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UC2843 Datasheet

The UC2843 is a CURRENTMODE PWM CONTROLLER. Download the datasheet PDF and view key features and specifications below.

Part NumberUC2843
ManufacturerSTMicroelectronics
Overview TheUC3842/3/4/5family of controlICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal externalparts count.Internallyimplemen. to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal externalparts count.Internallyimplementedcircuits include undervoltagelockout featuring start-up current less than 1 mA, a precision reference trimmed for accuracy at the error amp input, Minidip SO14 lo.
Part NumberUC2843
DescriptionCurrent-Mode PWM Controllers
ManufacturerTexas Instruments
Overview The UCx84x series of control integrated circuits provide the features that are necessary to implement off-line or DC-to-DC fixed-frequency current-mode control schemes, with a minimum number of extern.
* Optimized for off-line and DC-to-DC converters
* Low start-up current (< 1mA)
* Automatic feedforward compensation
* Pulse-by-pulse current limiting
* Enhanced load-response characteristics
* Undervoltage lockout with hysteresis
* Double-pulse suppression
* High-current totem-pole output
* Interna.
Part NumberUC2843
Descriptionfixed frequency current mode PWM controller
ManufacturerUMW
Overview The 2842/43/44/45 are fixed frequency current mode PWM controller. They are specially designed for OFF−Line and DC to DC converter applications with a minimal external components. Internally implemen. Pin Connection
* Low Start-Up and Operating Current
* High Current Totem Pole Output
* Undervoltage Lockout With Hysteresis
* Operating Frequency Up To 500KHz Block diagram (toggle flip flop used only in 2844, 2845) V Top view R T Absolute Maximum Ratings Symbol Parameter VCC IO VI ISINK (.

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