UC3853

所属类别：ACDC-和-DCDC-电源
产品名称：高功率因数前置稳压器
厂商：TI
生产批号：08+
封装：8PDIP, 8SOIC
库存状态：有库存
库存量：5000
最低订购量：1
详细资料：

Product Introduction

The UC3853 provides simple, yet high-performance active power factor correction. As the UC1854 uses the same control technology, the 8-pin device utilizes a simplified architecture and an internal oscillator to reduce the number of external components. The UC3853 utilizes a sophisticated multiplier/square/divider circuit, voltage and current loop error amplifier, high-precision voltage reference and implementation with RMS mean line voltage compensation current mode control. This control technology minimizes the change of input voltage input line current distortion over a global scale while maintaining the input voltage, and the continuous closed-loop gain.

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

View the full descriptive datasheet

characteristic

A complete 8-pin power factor solution
Reduce external components
Line voltage compensation for RMS
Precision multiplier/square/divider
The internal 75kHz oscillator is synchronized
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
Working power supply (max) (five)		40
Starting Current (mA)		0.25
Operating Supply Current (mA)		10
Duty Cycle (Max) (%)		95
Actual operating frequency (max) (MHz)		0.115
Pin/Pack		8PDIP，8SOIC

The ICs associated with UC3853 include:

Model	Manufacturers	lot number	encapsulation	illustrate
MC13853-3B-EVK	Freescale	12+	N/A	Three-band low-noise amplifier with bypass switch, 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	New original stock available
UC3853	TI	08+	8PDIP, 8SOIC	High power factor pre-regulator
UC3853N	TI	10+	DIP	High power factor pre-regulator

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