The ISL6412 is an ultra low noise triple output LDO regulator with microprocessor reset circuit and is optimized for powering wireless chip sets.

Features

• Small DC/DC Converter Size

- Three LDOs and Reset Circuitry in a Low-Profile 4x4mm QFN Package

• High Output Current

- LDO1, 1.8V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330mA

- LDO2, 2.8V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225mA

- LDO3, 2.8V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125mA

• Ultra-Low Dropout Voltage

- LDO2, 2.8V. . . . . . . . . . . . . . . . 125mV (typ.) at 225mA

- LDO3, 2.8V. . . . . . . . . . . . . . . . 100mV (typ.) at 125mA

• Ultra-Low Output Voltage Noise

- <30μVRMS (typ.) for LDO3 (VCO Supply)

• Stable with Small Ceramic Output Capacitors

• Extensive Protection and Monitoring Features

- Over current protection

- Short circuit protection

- Thermal shutdown

- FAULT indicator

• Logic-Controlled Shutdown Pin

• Integrated Microprocessor Reset Circuit

- Programmable Reset Delay

• Proven Reference Design for a Total WLAN System Solution

• QFN Package

- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat No Leads - Product Outline

- Near Chip-Scale Package Footprint Improves PCB Efficiency and Is Thinner in Profile

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• PRISM® 3 Chipsets – ISL37106P

• WLAN Cards

- PCMCIA, Cardbus32, MiniPCI Cards

- Compact Flash Cards

• Liberty Chipset

• Hand-Held Instruments