ISL9011IRJMZ-T

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

The ISL9011IRJMZ-T is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation, housed in a 10-lead 3mm x 3mm Dual Flat No-Lead (DFN) package. It provides two independent positive fixed output voltages: Channel 1 delivers 2.8V at up to 150mA, and Channel 2 delivers 3.0V at up to 300mA. The device operates with an input voltage range of 2.3V to 6.5V and features a typical quiescent current of 45µA when both channels are active. It includes separate enable pins for each LDO, achieving shutdown currents below 0.1µA.

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

• Integrates two high-performance LDOs with distinct current capabilities of 150mA and 300mA.
• Features extremely low quiescent current consumption and high power supply rejection ratio.
• Includes separate enable pins for individual channel control and soft-start functionality.
• Provides comprehensive protection against overcurrent conditions and thermal overload.

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 '-T' indicates tape and reel packaging configuration as per manufacturer technical briefs. Confirm that the part marking 'DALA' corresponds to the requested 2.8V and 3.0V output combination. Ensure compatibility with RoHS compliance standards and lead-free reflow profiles before procurement.

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

Select this component for applications requiring precise dual voltage rails from a single input source. The device is suitable where low noise and high PSRR are critical, particularly when utilizing the reference bypass pin. Verify that the required output capacitance falls within the stable range of 1µF to 10µF with ESR limits not exceeding 200mΩ.

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

This component belongs to the ISL9011 series of dual LDO regulators designed for portable electronics. It is pin-compatible with the Micrel MIC2211, facilitating direct replacements in existing designs. The series offers various fixed voltage combinations within a compact DFN package optimized for space-constrained handheld devices.

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

ISL9011IRJNZ-T

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

How does the device manage startup sequences when both enable pins are asserted?

If both EN1 and EN2 are brought high simultaneously, the VO1 output has priority and powers up first. If one pin is asserted before the other stabilizes, the device delays the second turn-on until the first output reaches its target level.

What is the function of the CBYP pin?

The CBYP pin allows connection of an external capacitor to tune noise filter performance. Connecting a capacitor between this pin and ground adjusts the low-pass filter characteristics for improved noise and PSRR.