描述 Description

The TMI5120/5120A/5120B/5120C/5120E are a series of compact, high-efficiency, synchronous step DC-DC Converters. It provides an easy-to-use power by either single-cell, two-cell, or three-cell alkaline, NiCd, NiMH, and single-cell Li-Ion or Li-Polymerbatteries. The boost converter is based on a PFM mode controller topology using synchronous rectification to obtain maximum efficiency at minimal quiescentcurrents. The output voltage can be set internally to a fixed output voltage or is programmed by an external resistordivider(TMI5120C). For standby applications, the device consumes only20μAfrom batterywhile operatingatnoload, and the device feature low shutdown current of under1μA.

特性 Features

. Upto92%Efficiency ? (2). Upto100mAOutputCurrentfromaSingleAACell ? (2). LowStart-upVoltage:0.85V ? (2). InternalSynchronousRectifier ? (2). OutputVoltage:2.2V/3.0V/3.3V(FixedVersion) ?(2). ProgrammableOutputVoltage(TMI5120C) ? (2). LowDeviceQuiescentCurrent:20μA ? (2). ShutdownCurrent:<1μA ? (2). Available in SOT23 (TMI5120), SOT23-6 (TMI5120A and TMI5120E) and SOT23-5 (TMI5120B) and SC-70-6(TMI5120C)Packages(2)

應(yīng)用 Application

. One,TwoandThreeCellAlkalineandNiMH/NiCd PortableProducts ?
. Single-CellLi-IonPoweredDevices ?
. PersonalMedicalProducts ?
. WirelessHandsets ?
. HandheldInstruments ?
. BluetoothHandsets