UC3854BDW - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

UC3854BDW
Manufacturer

TI
ChipWorker Part#

CW7871407
Category

Power Management IC
Package

SOIC-16
Description

TEXAS INSTRUMENTS UC3854BDW PFC Controller IC, 10V to 20V & 12mA Supply, 10V Lockout, 95% Duty Cycle, 200kHz, SOIC-16
Documentation

Datasheet

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UC3854BDW Specifications

Attribute	Attribute Value

Part Number	UC3854BDW
Manufacturer	TI
ChipWorker Part#	CW7871407
Category	Power Management IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	16 Pin
Case/Package	SOIC-16
Frequency	200 kHz
Supply Voltage (DC)	10.0V (min)
Power Rating	1 W
Number of Outputs	1 Output
Output Voltage	12.8 V
Output Current	1 A
Number of Channels	1 Channel
Number of Positions	16 Position
Switching Frequency	200 kHz
Duty Cycle	95 %
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Supply Voltage	10V ~ 20V
Supply Voltage (Max)	20 V
Supply Voltage (Min)	10 V
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Size-Length	10.28 mm
Size-Width	7.52 mm
Size-Height	2.35 mm
Operating Temperature	0℃ ~ 70℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15
ECCN Code	EAR99

Product Description

The UC3854BDW is an enhanced high Power Factor Preregulator provides 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 UC3854B 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. It is improved 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 (16/10V for offline, 10.5/10V for startup from an auxiliary 12V regulator), lower startup supply current and an enhanced multiply/divide circuit.
Controls boost PWM to near-unity power factor
Limits line current distortion to <3%
World-wide operation without switches
Accurate power limiting
Fixed-frequency average current-mode control
Low-offset current amplifier
Integrated current- and voltage-amplifier output clamps
Faster and improved accuracy ENABLE comparator
Green product and no Sb/Br
Device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

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