UC3854N - TI

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

Part No

UC3854N
Manufacturer

TI
ChipWorker Part#

CW9287941
Category

Power Management IC
Package

PDIP-16
Description

TEXAS INSTRUMENTS UC3854N PFC Controller IC, 15V to 35V & 10mA Supply, 15V Lockout, 95% Duty Cycle, 102kHz, DIP-16
Documentation

Datasheet

UC3854N Global Supplier

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UC3854N Specifications

Attribute	Attribute Value

Part Number	UC3854N
Manufacturer	TI
ChipWorker Part#	CW9287941
Category	Power Management IC
Documentation	Datasheet
Mounting Style	Through Hole
Number of Pins	16 Pin
Case/Package	PDIP-16
Frequency	200 kHz
Supply Voltage (DC)	15.0V (min)
Operating Voltage	16V ~ 30V
Power Rating	1 W
Number of Outputs	1 Output
Input Voltage (DC)	18.0 V
Output Voltage	6 V
Output Current	0.5 A
Number of Channels	1 Channel
Number of Positions	16 Position
Input Current	10.0 mA
Power Dissipation	1.00 W
Switching Frequency	200 kHz
Duty Cycle	95 %
Input Voltage (Max)	11 V
Output Voltage (Max)	7.6 V
Output Current (Max)	3.5 A
Maximum Duty Cycle	95 %
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Supply Voltage	14.5V ~ 30V
Supply Voltage (Max)	35 V
Supply Voltage (Min)	15 V
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Size-Length	19.3 mm
Size-Width	6.35 mm
Size-Height	4.57 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 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

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