General Description

The AAT3183 is a high efficiency step-down charge pump converter providing up to 300mA of output current. The 1/2x (gain) charge pump converter topology provides enhanced efficiency over conventional LDO regulators and requires only three low cost ceramic capacitors. No inductor is required; saving space and cost when compared to inductive switching regulators.

Features

• VIN Range: 2.7V to 5.5V

• VOUT: 1.5V and 1.34V

• 300mA Maximum Output Current

• Ultra-Small Solution for Portable Applications

▪ Small Footprint

▪ Only Three External Ceramic Capacitors Required

▪ No Inductor

• High Efficiency over the Output Current Range

• Excellent Transient Performance

• 35µA Typical Quiescent Current

• <1.0µA Shutdown Current

• Up to 2MHz Switching Frequency

• Integrated Soft-Start

• Short-Circuit and Thermal Protection

• 2.0x2.1mm SC70JW-8 Package

• -40°C to 85°C Temperature Range

Applications

• Camcorders

• Digital Still Cameras

• DSP Core Supplies

• PDAs, Handheld Devices, Notebook PCs

• Smart Phones