TEXAS INSTRUMENTS  UC3854N  PFC PRE-REGULATOR, 35V, DIP-16

TEXAS INSTRUMENTS UC3854N

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Product Overview


The UC3854N is a High Power Factor Preregulator that 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, it contains a voltage amplifier, an analogue multiplier/divider, a current amplifier and a fixed-frequency PWM. In addition, the UC3854 contains a power MOSFET compatible gate driver, 7.5V reference, line anticipator, load-enable comparator, low-supply detector and over-current comparator. The UC3854 uses average current-mode control to accomplish fixed-frequency 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.
  • Control boost PWM to 0.99 power factor
  • Limit line current distortion to <5%
  • World-wide operation without switches
  • Feed-forward line regulation
  • Average current-mode control
  • Low noise sensitivity
  • Low start-up supply current
  • Fixed-frequency PWM drive
  • Low-offset analogue multiplier/divider
  • 1A Totem-pole gate driver
  • Precision voltage reference
  • Green product and no Sb/Br

Applications

Power Management
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Product Specifications, Documents & More


  • Controller IC Case Style: DIP
  • Digital IC Case Style: DIP
  • Duty Cycle (%): 95%
  • Frequency: 200kHz
  • MSL: -
  • No. of Pins: 16
  • Operating Supply Current: 10mA
  • Operating Temperature Max: 70°C
  • Operating Temperature Min: 0°C
  • Packaging: Each
  • SVHC: No SVHC (15-Jun-2015)
  • Startup Current: 1.5mA
  • Supply Voltage Max: 35V
  • Supply Voltage Min: 15V
  • Supply Voltage Range: 15V to 35V
  • UVLO: 16V

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Availability

Availability:  162


  • 162 in stock for same day shipping
 
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    More stock available week commencing 3/28/16

Price for: Each 1

Minimum order quantity: 1

Order multiple quantity: 1

Price: $4.22 $4.22

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Price

Quantity List Price
1 - 9 $4.22
10 - 24 $3.76
25 - 49 $3.40
50 - 99 $3.23
100 - 249 $3.09
250 - 499 $2.79
500 - 999 $2.26
1000+ $2.00
 
 
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Substitutes


  Newark Part No. Manufacturer Part No Manufacturer / Description
Availability Price Qty
ascdsc ascdsc ascdsc ascdsc ascdsc
Exact
71J8481
UC3854NG4

UC3854NG4

TEXAS INSTRUMENTS

PFC PRE-REGULATOR, 35V, 16-DIP

0

Price for: Each 1

100+ $3.09 250+ $2.79 500+ $2.26 1000+ $2.00

Buy
    More stock available week commencing 3/28/16

Not Normally Stocked

Non-Cancelable / Non Returnable

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