MCP1256/7/8/9
Regulated 3.3V, Low-Ripple Charge Pump with LowOperating Current SLEEP Mode or BYPASS Mode
Features Description Inductorless 1.5x, 2x Boost DC/DC Converter Output Voltage: 3.3V High Output Voltage Accuracy:
-В±3.0% (VOUT Fixed) Output Current Up To 100 mA 20 mVPP Output Voltage Ripple Thermal Shutdown and Short Circuit Protection Uses Small Ceramic Capacitors Switching Frequency: 650 kHz Low-Power SLEEP Mode: MCP1256/7 BYPASS Mode: MCP1258/9 Low-Power Shutdown Mode: 0.1 ВµA (Typical) Shutdown Input Compatible with 1.8V Logic VIN Range: 1.8V to 3.6V Soft-Start Circuitry to Minimize Inrush Current Temperature Range: -40В°C to +125В°C Packaging:
-10-Pin, 3 mm x 3 mm DFN
-10-Pin, MSOP The MCP1256, MCP1257, MCP1258 and MCP1259
are inductorless, positive regulated charge pump
DC/DC converters. The devices generate a regulated
3.3V output voltage from a 1.8V to 3.6V input. The
devices are specifically designed for applications
operating from 2-cell alkaline, Ni-Cd, or Ni-MH
batteries or by one primary lithium MnO2 (or similar)
coin cell battery. Applications Pagers
Portable Measurement Instruments
Home Automation Products
PICВ® MCU Bias Typical Application
MCP1256 INPUT
1.8V to 3.6V
CIN
10 ВµF 7 V
IN VOUT 10 SHDN
1
PGOOD …