Microchip Technology MCP1257
The MCP1257 and MCP1259 feature a lowbattery indication that issues a warning if the input voltage drops below a preset voltage threshold. The devices incorporate thermal and short-circuit protection.| Part No. | MCP1257 |
|---|---|
| Datasheet | MCP1257 Download |
| Manufacturer |  Microchip Technology |
| Description | Low-Ripple Charge Pump |
| Buy | Stock & Price |
FEATURES
● Inductorless 1.5x, 2x Boost DC/DC Converter● Output Voltage: 3.3V
● High Output Voltage Accuracy: - ±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 µA (Typical)
● Shutdown Input Compatible with 1.8V Logic
● VIN Range: 1.8V to 3.6V
● Soft-Start Circuitry to Minimize Inrush Current
● Temperature Range: -40°C to +125°C
● Packaging: - 10-Pin, 3 mm x 3 mm DFN - 10-Pin, MSOP
APPLICATIONS
● Pagers● Portable Measurement Instruments
● Home Automation Products
● PIC® MCU Bias Typical Application INPUT 1.8V to 3.6V CIN 10 µF C1 1 µF ON / OFF MCP1256 7 VIN VOUT 5 10 SHDN PGOOD 1 4 C1+ 8 C1- C2+ 6 C2- 3 2 SLEEP GND 9 OUTPUT 3.3V R1 COUT 10 µF C2 1 µF Power-Good Indication Typical Application with Power-Good Indication
DESCRIPTION
The MCP1256, MCP1257, MCP1258 and MCP1259 are inductorless, positive regulated charge pump DC/DC converters.
