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UCC2800 Datasheet(PDF) 3 Page - Texas Instruments

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Part # UCC2800
Description  Low-Power BiCMOS Current-Mode PWM
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

UCC2800 Datasheet(HTML) 3 Page - Texas Instruments

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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
4.925
5.00
5.075 4.925
5.00
5.075
V
TJ=+25°C, I=0.2mA, UCCx803/5
3.94
4.00
4.06
3.94
4.00
4.06
Load Regulation
0.2mA<I<5mA
10
30
10
25
mV
Line Regulation
TJ=+25°C,
VCC=10V to Clamp (IVCC=25mA)
1.9
1.9
mV/V
TJ=–55°C to +125°C,
VCC=10V to Clamp (IVCC=25mA)
2.5
2.1
mV/V
Total Variation
UCCx800/1/2/4 (Note 7)
4.88
5.00
5.10
4.88
5.00
5.10
V
UCCx803/5 (Note 7)
3.90
4.00
4.08
3.90
4.00
4.08
V
Output Noise Voltage
10Hz
≤ f ≤ 10kHz, TJ=+25°C (Note 9)
130
130
µV
Long Term Stability
TA=+125°C, 1000 Hours (Note 9)
5
5
mV
Output Short Circuit
–5
–35
–5
–35
mA
Oscillator Section
Oscillator Frequency
UCCx800/1/2/4 (Note 4)
40
46
52
40
46
52
kHz
UCCx803/5 (Note 4)
26
31
36
26
31
36
kHz
Temperature Stability
(Note 9)
2.5
2.5
%
Amplitude peak-to-peak
2.25
2.40
2.55
2.25
2.40
2.55
V
Oscillator Peak Voltage
2.45
2.45
V
Error Amplifier Section
Input Voltage
COMP=2.5V; UCCx800/1/2/4
2.44
2.50
2.56
2.44
2.50
2.56
V
COMP=2.0V; UCCx803/5
1.95
2.0
2.05
1.95
2.0
2.05
Input Bias Current
11
11
µA
Open Loop Voltage Gain
60
80
60
80
dB
COMP Sink Current
FB=2.7V, COMP=1.1V
0.3
3.5
0.4
2.5
mA
COMP Source Current
FB=1.8V, COMP=REF–1.2V
–0.2
–0.5
–0.8
–0.2
–0.5
–0.8
mA
Gain Bandwidth Product
(Note 9)
2
2
MHz
PWM Section
Maximum Duty Cycle
UCCx800/2/3
97
99
100
97
99
100
%
UCCx801/4/5
48
49
50
48
49
50
Minimum Duty Cycle
COMP=0V
0
0
%
Current Sense Section
Gain
(Note 5)
1.10
1.65
1.80
1.10
1.65
1.80
V/V
Maximum Input Signal
COMP=5V (Note 6)
0.9
1.0
1.1
0.9
1.0
1.1
V
Input Bias Current
200
200
200
200
nA
CS Blank Time
50
100
150
50
100
150
ns
Over-Current Threshold
1.42
1.55
1.68
1.42
1.55
1.68
V
COMP to CS Offset
CS=0V
0.45
0.90
1.35
0.45
0.90
1.35
V


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