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Partno Mfg Dc Qty AvailableDescript
UCC3809D-1 |UCC3809D1UNITRODEN/a1400avai1
UCC3809N-1 |UCC3809N1UNITRODEN/a5avai1
UCC38091TIN/a299avaiEconomy Primary Side Controller
UCC3809-1 |UCC38091TIN/a23avaiEconomy Primary Side Controller
UCC3809DTR-1 |UCC3809DTR1TIN/a1774avai1
UCC3809DTR-1G4 |UCC3809DTR1G4TI/BBN/a8avaiEconomy Primary Side Controller 8-SOIC 0 to 70
UCC3809N1TIN/a93avai1
UCC3809P-1 |UCC3809P1TI/UNITRODEN/a10avai1
UCC3809P-1 |UCC3809P1TIN/a80avai1
UCC3809PW-1 |UCC3809PW1TIN/a800avai1
UCC3809PW-1 |UCC3809PW1TI&BBN/a10avai1
UCC3809PWTR-1 |UCC3809PWTR1TIN/a187avai1


UCC3809DTR-1 ,1ELECTRICAL CHARACTERISTICS : Unless otherwise specified, C = 0.47 F, VDD = 12V. T =T .VREF A JPARA ..
UCC3809DTR-1G4 ,Economy Primary Side Controller 8-SOIC 0 to 70FEATURES DESCRIPTION• User Programmable Soft Start With The UCC3809 family of BCDMOS economy low po ..
UCC3809DTR-2 ,1MAXIMUM RATINGS*VDD.......19VSOIC-8, DIL-8 (Top View)I ...... 25mAVDDD, N and J PackagesI (tpw < 1µ ..
UCC3809DTR-2G4 ,Economy Primary Side Controller 8-SOIC 0 to 70ELECTRICAL CHARACTERISTICS : Unless otherwise specified, C = 0.47 F, VDD = 12V. T =T .VREF A JPARA ..
UCC3809N1 ,1ELECTRICAL CHARACTERISTICS : Unless otherwise specified, C = 0.47 F, VDD = 12V. T =T .VREF A JPARA ..
UCC3809N-1 ,1FEATURES DESCRIPTION• User Programmable Soft Start With The UCC3809 family of BCDMOS economy low po ..
UPA3753GR , MOS FIELD EFFECT TRANSISTOR
UPA502T ,N-CHANNEL MOS FET 5-PIN 2 CIRCUITSDATA SHEETMOS FIELD EFFECT TRANSISTORμPA502TN-CHANNEL MOS FET (5-PIN 2 CIRCUITS)The μPA502T is ..
UPA502T-T1 ,Silicon transistorDATA SHEETMOS FIELD EFFECT TRANSISTORμPA502TN-CHANNEL MOS FET (5-PIN 2 CIRCUITS)The μPA502T is ..
UPA502T-T2 ,Silicon transistorDATA SHEETMOS FIELD EFFECT TRANSISTORμPA502TN-CHANNEL MOS FET (5-PIN 2 CIRCUITS)The μPA502T is ..
UPA503T ,Silicon transistorDATA SHEETMOS FIELD EFFECT TRANSISTORμPA503TP-CHANNEL MOS FET (5-PIN 2 CIRCUITS)The μPA503T i ..
UPA503T-T1 ,Silicon transistorDATA SHEETMOS FIELD EFFECT TRANSISTORμPA503TP-CHANNEL MOS FET (5-PIN 2 CIRCUITS)The μPA503T i ..


UCC38091-UCC3809-1-UCC3809D-1-UCC3809DTR-1-UCC3809DTR-1G4-UCC3809N1-UCC3809N-1-UCC3809P-1-UCC3809PW-1-UCC3809PWTR-1
Economy Primary Side Controller
UCC1809-1/-2
UCC2809-1/-2
UCC3809-1/-2
FEATURES
User Programmable Soft Start With
Active Low Shutdown User Programmable Maximum Duty
Cycle Accessible 5V Reference Undervoltage Lockout Operationto 1MHz 0.4A Source/0.8A Sink FET Driver Low 100µA Startup Current
Economy Primary Side Controller
TYPICAL APPLICATION DIAGRAM
DESCRIPTION

The UCC3809 familyof BCDMOS economy low power integrated circuits
containsall the control and drive circuitry required for off-line and isolated
DC-to-DC fixed frequency current mode switching power supplies with
minimal external parts count. Internally implemented circuits include
undervoltage lockout featuring startup current less than 100µA,a user ac-
cessible voltage reference, logicto ensure latched operation,a PWM com-
parator, anda totem pole output stageto sinkor source peak current. The
output stage, suitable for driving N-Channel MOSFETs,is lowin the off
state.
Oscillator frequency and maximum duty cycle are programmed with two
resistors anda capacitor. The UCC3809 family also features full cycle soft
start.
The family has UVLO thresholds and hysteresis levels for off-line and
DC-to-DC systemsas shownin the tableto the left.
The UCC3809 and the UCC2809 are offeredin the8 pin SOIC (D), PDIP
(N), TSSOP (PW), and MSOP (P) packages. The small TSSOP and
MSOP packages make the device ideal for applications where board
space and height areata premium.
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