TL284x, TL384x
CURRENT-MODE PWM CONTROLLERS
SLVS038E – JANUARY 1989 – REVISED DECEMBER 1999
AVAILABLE OPTIONS
PACKAGED DEVICES
SMALL OUTLINE SMALL OUTLINE PLASTIC DIP
CHIP FORM
(Y)
T
A
(D)
(D-8)
(P)
TL3842D
TL3843D
TL3844D
TL3845D
TL3842D-8
TL3843D-8
TL3844D-8
TL3845D-8
TL3842P
TL3843P
TL3844P
TL3845P
TL3842Y
TL3843Y
TL3844Y
TL3845Y
0°C to 70°C
TL2842D
TL2843D
TL2844D
TL2845D
TL2842D-8
TL2843D-8
TL2844D-8
TL2845D-8
TL2842P
TL2843P
TL2844P
TL2845P
–
–
–
–
–40°C to 85°C
The D and D-8 packages are available taped and reeled. Add the suffix R to the device type (i.e.,
TL3842DR or TL3842DR-8). Chip forms are tested at 25°C.
functional block diagram
12
V
CC
34 V NOM
9
UVLO
5-V REF
EN
14
11
REF
+
–
GND
Internal
Bias
V
Good
Logic
ref
VC
7
10
8
RT/CT
OSC
OUTPUT
†
T
POWER
GROUND
Error
Amplifier
S
R
2R
+
–
3
1
5
PWM
Latch
VFB
R
1 V
Current-
Sense
Comparator
COMP
ISENSE
†
The toggle flip-flop is present only in TL2844, TL2845, TL3844, and TL3845.
Pin numbers shown are for the D Package.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
