ꢀ ꢁꢁꢂ ꢃ ꢄ ꢃ ꢅꢆꢇ ꢈꢇꢉ ꢀꢁ ꢁꢂ ꢃ ꢄ ꢃ ꢅꢆꢂ ꢈꢇ
ꢋ
ꢊ
ꢋ
ꢌ
ꢍ
ꢋ
ꢌ
ꢎ
ꢏ
ꢁ
ꢀ
ꢏ
ꢏ
ꢎ
ꢐ
ꢑ
ꢒ
ꢓ
ꢎ
ꢍ
ꢀ
ꢔ
ꢕ
ꢆ
ꢍ
ꢀ
ꢊꢊ
ꢍ
ꢌ
ꢒ
SGLS183A − AUGUST 2003 − REVISED APRIL 2008
†
ORDERING INFORMATION
UVLO
Option
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
‡
PACKAGE
T
A
SOIC (D)
Tape and reel
Tape and reel
Tape and reel
Tape and reel
UCC2808AQDR−1Q1
UCC2808AD-1Q1
2808A1
−40°C to 125°C
12.5 V/8.3 V
§
TSSOP (PW)
SOIC (D)
UCC2808AQPWR−1Q1
UCC2808AQDR−2Q1
UCC2808AD-2Q1
2808A2
−40°C to 125°C
4.3 V/4.1 V
§
UCC2808AQPWR−2Q1
TSSOP (PW)
†
For the most current package and ordering information, see the Package Option Addendum at the end of this document,
or see the TI web site at http://www.ti.com.
Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.
Product Preview.
‡
§
block diagram
FB
2
COMP
1
CS
3
8
7
VDD
OVERCURRENT
COMPARATOR
22 k
Ω
PEAK CURRENT
COMPARATOR
14 V
0.75 V
2.0 V
0.5 V
2.2 V
S
OUTA
VDD OK
OSCILLATOR
Q
Q
PWM
LATCH
R
S
R
1.2R
Q
Q
S
Q
R
VDD−1 V
T
PWM
COMPARATOR
VDD
0.5 V
R
SOFT START
6
5
OUTB
GND
VOLTAGE
REFERENCE
SLOPE = 1 V/ms
4
Note: Pinout shown is for SOIC package. TSSOP pinout is different.
RC
UDG-00097
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
