The PT1302 i s a c ompact, high e fficiency, and low voltage st ep-up DC/DC co nverter with an Ad aptive Current M ode P WM co ntrol l oop.
It com prises of an error amplifier, a ramp generator, a PWM comparator, a switch pass el ement an d driv er.
Key Features
z z z z z z z Low Qu iescent (Switch-off) Supp ly Current: 25μA High Supp ly Cap ability: Deliver 5V 800mA with lithium cell/ 3.3V 800mA with 2Alkaline Cell Zero Shutdown Mode Supply Current High efficiency: 92% Fixed switching frequency: 500KHz Options for internal or external power switches MSOP-8 and SOT-89-5 packages are available.
Full PDF Text Transcription for PT1302 (Reference)
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PT1302. For precise diagrams, and layout, please refer to the original PDF.
PT1302 High Efficiency Step-up DC/DC Converter GENERAL DESCRIPTION The PT1302 i s a c ompact, high e fficiency, and low voltage st ep-up DC/DC co nverter with an Ad aptiv...
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fficiency, and low voltage st ep-up DC/DC co nverter with an Ad aptive Current M ode P WM co ntrol l oop. It com prises of an error amplifier, a ramp generator, a PWM comparator, a switch pass el ement an d driv er. It provides stab le an d high ef ficient ope ration o ver a wi de ra nge of l oad currents. It o perates in stable wave forms without external co mpensation. It is su itable fo r 1~4 battery cells ap plications to pr ovide up to 800m A o utput current. Th e 500KHz high sw itching rate reduces th e size of e xternal com ponents. B esides, t he 25 μA l ow quiescent c urrent togethe r wit h high ef ficiency maint
PT1302 Datasheet
