The MCP1253-33X50 is an inductorless, positive regulating, low noise charge pump DC-to-DC converter. It has selectable outputs of either 3.3V or 5.0V and can deliver 120mA of load current at the selected regulated output voltage. Since the device incorporates an automatic buck/boost feature, it will maintain the regulated output voltage whether the input voltage is above or below the output voltage. The MCP1252 operates at a switching frequency of 1.0MHZ and features a power-good pin that monitors out-of-regulation conditions.
Parameter Name Value
Typical Active Output Current (mA) 120
Output Voltage (V) Selectable 3.3 or 5.0V
Typical Quiescent Current (µA) 80
Input Voltage Range (V) 2.1 to 5.5
Operating Temp. Range (°C) -45 to 85
Device Description Regulated
Features
Shutdown Control to minimize current drain during stand-by conditions Logic level shutdown mode 2.0V to 5.5V input voltage range -40 C to +85 C operation Power-good output indicator with hysteresis Thermal shutdown protection with hysteresis Short circuit protection 21./2.7 to 5.5, 2.0 to 5.5 Selectable 3.3V or 5.0V or Adjustable 1.5V to 5.5V
