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UC3853

Category:ACDC- and -DCDC-power supply
Product Name:High power factor preregulator
Manufacturers:TI
Production Batch Number:08+
Encapsulation:8PDIP, 8SOIC
Stock Status:There is stock
Stock Quantity:5000
Minimum order quantity: 1
Details:

Product introduction

The UC3853 provides simple, yet high-performance active power factor correction. As the UC1854 uses the same control technology, this 8-pin device utilizes a simplified architecture and internal oscillator to reduce external component count. The UC3853 employs precision multiplier/square/divider circuitry, voltage and current loop error amplifiers, a precision voltage reference, and implements current-mode control with RMS average line voltage compensation. This control technique keeps closed-loop gain while maintaining the input voltage, minimizing the worldwide variation in input voltage input line current distortion.

The internal 75kHz oscillator includes an external clock input that allows synchronization to downstream converters.

View the full description data table

characteristic

Complete 8-pin power factor solution
Fewer external components
Line voltage compensation for RMS
Precision multiplier/square/divider
An internal 75kHz oscillator is synchronizable
Average current mode PWM control
Overvoltage protection comparison
High current, gate driver clamping

parameter

		UC3853
On/Off of Undervoltage Lockout Threshold (5)		11.5/9.5
Operating power supply (max) (5)		40
Starting current (mA)		0.25
Operating Supply Current (mA)		10
Duty cycle (max.) (%)		95
Actual operating frequency (max) (MHz)		0.115
Pins/Packets		8PDIP，8SOIC

andUC3853Related ICs are:

Model	Manufacturers	lot number	encapsulation	illustrate
MC13853-3B-EVK	Freescale	12+	N/A	Three-band low noise amplifier with bypass switch and selectable current
LP3853ESX-2.5	NSC	09+	TO263 5	3A fast ultra-low dropout linear regulation
LP3853ET-3.3	NSC	09+	TO-220-5	3A fast ultra-low dropout linear regulation
LP3853ET-2.5	NSC	08+	TO-220-5	3A fast ultra-low dropout linear regulation
LP3853ES-5.0	NSC	10+	TO-220	3A fast ultra-low dropout linear regulation
LP3853ET-5.0	NSC	10+	TO-220	3A fast ultra-low dropout linear regulation
LP3853ESX-5.0	NSC	09+	TO-263	3A fast ultra-low dropout linear regulation
LP3853ESX-3.3	NSC	09+	TO-263	3A fast ultra-low dropout linear regulation
LP3853ESX-1.8	NSC	10+	TO-263	3A fast ultra-low dropout linear regulation
LP3853ES-1.8	NSC	10+	TO263-5	3A fast ultra-low dropout linear regulation
LP3853ET-1.8	NSC	08+	TO-220	3A fast ultra-low dropout linear regulation
LP3853ES-3.3	NSC	10+	TO-252	3A fast ultra-low dropout linear regulation
LP3853ES-2.5	NSC	10+11+	TO-263	3A fast ultra-low dropout linear regulation
BA3853	ROHM	08+	SSOP-24	Brand new original
XRA3853AFS	N／A	01+	SOP	Brand new original in stock
UC3853	TI	08+	8PDIP, 8SOIC	High power factor preregulator
UC3853N	TI	10+	DIP	High power factor preregulator

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