1

2

3

4

8

7

6

5

VCC

DRV

GND

ZCD

VO_SNS

COMP

MULTIN

CS

UCC28051

C

BULK

1

2

3

4

8

7

6

5

STATUS

OVP

VDD

OUT

SS

FB

CS

GND

UCC28600

C

SS

C

BP

R

PL

R

SU

R

CS

C

VDD

Primary

Secondary

TL431

Feedback

R

OVP2

R

OVP1

18 V

C

B

N

P

N

S

N

B

M

1

UCC28600

www.ti.com

SLUS646J

– NOVEMBER 2005 – REVISED JULY 2011

8-Pin Quasi-Resonant Flyback Green-Mode Controller

Check for Samples: UCC28600

1

FEATURES

APPLICATIONS

2

•

Green-Mode Controller With Advanced Energy

•

Bias Supplies for LCD-Monitors, LCD-TV,

Saving Features

PDP-TV, and Set Top Boxes

•

Quasi-Resonant Mode Operation for Reduced

•

AC/DC Adapters and Offline Battery Chargers

EMI and Low Switching Losses (Low Voltage

•

Energy Efficient Power Supplies up to 200 W

Switching)

•

Low Standby Current for System No-Load

DESCRIPTION

Power Consumption

The UCC28600 is a PWM controller with advanced

•

Low Startup Current: 25

μA Maximum

energy features to meet stringent world-wide energy

efficiency requirements.

•

Programmable Overvoltage Protection, Line

and Load

UCC28600

integrates

built-in

advanced

energy

•

Internal Overtemperature Protection

saving features with high level protection features to

•

Current Limit Protection

provide cost effective solutions for energy efficient

power supplies. UCC28600 incorporates frequency

– Cycle-by-Cycle Power Limit

fold back and green mode operation to reduce the

– Primary-Side Overcurrent Hiccup Restart

operation frequency at light load and no load

Mode

operations.

•

1-A Sink TrueDrive

™, -0.75-A Source Gate

UCC28600 is offered in the 8-pin SOIC (D) package.

Drive Output

Operating junction temperature range is -40

°C to

•

Programmable Soft-Start

105

°C.

•

Green-Mode Status Pin (PFC Disable Function)

.

.

TYPICAL APPLICATION

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

TrueDrive is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2005–2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.