VPA1000

Product Datasheet Features Low cost alternative to buck regulator Saves up to ~500mW compared to standard LDO Small PCB footprint 1.2V, 1.5V, or 1.8V fixed output voltages 300mA maximum output current 3.3V to 1.2V with 72% efficiency High frequency (2.4MHz) reduces size of external components Short-circuit current protection Over-temperature protection Soft start TSOT-6 package Applications Notebook computers Handsets Battery powered equipment Typical Application Circuit Low Voltage 0.5x Regulated Step Down Charge Pump VPA1000 Description The VPA1000 is a low voltage 0.5x regulated step-down charge pump. It is designed as a low cost replacement for inductor-based step-down switching regulators (buck), or a high efficiency replacement for linear regulators (LDO). At full load, it can save nearly 500mW of power compared to a standard LDO, making it ideal for low cost battery powered applications. The VPA1000 can also be put in a micro-power shutdown mode with 1µA nominal input current to extend battery life when not in use. The VPA1000 is available in a TSOT-6 package and characterized over the industrial temperature range of -40°C to +85°C. January 21, 2010 Figure 1. VPA1000DYGI-12 Typical Application Circuit 1 VPA1000 Product Datasheet Table of Contents Absolute Maximum Ratings...............................................3 Specification Table............................................................4 Typical Performance Characteristics....................................