISL9012 belongs to a family of dual LDO regulators designed for portable electronics. It is pin-compatible with the Micrel MIC2212. The device utilizes a 10-lead 3x3mm DFN package to minimize board space. It is RoHS compliant and suitable for lead-free soldering processes.

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

Public confirmed substitute part numbers: MIC2214-JGYML-TR Microchip Technology

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

How is the Power-On-Reset (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 recommended output capacitance range for stability?

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