UCC2975, UCC2976, UCC2977

UCC3975, UCC3976, UCC3977

SLUS499A – NOVEMBER 2001 – REVISED JANUARY 2002

3

www.ti.com

description (continued)

UDG–01098

RANGE

1

3

2

4

8

6

7

5

OPEN/SD

OSC

COMP

FB

VDD

OUTP

OUTN

GND

CFB

RFB

DFB

CCFL

RCS

COSC

ROSC

RHV

RCNT

VDD

COPEN

ROPEN

SHUTDOWN

UCC3975

N

VCNT

PIEZO

XFMR

Figure 3. UCC3975-Based CCFL Power Supply Using a Resonant Flyback Topology

Supply voltage

VDD

15 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage

OPEN/SD, OSC, COMP, FB, VDD, OUTP

. . . . . . . . . . . . . .

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–40

°C to 125°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

300

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

§ All voltages are respect to GND.

AVAILABLE OPTIONS

PACKAGED DEVICES† TSSOP (PW)

TA

TOPOLOGY

TA

FLYBACK

HALF-BRIDGE

PUSH-PULL

–40

°C to 85°C

UCC2975PW

UCC2976PW

UCC2977PW

0

°C to 70°C

UCC3975PW

UCC3976PW

UCC3977PW

† The PW package is available taped and reeled. Add TR suffix to device type

(e.g. UCC2975TRPW) to order quantities of 2500 devices per reel.