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UCC3976PWTI/UNITRODEN/a105avaiMulti-Topology Piezoelectric Transformer Controller


UCC3976PW ,Multi-Topology Piezoelectric Transformer Controller       SLUS499A – NOVEMBER 2001 – REVISED JANUARY 2002desc ..
UCC3977PW ,Multi-Topology Piezoelectric Transformer Controllerelectrical characteristics V = 3 V to 13.5 V, T = 0°C to 70°C for UCC3975/UCC3976/UCC3977,DD AT = ..
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UPB571C ,500 MHz DUAL-MODULUS PRESCAPERJ51}! f 7 799' NEC® 500 MHz DUAL-MODULUS PRESCALER UPB571C DESCRIPTION The UPBS71C is ..
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UPB582A ,DIVIDE-BY-4 PRESCALERELECTRICAL CHARACTERISTICS (VCC = 5.0 ±0.5 V, ZS = ZL = 50 Ω)PART NUMBER UPB582A UPB582B UPB582CPAC ..
UPB582B ,DIVIDE-BY-4 PRESCALERFEATURES TEST CIRCUITSUPB582A• HIGH FREQUENCY OPERATION TO 2.8 GHzVCC• WIDE BAND OPERATION• SINGLE ..
UPB582C ,DIVIDE-BY-4 PRESCALERelectrical characteristics of thisdevice.TYPICAL PERFORMANCE CURVES(VCC = 5 V, TA = 25°C )UPB582A U ..


UCC3976PW
Multi-Topology Piezoelectric Transformer Controller
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SLUS499A – NOVEMBER 2001 – REVISED JANUARY 2002
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FEATURES
3-V to 13.5-V Operation Supports Flyback (UCC3975), Half-Bridge
(UCC3976), and Push-Pull (UCC3977)
Topologies
Programmable Voltage Controlled Oscillator Open Lamp Protection Low Shutdown Current (15-μA Typical) Dual MOSFET Drivers 8-Pin TSSOP package
APPLICATIONS
Notebook Computers Portable Electronics Displays Portable Instruments
DESCRIPTION
Liquid crystal display (LCD) enclosures and cold
cathode fluorescent lamps (CCFLs) used in
notebook computer and portable electronics
displays are becoming increasingly narrow,
generating the need for a low profile CCFL power
supply. Recent advances in single- and
multi-layered piezoelectric ceramic transformers
(PZT) have enabled the development of a new
generation of efficient, size-reduced backlight
converters. The UCC3975/6/7 family of 8-pin PZT
controllers integrate the necessary circuitry for
operating a PZT-based backlight supply using a
flyback, half-bridge, or push-pull topology. The
choice of power topology depends on application
requirements such as input voltage, lamp voltage,
and PZT gain.
RANGEFBRCSR OSCHV CNT
SHUTDOWN OPEN
UDG–01092
Figure 1. UCC3976-Based CCFL Power Supply Using a Resonant Half-Bridge Topology
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