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UCC3817ADR-UCC3817AN-UCC3817ANG4 Fast Delivery,Good Price
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Partno Mfg Dc Qty AvailableDescript
UCC3817ADRTIBBN/a40avaiBiCMOS Power Factor Preregualtor
UCC3817ANUCN/a935avaiBiCMOS Power Factor Preregualtor
UCC3817ANG4TEXASN/a1avaiBiCMOS Power Factor Preregualtor 16-PDIP 0 to 70


UCC3817AN ,BiCMOS Power Factor PreregualtorMaximum Ratings.. 513.1 Documentation Support.... 268.2 ESD Ratings........ 513.2 Related Links.. 2 ..
UCC3817ANG4 ,BiCMOS Power Factor Preregualtor 16-PDIP 0 to 70Features 3 DescriptionThe UCC3817A and the UCC3818A family provides1• Controls Boost Preregulator t ..
UCC3817APWRG4 , BiCMOS POWER FACTOR PREREGULATOR
UCC3817D ,BiCMOS Power Factor PreregulatorPin Functions (continued)PINI/O DESCRIPTIONNAME NO.Voltage amplifier inverting input. This is norma ..
UCC3817DTR ,BiCMOS Power Factor PreregulatorMaximum Ratings(1)over operating free-air temperature range (unless otherwise noted)MIN MAX UNITSup ..
UCC3817DW ,BiCMOS Power Factor PreregulatorFeatures... 1 8 Application and Implementation...... 158.1 Application Information........ 152 Appl ..
UPA611TA ,N-CHANNEL MOS FIELD EFFECT TRANSISTOR FOR HIGH SPEED SWITCHINGFEATURES0.95 0.950.8• Can be driven by a 2.5-V power source1.9• Low gate cut-off voltage 1.1 to 1.4 ..
UPA621TT ,N-CHANNEL MOS FIELD EFFECT TRANSISTOR FOR SWITCHINGFEATURES• 2.5 V drive available• Low on-state resistance0.65 0.65SRDS(on)1 = 50 mΩ MAX. (VGS = 4.5 ..
UPA621TT-E1 ,N-channel enhancement type MOS FETFEATURES• 2.5 V drive available• Low on-state resistance0.65 0.65SRDS(on)1 = 50 mΩ MAX. (VGS = 4.5 ..
UPA650TT-E1 ,P-channel enhancement type MOS FETFEATURES 2 3• 1.8 V drive available• Low on-state resistance0.65 0.65SRDS(on)1 = 50 mΩ MAX. (VGS = ..
UPA651TT-E1 ,P-channel enhancement type MOS FETFEATURES 2 3• 1.8 V drive available• Low on-state resistance0.65 0.65SRDS(on)1 = 69 mΩ MAX. (VGS = ..
UPA652TT-E1 ,P-channel enhancement type MOS FETDATA SHEETMOS FIELD EFFECT TRANSISTORµµµµ PA652TTP-CHANNEL MOS FIELD EFFECT TRANSISTORFOR SWITCHIN ..


UCC3817ADR-UCC3817AN-UCC3817ANG4
BiCMOS Power Factor Preregualtor
VREF
DRVOUT
GND
VCC
OVP/EN
VAOUT
1.9 V
PKLMT
7.5 V
REFERENCE
UVLO
16 V/10 V (UCC3817A)
10.5 V/10 V (UCC3818A)
VCC
OSCILLATOR Q
PWM
LATCH PWM
VOLTAGE
ERROR AMP
8.0 VVSENSE
ENABLE
OVP
MULT
CURRENT
AMP
16 V (FOR UCC3817A ONLY)0.33 V
ZERO POWER
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UCC2817A, UCC2818A, UCC3817A, UCC3818A

SLUS577D –NOVEMBER 2011–REVISED AUGUST
UCCx81xA BiCMOS Power Factor Preregulator Features
Controls Boost Preregulatorto Near-Unity Power
Factor Limits Line Distortion World Wide Line Operation Overvoltage Protection Accurate Power Limiting Average Current Mode Control Improved Noise Immunity Improved Feed-Forward Line Regulation Leading Edge Modulation 150-µA Typical Start-Up Current Low-Power BiCMOS Operation 12-Vto 17-V Operation Frequency Rangeof6 kHzto 220 kHz Applications PC Power Consumer Electronics Lighting Industrial Power Supplies IEC6100-3-2 Compliant Supplies Less Than
300W Description the UCC3818A family provides for active power The controller achieves shaping theac input lineto thatof the ac input mode control maintains line current. BiCMOS process, the offers new features such as lower power dissipation,
overvoltage protection,a shunt UVLO detect circuitry, leading-edge modulation techniqueto reduce ripple
currentin the bulk capacitor and an improved, low-
offset (±2 mV) current amplifierto reduce distortionat
light load conditions.
Block Diagram
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