
4
UCC1800/1/2/3/4/5
UCC2800/1/2/3/4/5
UCC3800/1/2/3/4/5
ELECTRICAL CHARACTERISTICS
Unless otherwise stated, these specifications apply for –55
°
C
≤
T
A
≤
+125°C for
UCC180x; –40°C
≤
T
A
≤
+85°C for UCC280x; 0°C
≤
T
A
≤
+70°C for UCC380x; V
CC
=10V (Note 3); RT=100k from REF to RC;
CT=330pF from RC to GND; 0.1 F capacitor from V
CC
to GND; 0.1 F capacitor from V
REF
to GND. T
A
=T
J
.
PARAMETER
TEST CONDITIONS
UCC180X
UCC280X
UCC380X
UNITS
Output Section
OUT Low Level
I=20mA, all parts
I=200mA, all parts
I=50mA, VCC=5V, UCCx803/5
I=20mA, VCC=0V, all parts
I=–20mA, all parts
I=–200mA, all parts
I=–50mA,VCC=5V, UCCx803/5
C
L
=1nF
C
L
=1nF
0.1
0.35
0.15
0.7
0.15
1.0
0.4
41
44
0.4
0.90
0.40
1.2
0.40
1.9
0.9
70
75
0.1
0.35
0.15
0.7
0.15
1.0
0.4
41
44
0.4
0.90
0.40
1.2
0.40
1.9
0.9
70
75
V
V
V
V
V
V
V
ns
ns
OUT High V
SAT
(V
CC
-OUT)
Rise Time
Fall Time
Undervoltage Lockout Section
Start Threshold (Note 8)
UCCx800
UCCx801
UCCx802/4
UCCx803/5
UCCx1800
UCCx1801
UCCx802/4
UCCx803/5
6.6
8.6
11.5
3.7
6.3
6.8
7.6
3.2
7.2
9.4
12.5
4.1
6.9
7.4
8.3
3.6
7.8
10.2
13.5
4.5
7.5
8.0
9.0
4.0
6.6
8.6
11.5
3.7
6.3
6.8
7.6
3.2
7.2
9.4
12.5
4.1
6.9
7.4
8.3
3.6
7.8
10.2
13.5
4.5
7.5
8.0
9.0
4.0
V
V
V
V
V
V
V
V
Stop Threshold (Note 8)
Undervoltage Lockout Section (cont.)
Start to Stop Hysteresis
UCCx800
UCCx801
UCCx802/4
UCCx803/5
0.12
1.6
3.5
0.2
0.3
2
4.2
0.5
0.48
2.4
5.1
0.8
0.12
1.6
3.5
0.2
0.3
2
4.2
0.5
0.48
2.4
5.1
0.8
V
V
V
V
Soft Start Section
COMP Rise Time
Overall Section
Start-up Current
Operating Supply Current
VCC Internal Zener Voltage
VCC Internal Zener Voltage Minus
Start Threshold Voltage
FB=1.8V, Rise from 0.5V to REF–1V
4
10
4
10
ms
V
CC
< Start Threshold
FB=0V, CS=0V
I
CC
=10mA (Note 8), (Note 10)
UCCx802/4 (Note 8)
0.1
0.5
13.5
1.0
0.2
1.0
15
0.1
0.5
13.5
1.0
0.2
1.0
15
mA
mA
V
V
12
0.5
12
0.5
Note 3: Adjust VCC above the start threshold before setting at 10V.
Note 4: Oscillator frequency for the UCCx800, UCCx802 and UCCx803 is the output frequency.
Oscillator frequency for the UCCx801, UCCx804 and UCCx805 is twice the output frequency.
V
V
COMP
=
≤
Note 5: Gain is defined by:
A
V
V
CS
CS
≤
0
08
.
Note 6: Parameter measured at trip point of latch with Pin 2 at 0V.
Note 7: Total Variation includes temperature stability and load regulation.
Note 8: Start Threshold, Stop Threshold and Zener Shunt Thresholds track one another.
Note 9: Guaranteed by design. Not 100% tested in production.
Note 10: The device is fully operating in clamp mode as the forcing current is higher than the normal operating supply current.