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UCC1802L Datasheet(PDF) 4 Page - Texas Instruments

Part # UCC1802L
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

UCC1802L Datasheet(HTML) 4 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
Output Section
OUT Low Level
I=20mA, all parts
0.1
0.4
0.1
0.4
V
I=200mA, all parts
0.35
0.90
0.35
0.90
V
I=50mA, VCC=5V, UCCx803/5
0.15
0.40
0.15
0.40
V
I=20mA, VCC=0V, all parts
0.7
1.2
0.7
1.2
V
OUT High VSAT
(VCC-OUT)
I=–20mA, all parts
0.15
0.40
0.15
0.40
V
I=–200mA, all parts
1.0
1.9
1.0
1.9
V
I=–50mA,VCC=5V, UCCx803/5
0.4
0.9
0.4
0.9
V
Rise Time
CL=1nF
41
70
41
70
ns
Fall Time
CL=1nF
44
75
44
75
ns
Undervoltage Lockout Section
Start Threshold (Note 8)
UCCx800
6.6
7.2
7.8
6.6
7.2
7.8
V
UCCx801
8.6
9.4
10.2
8.6
9.4
10.2
V
UCCx802/4
11.5
12.5
13.5
11.5
12.5
13.5
V
UCCx803/5
3.7
4.1
4.5
3.7
4.1
4.5
V
Stop Threshold (Note 8)
UCCx1800
6.3
6.9
7.5
6.3
6.9
7.5
V
UCCx1801
6.8
7.4
8.0
6.8
7.4
8.0
V
UCCx802/4
7.6
8.3
9.0
7.6
8.3
9.0
V
UCCx803/5
3.2
3.6
4.0
3.2
3.6
4.0
V
Undervoltage Lockout Section (cont.)
Start to Stop Hysteresis
UCCx800
0.12
0.3
0.48
0.12
0.3
0.48
V
UCCx801
1.6
2
2.4
1.6
2
2.4
V
UCCx802/4
3.5
4.2
5.1
3.5
4.2
5.1
V
UCCx803/5
0.2
0.5
0.8
0.2
0.5
0.8
V
Soft Start Section
COMP Rise Time
FB=1.8V, Rise from 0.5V to REF–1V
4
10
4
10
ms
Overall Section
Start-up Current
VCC < Start Threshold
0.1
0.2
0.1
0.2
mA
Operating Supply Current
FB=0V, CS=0V
0.5
1.0
0.5
1.0
mA
VCC Internal Zener Voltage
ICC=10mA (Note 8), (Note 10)
12
13.5
15
12
13.5
15
V
VCC Internal Zener Voltage Minus
Start Threshold Voltage
UCCx802/4 (Note 8)
0.5
1.0
0.5
1.0
V
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.
Note 5: Gain is defined by:
A
V
V
VV
COMP
CS
CS
=≤
00 8
. .
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.


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