ISL9011IRNNZ-T

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

The ISL9011IRNNZ-T is a dual low-dropout regulator (LDO) in a 10-lead 3x3mm DFN package. It provides fixed outputs of 3.3V on Channel 1 and 3.3V on Channel 2. Channel 1 supports up to 150mA, while Channel 2 supports up to 300mA. The input voltage range is 2.3V to 6.5V. Quiescent current is typically 45µA with both LDOs active. Dropout voltage is typically 120mV at 150mA for VO1 and 200mV at 300mA for VO2. Output noise is typically 30µV RMS from 10Hz to 100kHz. PSRR is 70dB at 1kHz. Voltage accuracy is ±1.8%. Operating temperature is -40°C to +85°C.

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

• Integrates two independent LDOs with separate enable pins for individual power control.
• Features extremely low quiescent current and high power supply rejection ratio.
• Includes soft-start functionality to limit input current surge during startup.
• Provides integrated overcurrent and thermal shutdown protection.

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' confirms tape and reel packaging as per manufacturer technical briefs. Confirm RoHS compliance and lead-free termination specifications. Check datasheet revisions for any updates to electrical characteristics or pin configurations before finalizing procurement.

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

Select this component for applications requiring dual regulated rails from a single input source. Ensure output capacitors are within the 1µF to 10µF range with ESR below 200mΩ for stability. Consider the 300mA capability of Channel 2 for higher load requirements compared to Channel 1.

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

This device belongs to the ISL9011 series of dual LDOs manufactured by Renesas Electronics Corporation (formerly Intersil). It is designed for portable electronics where low noise and low standby current are critical. The package is pin-compatible with certain competitor devices like the Micrel MIC2211.

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

ISL9011AIRNNZ

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

How does the CBYP pin affect performance?

Connecting a capacitor between the CBYP pin and GND allows tuning of the noise filter. A 0.01µF capacitor implements a 100Hz lowpass filter, while larger values reduce noise further.

What happens if the die temperature exceeds limits?

Thermal shutdown activates when the die reaches approximately +145°C, disabling one or both LDOs until the temperature falls below +110°C.