The MC34270 and MC34271 are low power dual switching voltage regulators, specifically designed for handheld and laptop applications, to provide several regulated output voltages using a minimum of external parts. Two uncommitted switching regulators feature a very low standby bias current of 5.0 µA, and an operating current of 7.0 mA capable of supplying output currents in excess of 200 mA.

MC34270 and MC34271 Features:
• Low Standby Bias Current of 5.0 µA
• Uncommitted Switching Regulators Allow Both Positive and Negative Supply Voltages
• Logic Enable Allows Microprocessor Control of All Outputs
• Synchronizable to External Clock
• Mode Commandable for ELD and LCD Interface
• Frequency Synchronizable
• Auxiliary Output Bias Voltages Enable Load Control via N–Channel FETs