UCC1809-1/-2
UCC2809-1/-2
UCC3809-1/-2
ABSOLUTE MAXIMUM RATINGS*
VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19V
I
VDD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA
I
OUT
(tpw < 1µs and Duty Cycle < 10%) . . . . . . . . –0.4A to 0.8A
RT1, RT2, SS . . . . . . . . . . . . . . . . . . . . . . –0.3V to REF + 0.3V
I
REF
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –15mA
Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . –55°C to +150°C
Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300°C
* Values beyond which damage may occur.
All voltages are with respect to ground unless otherwise stated.
Currents are positive into, negative out of the specified termi-
nal. Consult Packaging Section of Databook for thermal limita-
tions and considerations of packages.
CONNECTION DIAGRAM
SOIC-8, DIL-8 (Top View)
D, N and J Packages
TSSOP-8 (Top View)
PW Package
1
2
3
4
FB
SS
RT1
RT2
REF
VDD
OUT
GND
8
7
6
5
MSOP-8 (Top View)
P Package
1
2
3
4
FB
SS
RT1
RT2
REF
VDD
OUT
GND
8
7
6
5
ORDERING INFORMATION
UCC1809-X
UCC2809-X
UCC3809-X
Temperature Range
–55°C to +125°C
–40°C to +85°C
0°C to +70°C
Available Packages
J
N, D, P, PW
N, D, P, PW
UCC
809
–
UVLO OPTION
PACKAGE
TEMPERATURE RANGE
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, C
VREF
= 0.47
mF,
VDD = 12V. T
A
= T
J
.
:
PARAMETER
Supply Section
VDD Clamp
I
VDD
I
VDD
Starting
I
VDD
Standby
Undervoltage Lockout Section
Start Threshold (UCCx809-1)
UVLO Hysteresis (UCCx809-1)
Start Threshold (UCCx809-2)
UVLO Hysteresis (UCCx809-2)
Voltage Reference Section
Output Voltage
Line Regulation
Load Regulation
Comparator Section
I
FB
Comparator Threshold
OUT Propagation Delay (No Load)
TEST CONDITIONS
I
VDD
= 10mA
No Load
(Note 1)
UCCx809-1, VDD = Start Threshold - 300mV
UCCx809-2, VDD = Start Threshold - 300mV
MIN
16
TYP
17.5
600
110
110
130
MAX
19
900
125
170
10.4
15.6
UNIT
V
µA
µA
µA
µA
V
V
V
V
V
mV
mV
nA
V
ns
9.4
1.65
14.0
6.2
I
REF
= 0mA
VDD = 10V to 15V
I
REF
= 0mA to 5mA
Output Off
0.9
V
FB
= 0.8V to 1.2V at T
R
= 10ns
4.75
5
2
2
–100
0.95
50
5.25
1
100
2
TI [ TEXAS INSTRUMENTS ]
