UC3854AN

preregulator, 22V, 1.5A, DIP

Rated 5 Rating 5 | reviews | Write a review

Price:: US $1.16~1.50 / piece [Get Latest Price]

Reference price:

Qty (lots)	Price/lot
100 ~ 500 :	1.50 / Piece
500 ~ 1000 :	1.34 / Piece
1000 ~ 5000 :	1.16 / Piece

PartNumber:: UC3854AN

Brand:: Texas Instruments - TI | Pack: DIP | D/C: 11+

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

Quantity:: piece

Total Price:: US $0

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Products Upload time: 2013-01-11

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Part Number:UC3854AN
US $1.16 - 1.50
Quantity:

piece

Product Summary

UC3854AN is a advanced high-power factor preregulator. The UC3854AN provides all of the functions necessary for active power factor corrected preregulators. To do this the UC3854AN uses average current mode control. The UC3854AN improves upon the UC3854 by offering a wide bandwidth, low offset current amplifier a faster responding and improved accuracy enable comparator, a VREF GOOD comparator, UVLO threshold options (16 V/10 V for offline, 10.5 V/10 V for startup from an auxiliary 12 V regulator) , lower startup supply current, and an enhanced multiply/divide circuit.

Parametrics

UC3854AN absolute maximum ratings: (1) Supply voltage, VCC: 22V; (2) GTDRV current, IGTDRV: 0.5A(Continuous) ; (3) GTDRV Current, IGTDRV: 1.5A (50% duty cycle) ; (4) Input voltage: 11V (VSENSE, VRMS ISENSE MOUT) , 5V (PKLMT) ; (5) Input current: 10mA ( RSET, IAC, PKLMT, ENA) ; (6) Power dissipation: 1W; (7) Junction temperature, Tj: -55 to +150°C; (8) Storage temperature, Tstg: -65 to 150°C; (9) Lead temperature, T 1,6 mm (1/16 inch) from case for 10 seconds: 300°C.

Features

UC3854AN features: (1) Controls Boost PWM to Near-Unity Power Factor; (2) Limits Line Current Distortion To< 3%; (3) World-Wide Operation Without Switches; (4) Accurate Power Limiting; (5) Fixed-Frequency Average Current-Mode Control; (6) High Bandwidth (5MHz) , Low-Offset Current Amplifier; (7) Integrated Current- and Voltage Amplifier Output Clamps; (8) Multiplier Improvements: Linearity, 500mV VAC Offset (Eliminates External Resistor, 0V to 5V Multout Common-Mode Range; (9) VREF GOOD Comparator; (10) Faster and Improved Accuracy ENABLE Comparator; (11) UVLO Options (16V/10V or 10.5V/10V) ; (12) 300-μA Start-Up Supply Current.