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UC2852DW, UC2852NG4, UC2853

Table of contents:
Info of UC2852DW
Info of UC2852NG4
Info of UC2853

UC2852DW, UC2852NG4, UC2853 Selling Leads, Datasheet

MFG:Texas Instruments Category:Integrated Circuits (ICs) Package Cooled:98+ D/C:SOP-16

UC2852DW, UC2852NG4, UC2853 Datasheet download

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Part Number: UC2852DW

Category: Integrated Circuits (ICs)

MFG: Texas Instruments

Package Cooled: 98+

D/C: SOP-16

Description: IC PFC CONTROLLER CCM 8DIP

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UC2852NG4 Parameters

Technical/Catalog Information	UC2852NG4
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
Packaging	Tube
Package / Case	8-DIP (300 mil)
Voltage - Supply	16.3 V ~ 30 V
Mode	Continuous Conduction (CCM)
Frequency - Switching	200kHz
Current - Startup	400A
Operating Temperature	-40°C ~ 85°C
Drawing Number	*
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	UC2852NG4 UC2852NG4

UC2853 General Description

The UC3853 provides simple, yet high performance active power factor correction. Using the same control technique as the UC1854, this 8-pin device exploits a simplified architecture and an internal oscillator to minimize external component count. The UC3853 incorporates a precision multiplier/ squarer/divider circuit, voltage and current loop error amplifiers, and a precision voltage reference to implement average current mode control with RMS line voltage compensation. This control technique maintains constant loop gain with changes in input voltage, which minimizes input line current distortion over the worldwide input voltage range.

The internal 75kHz oscillator includes an external clock input, allowing synchronization to downstream converters. Additionally, the device features an overvoltage protection comparator, a clamped MOSFET gate driver which self-biases low during undervoltage lockout, and low startup and supply current.

These devices are available in 8-pin plastic and ceramic dual in-line (DIP) packages, and 8-lead small outline (SOIC) packages. The UC1853 is specified for operation from 55°C to +125°C, the UC2853 is specified for operation from 25°C to +85°C, and the UC3853 is specified for operation from 0°C to +70°C.

UC2853 Maximum Ratings

Supply Voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Output Drive Current,
Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.125A
Peak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5A
Output Minimum Voltage . . . . . . . . . . . . . . . . . . . . . . . . .0.3V
IAC Maximum Input Current . . . . . . . . . . . . . . . . . . . . . . . .1mA
IMO Maximum Output Current . . . . . . . . . . . . . . . . . . . . .2mA
IMO Minimum Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3V
FB Maximum Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . .5V
VCOMP Maximum Voltage. . . . . . . . . . . . . . . . . . . . . . . . . 6.2V
ICOMP Sourcing Current . . . . . . . . . . . . . . . . . . . .Self-Limiting
ICOMP Sinking Current . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
ICOMP Maximum Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 7.2V
Storage Temperature . . . . . . . . . . . . . . . . . .65°C to +150°C
Junction Temperature. . . . . . . . . . . . . . . . . . 55°C to +150°C
Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . +300°C
All voltages with respect to GND. Currents are positive into,
negative out of the specified terminal. Consult Packaging Section
of Databook for thermal limitations and considerations of
packages.

UC2853 Features

· Complete 8-pin Power Factor Solution
· Reduced External Components
· RMS Line Voltage Compensation
· Precision Multiplier/Squarer/Divider
· Internal 75kHz Synchronizable Oscillator
· Average Current Mode PWM Control
· Overvoltage Protection Comparator
· High Current, Clamped Gate Driver

UC2853 Connection Diagram

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