1 Features
1• Easy-to-Use Control Methodology
• 0.8 V to V IN Adjustable Output Range
• High Efficiency (90% Typical)
• ±0.9% (±1.5% Over Temperature) Feedback
Voltage
• 100% Duty Cycle Capable
• Maximum Operating Frequency up to 2 MHz
• Internal Soft-Start
• Enable Pin

2 Applications
• TFT Monitor
• Auto PC
• Vehicle Security
• Navigation Systems
• Notebook Standby Supply
• Battery Powered Portable Applications
• Distributed Power Systems

3 Description
The LM3475 is a hysteretic P-FET buck controller
designed to support a wide range of high efficiency
applications in a very small SOT-23-5 package. The
hysteretic control scheme has several advantages,
including simple system design with no external
compensation, stable operation with a wide range of
components, and extremely fast transient response. Hysteretic control also provides high efficiency
operation, even at light loads. The PFET architecture
allows for low component count as well as 100% duty
cycle and ultra-low dropout operation.