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UC2872 Fiches technique(PDF) 3 Page - Texas Instruments

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No de pièce UC2872
Description  Resonant Lamp Ballast Controller
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

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3
UC1872
UC2872
UC3872
ELECTRICAL CHARACTERISTICS: Unless otherwise stated, these parameters apply for TJ =
−55° C to +125°C for the
UC1872, –40
° C to +85° C for the UC2872, −0°C to +70°C for the UC3872; VCC= 5V, VC = 15V, VENBL = 5V, CT = 1nF, ZD = 1V.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Error Amp Section (cont.)
Output Low
VINV = 1.7V
0.1
0.2
V
Output Source Current
VINV = 1.3V, VO = 2V
–350
–500
µA
Output Sink Current
VINV = 1.7V, VO = 2V
10
20
mA
Common Mode Range
0VIN-1V
V
Unity Gain Bandwidth
TJ = 25° C (Note 4)
1
MHz
Open Lamp Detect Section
Soft Start Threshold
VINV = 0V
2.9
3.4
3.8
V
Open Lamp Detect Threshold
VSS = 4.2V
0.6
1.0
1.4
V
Soft Start Current
VSS = 2V
10
20
40
µA
Output Section
Output Low Level
IOUT = 0, Outputs A and B
0.05
0.2
V
IOUT = 10mA
0.1
0.4
V
IOUT = 100mA
1.5
2.2
V
Output High Level
IOUT = 0, Output C
13.9
14.9
V
IOUT = −10mA
13.5
14.3
V
IOUT = −100mA
12.5
13.5
V
Rise Time
TJ = 25° C, Cl = 1nF (Note 4)
30
80
ns
Fall Time
TJ = 25° C, Cl = 1nF (Note 4)
30
80
ns
Output Dynamics
Out A and B Duty Cycle
48
49.9
50
%
Out C Max Duty Cycle
VINV = 1V
100
%
Out C Min Duty Cycle
VINV = 2V
0
%
Under Voltage Lockout Section
Startup Threshold Voltage
3.7
4.2
4.5
V
Hysteresis
120
200
280
mV
Enable Section
Input High Threshold
2V
Input Low Threshold
0.8
V
Input Current
VENBL = 5V
150
400
µA
Supply Current Section
VCC Supply Current
VCC = 24V
6
14
mA
VC Supply Current
VC = 24V
5
12
mA
ICC Disabled
VCC = 24V, VENBL = 0V
1
10
µA
Note 3: Unless otherwise specified, all voltages are with respect to ground. Currents are positive into, and negative out of the
specified terminal.
Note 4: Guaranteed by design. Not 100% tested in production.


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