RDEL

NC

VIN

NC

LINEOV

CS

RSLOPE

FB

SS/SD

PGND

20

19

18

17

16

6

7

8

9

10

15 14 13 12 11

1

2

3

4

5

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

VIN

N/C

RDEL

RON

ROFF

VREF

SYNC

GND

CS

RSLOPE

N/C

LINEOV

LINEUV

VDD

PVDD

OUT

AUX

PGND

SS/SD

FB

UCC2897A

www.ti.com

SLUS829E – AUGUST 2008 – REVISED APRIL 2015

5 Device Options

CYCLE-BY-

110-V HV JFET

PART NUMBER

AUX OUTPUT

HICCUP MODE

APPLICATION

CYCLE CS

START-UP

POLARITY

CS THRESHOLD

THRESHOLD

CIRCUIT

DC/DC

P-Channel

0.5 V

0.75 V

Yes

UCC2897APW

UCC2897ARGP

(1)

The PW package is available taped and reeled. Add R suffix to the device type (for example: UCC2897APWR) to order quantities of

2,000 devices per reel. Bulk quantities are 70 units per tube. The RGP package is available in two options of tape and reel. The RGPT

is orderable in small reels of 250 (for example: UCC2897ARGPT); the RGPR contains 3000 pieces per reel (for example:

UCC2897ARGPR).

(2)

The TSSOP-20 (PW) and QFN-20 (RGP) package uses Pb-free lead finish of Pd-Ni-Au which is compatible with MSL level 1 at 255°C

to 260°C peak reflow temperature and compatible with either lead-free, tin, or lead soldering operations.

6 Pin Configuration and Functions

PW Package

20-Pin TSSOP

Top View

RGP Package

20-Pin VQFN

Bottom View

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