UC3854DWG4

UC3854DWG4, High Power Factor Preregulator, DIP, 35V, 11V, Texas Instruments

Rated 5 Rating 5 | reviews | Write a review

Price:: US $0.79~0.98 / piece [Get Latest Price]

Reference price:

Qty (lots)	Price/lot
10 ~ 99 :	0.98 / Piece
100 ~ 1000 :	0.79 / Piece

PartNumber:: UC3854DWG4

Brand:: Texas Instruments - TI | Pack: | D/C:

Availability:: Supply Ability: 5000/Day Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

Quantity:: piece

Total Price:: US $0

Place Order via Escrow Service

Not exactly what you want? Post a quick Buying Request!

Sold By

Ms. Lucy's store

(Hong Kong)

100% Positive feedback

Detailed seller ratings

Visit Store

Contact Now

Esrcow Service

Place orders confidently and securely via it

Safe payments
Quick and easy transactions
Free service charges

Learn More >>

Previous Next

Products Upload time: 2013-07-10

From Other Seller

Part Number:UC3854DWG4
US $0.79 - 0.98
Quantity:

piece

Product Summary

The UC3854DWG4 is a High Power Factor Preregulator. The UC3854DWG4 provides active power factor correction for power systems that otherwise would draw non-sinusoidal current from sinusoidal power lines. This device implements all the control functions necessary to build a power supply capable of optimally using available power-line current while minimizing line-current distortion. To do this, the UC3854DWG4 contains a voltage amplifier, an analog multiplier/divider, a current amplifier, and a fixed-frequency PWM. In addition, the UC3854DWG4 contains a power MOSFET compatible gate driver, 7.5V reference, line anticipator, load-enable comparator, low-supply detector, and over-current comparator. The UC3854DWG4 uses average current-mode control to accomplish fixedfrequency current control with stability and low distortion. Unlike peak current-mode, average current control accurately maintains sinusoidal line current without slope compensation and with minimal response to noise transients.

Parametrics

UC3854DWG4 absolute maximum ratings: (1)Supply Voltage VCC: 35V; (2)GT Drv Current, Continuous: 0.5A; (3)GT Drv Current, 50% Duty Cycle: 1.5A; (4)Input Voltage, VSENSE, VRMS: 11V; (5)Input Voltage, ISENSE, Mult Out: 11V; (6)Input Voltage, PKLMT: 5V; (7)Input Current, RSET, IAC, PKLMT, ENA: 10mA; (8)Power Dissipation: 1W; (9)Storage Temperature: –65℃ to +150℃; (10)Lead Temperature (Soldering, 10 Seconds): +300℃.

Features

UC3854DWG4 features: (1)Control Boost PWM to 0.99 Power Factor; (2)Limit Line Current Distortion To <5%; (3)World-Wide Operation Without Switches; (4)Feed-Forward Line Regulation; (5)Average Current-Mode Control; (6)Low Noise Sensitivity; (7)Low Start-Up Supply Current; (8)Fixed-Frequency PWM Drive; (9)Low-Offset Analog Multiplier/Divider; (10)1A Totem-Pole Gate Driver; (11)Precision Voltage Reference.