datasheetFeatures
1• Input Voltage Range: 2.5 V to 5.5 V
• Adjustable Output Voltages (VOUT): 0.7 V to 2.5 V
• Fixed Output Voltages: 1.2 V, 1.5 V, 1.6 V, 1.8 V,
1.875 V, 3.3V
• 15-µA Typical Quiescent Current
• 350-mA Maximum Load Capability
• 1-MHz PWM Fixed Switching Frequency (Typical)
• Automatic PFM and PWM Mode Switching
• Low Dropout Operation – 100% Duty Cycle Mode
• Internal Synchronous Rectification for High
Efficiency
• Internal Soft Start
• 0.1-µA Typical Shutdown Current
• Current Overload Protection
• Operates from a Single Li-Ion Cell or Three-Cell
NiMH/NiCd Batteries
• Only Three Tiny Surface-Mount External
Components Required (One Inductor, Two
Ceramic Capacitors)
2 Applications
• Mobile Phones and Handheld Devices
• PDAs
• Palm-Top PCs
• Portable Instruments
• Battery-Powered Devices
