Features
• Fully Integrated Synchronous Buck Regulator + Dual LDO
• High Output Current (For QFN package)
- PWM, 1.2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mA
- LDO1, 1.8V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mA
- LDO2, 1.8V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200mA
• Ultra-Compact DC-DC Converter Design
• Stable with Small Ceramic Output Capacitors
• High Conversion Efficiency
• Low Shutdown Supply Current
• Ultra-Low Dropout Voltage for LDOs
- LDO1, 1.8V. . . . . . . . . . . . . . . . 125mV (typ.) at 300mA
- LDO2, 1.8V. . . . . . . . . . . . . . . . 100mV (typ.) at 200mA
• Ultra-Low Output Voltage Noise
- <30VRMS (typ.) for LDO2 (VCO Supply)
• PG_LDO, PG_PWM and PG_PWM outputs
• Extensive Circuit Protection and Monitoring Features
- Overvoltage protection
- Overcurrent protection
- Shutdown
- Thermal Shutdown
• Integrated RESET output for microprocessor reset
• Proven Reference Design for 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 Available (RoHS Compliant)