UCC3973PWTR ,BiCMOS Cold Cathode Fluorescent Lamp Driver ControllerMAXIMUM RATINGSVBAT..... +27VTSSOP-8 (TOP VIEW)VDD Maximum Forced Current .. 30mAPW PackageMaximum ..
UCC3973PWTRG4 ,BiCMOS Cold Cathode Fluorescent Lamp Driver Controller 8-TSSOP 0 to 70ELECTRICAL CHARACTERISTICS:Unless otherwise specified these specifications hold for T =0°C to +70°C ..
UCC3974PW ,Dual Cold Cathode Fluorescent Lamp Controllerelectrical characteristics over recommended operating virtual junction temperature range,T = 0C to ..
UCC3975PW , MULTI 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 = ..
UPB571C ,500 MHz DUAL-MODULUS PRESCAPERJ51}! f 7 799'
NEC®
500 MHz DUAL-MODULUS
PRESCALER UPB571C
DESCRIPTION
The UPBS71C is ..
UPB581B , DIVIDE- BY- 2 PRESCALER
UPB581C ,3 GHz INPUT DIVIDE BY 2 PRESCALER IC FOR DBS TUNERSDATA SHEETBIPOLAR DIGITAL INTEGRATED CIRCUITμ μPB1508GVμ μ3 GHz INPUT DIVIDE BY 2 PRESCAL ..
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 ..
UCC3973PW-UCC3973PWTR-UCC3973PWTRG4
BiCMOS Cold Cathode Fluorescent Lamp Driver Controller
UCC1972/3
UCC2972/3
UCC3972/3
DESCRIPTIONDesign goals fora Cold Cathode Fluorescent Lamp (CCFL) converter useda notebook computeror portable application include small size, high effi-
ciency, and low cost. The UCC3972/3 CCFL controllers provide the neces-
sary circuit blocksto implementa highly efficient CCFL backlight power
supplyina small footprint8 pin TSSOP package. The BiCMOS controllers
typically consume less than 1mAof operating current, improving overall
system efficiency when comparedto bipolar controllers requiring 5mAto
10mAof operating current.
External parts countis minimized and system costis reducedby integrating
such featuresasa feedback controlled PWM driver stage, open lamp pro-
tection, startup delay and synchronization circuitry between the buck and
push-pull stages. The UCC3972/3 include an internal shunt regulator, al-
lowing the partto operate with input voltages from 4.5Vupto 25V. The part
supports both analog and externally generated low frequency dimming
modesof operation.
The UCC3973 addsa programmable voltage clampat the BUCK pin. This
feature can be usedto protect the transformer from overvoltage during
startupor when an open lamp occurs. Transformer voltageis controlledby
reducing duty cycle whenan over-voltageis detected.
BiCMOS Cold Cathode Fluorescent Lamp Driver Controller
FEATURES 1mA Typical Supply Current Accurate Lamp Current Control Analogor Low Frequency Dimming
Capability Open Lamp Protection Programmable Startup Delay 4.5Vto 25V Operation PWM Frequency Synchronizedto
External Resonant Tank8 Pin TSSOP and SOIC Packages
Available Internal Voltage Clamp Protects
Transformer from Over-voltage
(UCC3973)
TYPICAL APPLICATION CIRCUIT
