UCC1800/1/2/3/4/5
UCC2800/1/2/3/4/5
UCC3800/1/2/3/4/5
ELECTRICAL CHARACTERISTICSUnless otherwise stated, these specifications apply for –55°C ≤ TA ≤ +125°C for
UCC180x; –40°C ≤ TA ≤ +85°C for UCC280x; 0°C ≤ TA ≤ +70°C for UCC380x; VCC=10V (Note 3); RT=100k from REF to RC;
CT=330pF from RC to GND; 0.1 F capacitor from VCC to GND; 0.1 F capacitor from VREF to GND. TA=TJ.
PARAMETER
TEST CONDITIONS
UCC180X
UCC280X
UCC380X
UNITS
MIN TYP MAX MIN TYP MAX
Reference Section
Output Voltage
TJ=+25°C, I=0.2mA, UCCx800/1/2/4
TJ=+25°C, I=0.2mA, UCCx803/5
0.2mA<I<5mA
4.925 5.00 5.075 4.925 5.00 5.075
3.94 4.00 4.06 3.94 4.00 4.06
V
Load Regulation
Line Regulation
10
30
10
25
mV
TJ=+25°C,
1.9
1.9
mV/V
V
CC=10V to Clamp (IVCC=25mA)
TJ=–55°C to +125°C,
CC=10V to Clamp (IVCC=25mA)
2.5
2.1
mV/V
V
Total Variation
UCCx800/1/2/4 (Note 7)
4.88 5.00 5.10 4.88 5.00 5.10
3.90 4.00 4.08 3.90 4.00 4.08
V
V
UCCx803/5 (Note 7)
Output Noise Voltage
Long Term Stability
Output Short Circuit
Oscillator Section
Oscillator Frequency
10Hz ≤ f ≤ 10kHz, TJ=+25°C (Note 9)
TA=+125°C, 1000 Hours (Note 9)
130
5
130
5
µV
mV
mA
–5
–35
–5
–35
UCCx800/1/2/4 (Note 4)
UCCx803/5 (Note 4)
(Note 9)
40
26
46
31
52
36
40
26
46
31
52
36
kHz
kHz
%
Temperature Stability
Amplitude peak-to-peak
Oscillator Peak Voltage
Error Amplifier Section
Input Voltage
2.5
2.5
2.25 2.40 2.55 2.25 2.40 2.55
2.45 2.45
V
V
COMP=2.5V; UCCx800/1/2/4
COMP=2.0V; UCCx803/5
2.44 2.50 2.56 2.44 2.50 2.56
V
1.95
–1
2.0
2.05 1.95
2.0
2.05
1
Input Bias Current
Open Loop Voltage Gain
COMP Sink Current
COMP Source Current
Gain Bandwidth Product
PWM Section
1
–1
60
µA
dB
60
80
80
FB=2.7V, COMP=1.1V
FB=1.8V, COMP=REF–1.2V
(Note 9)
0.3
3.5
0.4
2.5
mA
mA
MHz
–0.2 –0.5 –0.8 –0.2 –0.5 –0.8
2
2
Maximum Duty Cycle
UCCx800/2/3
UCCx801/4/5
COMP=0V
97
48
99
49
100
50
0
97
48
99
49
100
50
0
%
%
Minimum Duty Cycle
Current Sense Section
Gain
(Note 5)
1.10 1.65 1.80 1.10 1.65 1.80
V/V
V
Maximum Input Signal
Input Bias Current
CS Blank Time
COMP=5V (Note 6)
0.9
–200
50
1.0
1.1
200 –200
150 50
0.9
1.0
1.1
200
150
nA
ns
V
100
100
Over-Current Threshold
COMP to CS Offset
1.42 1.55 1.68 1.42 1.55 1.68
0.45 0.90 1.35 0.45 0.90 1.35
CS=0V
V
3
TI [ TEXAS INSTRUMENTS ]
