Motorola MC34270
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. Both devices have three additional features. The first is an ELD Output that can be used to drive a backlight or a liquid crystal display.FEATURES
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● 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 32 SW1 31 Sync 30 RT 29 Gnd 28 VA 27 Vref 26 EN1 V1 15 25 EN2 DS2 24 Ref2 23 FB2 22 Comp2 21 SS2 20 S2 19 D2 18 Mode VDD ELD V4 V3 V2 V0 16 VB 17 Rev 1 FB SUFFIX PLASTIC PACKAGE CASE 873 PIN CONNECTIONS MOSFET is a trademark of Motorola, Inc. 1 DS1 ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ Rating Symbol VDD Value 16 Unit Vdc Input Voltage Power Dissipation and T...