GENERAL DESCRIPTION
The AMS4155 is a monolithic step down switch mode converter with a built in internal power Switch Transistor. It achieves 2A continuous output current over a wide input supply range with excellent load and line regulation.
Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycleby-cycle current limiting and thermal shutdown. In shutdown mode the regulator draws 17µA of supply current.

FEATURES
• Stable with low ESR Output Ceramic Capacitors
• Up to 95% Efficiency
• 2A Continuous Output Current
• Wide 4.75V to 20V Operating Input Range
• Fixed 480kHz Frequency
• Thermal Shutdown
• Cycle-by-cycle + hiccup Over Current Protection
• Under Voltage Lockout
• Frequency Synchronization Input
• Operating Temperature: -40°C to 125°C
• Available in an 8-Pin SO Package

APPLICATIONS
• Battery Chargers
• Portable (Notebook) Computers
• Industrial power supply
• Point of regulation for high performance electronics
• Consumer Electronics
• Audio Power Amplifiers
• Distributed Power Systems
• Pre-Regulator for Linear Regulators
• LCD TVs and LCD monitors