MC34271 is a low power dual switching voltage regulator, specifically designed for handheld and laptop applications, to provide several regulated output voltages using a minimum of external parts.
The MC34271 is a low power dual switching voltage regulator specifically designed for handheld and laptop applications. It provides several regulated output voltages using a minimum of external parts, featuring two uncommitted switching regulators with very low standby bias current.
Key features include an ELD Output capable of driving backlights or liquid crystal displays, four additional output bias voltages proportional to Vpp for mixed logic circuitry and N-Channel MOSFET load control, and a Logic Enable input for microprocessor control. The device is suitable for battery-powered equipment where extending useful battery life is desirable.
| Standby Bias Current | 5.0 uA |
|---|---|
| Operating Current | 7.0 mA |
| Input Voltage (Vpp) | 16 Vdc |
| Maximum Power Dissipation | 1.43 W |
| Switch Current (ISL & ISB) | 500 mA |
| Operating Junction Temperature | 125 °C |
| Reference Voltage (Typical) | 1.250 V |
| Output Resistance (Auxiliary) | 20 to 60 Ohms |
The device features a very low standby bias current of 5.0 uA.
The maximum operating junction temperature is 125 °C.
Yes, the Logic Enable input allows a logic level signal to turn both switching regulators on or off.