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UCC28502 Datasheet(PDF) 3 Page - Texas Instruments

Part # UCC28502
Description  BiCMOS PFC/PWM COMBINATION CONTROLLER
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

UCC28502 Datasheet(HTML) 3 Page - Texas Instruments

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UCC28500, UCC28501, UCC28502, UCC28503
UCC38500, UCC38501, UCC38502, UCC38503
SLUS419C − AUGUST 1999 − REVISED NOVEMBER 2001
3
www.ti.com
electrical characteristics TA = 0°C to 70°C for the UCC3850X, –40°C to 85°C for the UCC2850X,
TA = TJ, VCC = 12 V, RT = 22 kΩ, CT = 330 pF (unless otherwise noted)
supply current
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Supply current, off
VCC turn-on threshold –300 mV
150
300
µA
Supply current, on
VCC = 12 V (no load on GT1 or GT2)
4
6
mA
undervoltage lockout
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
VCC turn-on threshold (UCCx8500/502)
15.4
16
16.6
V
UVLO hysteresis (UCCx8500/502)
5.8
6.3
V
Shunt voltage (UCCx8500/502)
IVCC = 10 mA
15.4
16.2
17.0
V
VCC turn-on threshold (UCCx8501/503)
9.7
10.2
10.8
V
VCC turn-off threshold
9.4
9.7
V
UVLO hysteresis (UCCx8501/503)
0.3
0.5
V
voltage amplifier
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Input voltage
0
°C ≤ TA ≤ 70°C
7.387
7.500
7.613
V
Input voltage
–40
°C ≤ TA ≤ 85°C
7.35
7.50
7.65
V
VSENSE bias current
50
200
nA
Open loop gain
VAOUT = 2 V to 5 V
50
90
dB
High-level output voltage
ILOAD = –150 µA
5.3
5.5
5.6
V
Low-level output voltage
ILOAD = 150 µA
0.00
0.05
0.15
V
PFC overvoltage protection and enable
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Over voltage reference
VREF
+ 0.480
VREF
+ 0.500
VREF
+ 0.520
V
Hysteresis
300
500
600
mV
Enable threshold
1.7
1.9
2.1
V
Enable hysteresis
0.1
0.2
0.3
V
current amplifier
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Input offset voltage
VCM = 0 V,
VCAOUT = 3 V
–6
0
6
mV
Input bias current
VCM = 0 V,
VCAOUT = 3 V
−50
−100
nA
Input offset current
VCM = 0 V,
VCAOUT = 3 V
25
100
nA
Open loop gain
VCM = 0 V,
VCAOUT = 2 V to 5 V
90
dB
Common−mode rejection ratio
VCM = 0 V to 1.5 V, VCAOUT = 3 V
90
dB
High-level output voltage
ILOAD = –120 µA
5.6
7.0
7.5
V
Low-level output voltage
ILOAD = 1 mA
0.1
0.2
0.5
V
Gain bandwidth product
See Note 1
2.5
MHz
NOTES:
1. Ensured by design. Not production tested.
2. See Figure 6 for reference variation.
3. See Figure 5 for reference variation for VCC < 10.8 V.


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