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UC2854ADW

UC2854ADW

Active
Texas Instruments

ENHANCED BIPOLAR CCM PFC CONTROLLER WITH 16V/10V UVLO FOR 50HZ-400HZ LINE FREQ., –40°C TO 85°C

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UC2854ADW

UC2854ADW

Active
Texas Instruments

ENHANCED BIPOLAR CCM PFC CONTROLLER WITH 16V/10V UVLO FOR 50HZ-400HZ LINE FREQ., –40°C TO 85°C

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Description

General part information

UC2854 Series

The UC3854A/B products are pin compatible enhanced versions of the UC3854. Like the UC3854, these products provide all of the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shaping the ac input line current waveform to correspond to the ac input line voltage. To do this the UC3854A/B uses average current mode control. Average current mode control maintains stable, low distortion sinusoidal line current without the need for slope compensation, unlike peak current mode control.

A 1%, 7.5-V reference, fixed frequency oscillator, PWM, voltage amplifierwith soft-start, line voltage feedforward (VRMSsquarer), input supply voltage clamp, and over current comparator round out the lilst of feataures.

Available in the 16-pin N (PDIP), DW (SOIC Wide), and J (CDIP) and 20-pin Q (PLCC) package. See Ordering Information table for availability by temperature range.

Technical Specifications

Parameters and characteristics for this part

SpecificationUC2854ADW
Current - Startup250 µA
Frequency - Switching200 kHz
ModeAverage Current
Mounting TypeSurface Mount
Operating Temperature (Max)85 °C
Operating Temperature (Min)-40 °C
Package Length0.295 in
Package Name16-SOIC
Package Width7.5 mm
Voltage - Supply (Maximum)20 V
Voltage - Supply (Minimum)10 VDC

Pricing

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CAD

3D models and CAD resources for this part