The CP2128 is an inductor-less charge pump DC/DC converters. It produces a fixed 5V output voltage from a VIN (range from 2.7V to 4.5V). The device has been designed for low noise and high efficiency application, the maximum output current is 100mA. The free running 2MHz charge pump keeps the chip operation from interfering with hypersensitive IF frequency channel. Low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) makes the CP2128 ideally suited for small, battery-powered applications.High switching frequency enables the use of small ceramic, and reduces both output and input ripple. The CP2128 has thermal shutdown capability and can survive a continuous short circuit from VOUT to GND. Built-in soft-start circuitry prevents excessive inrush current during start-up. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to less than 1¦ÌA.The CP2128 is available in a 6-pin SOT23 package.
FEATURES
• Inductorless charge pump DC/DC Converter
• Regulated 5V ¡À4% Output
• Maximum Output Current: 100mA
• Operating Temperature Range: -40¡ãC To +85¡ãC
• Over Temperature/ Short-Circuit Protection
• 2MHz Free Running Switching Frequency
• Soft-Start Reduces Inrush Current
• VIN Range: 2.7V-4.5V
• 6-Pin SOT23 Packages
APPLICATIONS
• White LED Backlighting
• Local 3V to 5V Conversion
• Smart Card Readers
• PCMCIA Local 5V Supplies
