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UC2845ADN/a250avaiCurrent Mode PWMs
UC2845AD8UCCN/a534avaiCurrent Mode PWM Controller
UC2845AD8TRTIN/a798avaiCurrent Mode PWM Controller
UC2845AD8TRG4TIN/a5000avaiCurrent Mode PWM Controller
UC2845ADTRTIN/a424avaiCurrent Mode PWM Controller
UC2845ADTRG4TIN/a2530avaiCurrent Mode PWM Controller 14-SOIC -40 to 85
UC2845ADWTIN/a6avaiCurrent Mode PWM Controller
UC2845ANG4TEXASN/a11avaiCurrent Mode PWM Controller 8-PDIP -40 to 85


UC2845AD8TRG4 ,Current Mode PWM ControllerBlock Diagram... 1011.8 Glossary. 257.3 Feature Description.... 1012 Mechanical, Packaging, and Ord ..
UC2845ADTR ,Current Mode PWM Controller SLUS224F–SEPTEMBER 1994–REVISED OCTOBER 20174 Revision HistoryNOTE: Page numbers for previous revi ..
UC2845ADTRG4 ,Current Mode PWM Controller 14-SOIC -40 to 85Features... 1 8 Application and Implementation...... 148.1 Application Information........ 142 Appl ..
UC2845ADW ,Current Mode PWM ControllerElectrical Characteristics....... 711.4 Receiving Notification of Documentation Updates 256.6 Typic ..
UC2845AN ,HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERUC2842A/3A/4A/5AUC3842A/3A/4A/5A® HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER.TRIMMED OSCILLATOR D ..
UC2845ANG4 ,Current Mode PWM Controller 8-PDIP -40 to 85Support &Product Order Tools &TechnicalCommunityFolder Now Documents SoftwareUC1842A,UC1843A,UC1844 ..
UM621024CV-70L , 128K x 16 CMOS SRAM
UM621024CV-70LL , 128K x 16 CMOS SRAM
UM6264-10 , 8K x 8 CMOS SRAM
UM6264-10L , 8K x 8 CMOS SRAM
UM6264-12 , 8K x 8 CMOS SRAM
UM6264-70L , 8K x 8 CMOS SRAM


UC2845AD-UC2845AD8-UC2845AD8TR-UC2845AD8TRG4-UC2845ADTR-UC2845ADTRG4-UC2845ADW-UC2845ANG4
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
VIN
UC2843A
VCC
VREF
RT/CT
GND
ISENSE
OUTPUT
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SLUS224F –SEPTEMBER 1994–REVISED OCTOBER 2017
UCx84xA Current-Mode PWM Controller Features
Optimized for Off-Line and DC-DC Converters Low Start-Up Current(< 0.5 mA) Trimmed Oscillator Discharge Current Automatic Feedforward Compensation Pulse-by-Pulse Current Limiting Enhanced Load Response Characteristics Undervoltage Lockout With Hysteresis Double Pulse Suppression High-Current Totem Pole Output Internally-Trimmed Bandgap Reference Upto 500-kHz Operation Createa Custom Design Using the UCx84xA With
the WEBENCH® Power Designer Applications Switch Mode Power Supplies (SMPS) DC-DC Converters Power Modules Industrial PSU Battery Operated PSU Description
The UCx84xA familyof control devicesisa pin-for-pin
compatible improved versionof the UCx84x family.
Providing the necessary featuresto control current-
modeor switched-mode power supplies, this family
devices has many improved features: startup current less than 0.5 mA, oscillator dischargeis trimmed
8.3 mA, and during UVLO, the output stage can least10 mAat less than 1.2V for VCC over5
Device Information(1)

(1) Forall available packages, see the orderable addendum
the endofthe data sheet.
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Simplified Application Diagram
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