UC2844AD ,Current Mode PWMsfeatures: startup current• Automatic Feedforward Compensationis less than 0.5 mA, oscillator discha ..
UC2844AD ,Current Mode PWMsUC2842A/3A/4A/5AUC3842A/3A/4A/5A® HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER.TRIMMED OSCILLATOR D ..
UC2844AD ,Current Mode PWMs SLUS224F–SEPTEMBER 1994–REVISED OCTOBER 20174 Revision HistoryNOTE: Page numbers for previous revi ..
UC2844AD ,Current Mode PWMsElectrical Characteristics....... 711.4 Receiving Notification of Documentation Updates 256.6 Typic ..
UC2844AD ,Current Mode PWMsELECTRICAL CHARACTERISTICS ( [note 1] Unless otherwise stated, these specifications apply for-25 < ..
UC2844AD ,Current Mode PWMsfeatures: startup current• Automatic Feedforward Compensationis less than 0.5 mA, oscillator discha ..
UM61512AK-20 , 64K X 8 BIT HIGH SPEED CMOS SRAM
UM61512AS-15 , 64K X 8 BIT HIGH SPEED CMOS SRAM
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
UC2844A-UC2844AD-UC2844AD8-UC2844AD8TR-UC2844ADTR-UC2844AN-UC2844ANG4-UC2844AQD8-UC2844AQD8R
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
VIN
UC2843A
VCC
VREF
RT/CT
GND
ISENSE
OUTPUT
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UC1842A, UC1843A, UC1844A, UC1845A
UC2842A, UC2843A, UC2844A, UC2845A
UC3842A, UC3843A, UC3844A, UC3845ASLUS224F –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
DescriptionThe 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.
Device Comparison Table
Simplified Application Diagram
