UCC25702DTR ,Advanced Voltage Mode Pulse Width ModulatorMAXIMUM RATINGSSupply voltage (Supply current limited to 20mA) ........ 15VT =T UVLO Package Part N ..
UCC25702DTR ,Advanced Voltage Mode Pulse Width ModulatorMAXIMUM RATINGSSupply voltage (Supply current limited to 20mA) ........ 15VT =T UVLO Package Part N ..
UCC25702DTRG4 ,Advanced Voltage Mode Pulse Width Modulator 14-SOIC -40 to 85FEATURES DESCRIPTION700kHz Operation The UCC35701/UCC35702 family of pulse width modulators is inte ..
UCC25702N ,Advanced Voltage Mode Pulse Width ModulatorELECTRICAL CHARACTERISTICS:Unless otherwise specified, V = 11V, RT = 60.4k, C = 330pF, C =C =DD T R ..
UCC25702NG4 ,Advanced Voltage Mode Pulse Width Modulator 14-PDIP -40 to 85ELECTRICAL CHARACTERISTICS:Unless otherwise specified, V = 11V, RT = 60.4k, C = 330pF, C =C =DD T R ..
UCC25702PW ,Advanced Voltage Mode Pulse Width ModulatorELECTRICAL CHARACTERISTICS:Unless otherwise specified, V = 11V, RT = 60.4k, C = 330pF, C =C =DD T R ..
UNR921TJ ,Composite DeviceElectrical Characteristics T = 25°CaParameter Symbol Conditions Min Typ Max UnitCollector cutoff c ..
UNR921TJ ,Composite DeviceTransistors with built-in ResistorUNR92XXJ Series (UN92XXJ Series)Silicon NPN epitaxial planer type ..
UNR92A1J ,Silicon NPN epitaxial planar typeElectrical Characteristics T = 25°C±3°CaParameter Symbol Conditions Min Typ Max UnitCollector-base ..
UP0.4C-150-R , Miniature size and rugged construction
UP04113 ,Composite DeviceAbsolute Maximum Ratings T = 25°Ca3: Collector (Tr2) 6: Collector (Tr1)SSMini6-F1 PackageParameter ..
UP04113 ,Composite DeviceComposite TransistorsUP0411x SeriesSilicon PNP epitaxial planar typeUnit: mm+0.050.20(0.30) 0.10±0. ..
UCC25702D-UCC25702DTR-UCC25702DTRG4-UCC25702N-UCC25702NG4-UCC25702PW-UCC25702PWG4-UCC25702PWTR-UCC25702PWTRG4
Advanced Voltage Mode Pulse Width Modulator
UCC15701/2
UCC25701/2
UCC35701/2Advanced Voltage Mode Pulse Width Modulator
DESCRIPTIONThe UCC35701/UCC35702 familyof pulse width modulatorsis intendedfor
isolated switching power supplies using primary side control. They can be
used for both off-line applications and DC/DC converter designs suchasin distributed power system architectureorasa telecom power source.
The devices feature low startup current, allowing for efficient off-line start-
ing, yet have sufficient output driveto switch power MOSFETsin excessof
500kHz.
Voltage feed forward compensationis operational overa 5:1 input range
and provides fast and accurate responseto input voltage changes overa
4:1 range. An accurate volt-second clamp and maximum duty cycle limit
are also featured.
Fault protectionis providedby pulseby pulse current limitingas wellas the
abilityto latch off aftera programmable numberof repetitive faults has oc-
curred.
Two UVLO options are offered. UCC35701 family has turn-on and turn-off
thresholdsof 13V/9V and UCC35702 family has thresholdsof 9.6V/8.8V.
The UCC35701/2 and the UCC25701/2 are offeredin the14 pin SOIC (D), pin PDIP (N)orin 14 pin TSSOP (PW) packages. The UCC15701/2is
offeredin the14 pin CDIP (J) package.
TYPICAL APPLICATION DIAGRAM
FEATURES700kHz Operation
Integrated Oscillator/ Voltage Feed
Forward Compensation
Accurate Duty Cycle Limit
Accurate Volt-second Clamp
Optocoupler Interface
Fault Counting Shutdown
Fault Latchoffor Automatic Shutdown
Soft Stop Optimizedfor Synchronous
Rectification Peak Gate Drive Output
130�A Start-up Current
750�A Operating Current
