MCP1252

MCP1252/3 Low-Noise, Positive-Regulated Charge Pump Features: Inductorless, Buck/Boost, DC/DC Converter Low Power: 80 µA (Typical) High Output Voltage Accuracy: - ±2.5% (VOUT Fixed) 120 mA Output Current Wide Operating Temperature Range: - Industrial Temperature (I): -40°C to +85°C - Extended Temperature (E): -40°C to +125°C Thermal Shutdown and Short-Circuit Protection Uses Small Ceramic Capacitors Switching Frequency: - MCP1252: 650 kHz - MCP1253: 1 MHz Low-Power Shutdown Mode: 0.1 µA (Typical) Shutdown Input Compatible with 1.8V Logic VIN Range: 2.0V to 5.5V Selectable Output Voltage (3.3V or 5.0V) or Adjustable Output Voltage Space-Saving, 8-Lead MSOP Soft-Start Circuitry to Minimize In-Rush Current AEC-Q100 Qualified Applications: White LED Backlighting Color Display Bias Local 3V-to-5V Conversions Flash Memory Supply Voltage SIM Interface Supply for GSM Phones Smart Card Readers PCMCIA Local 5V Supplies Description: The MCP1252/3 are inductorless, positive-regulated charge pump DC/DC converters. The devices generate a regulated fixed (3.3V or 5.0V) or adjustable output voltage. They are specifically designed for applications requiring low noise and high efficiency and are able to deliver up to 120 mA output current. The devices allow the input voltage to be lower or higher than the output voltage, by automatically switching between buck/ boost operation. The MCP1252 has a switching frequency of 650 kHz, avoiding interference...