UCC2817, UCC2818, UCC3817, UCC3818
BiCMOS POWER FACTOR PREREGULATOR
SLUS395J - FEBRUARY 2000 - REVISED MARCH 2009
electrical characteristics
, T
A
= 0°C to 70°C for the UCC3817 and T
A
= −40°C to 85°C for the UCC2817, T
A
= T
J,
VCC = 12 V, R
T
= 22 kΩ, C
T
= 270 pF, (unless otherwise noted)
voltage reference section
PARAMETER
Input voltage
Load regulation
Line regulation
Short-circuit current
TA = 0°C to 70°C
TA = −40°C to 85°C
IREF = 1 mA to 2 mA
VCC = 10.8 V to 15 V,
See Note 2
TEST CONDITIONS
MIN
7.387
7.369
0
0
−20
−25
TYP
7.5
7.5
MAX
7.613
7.631
10
10
−50
UNITS
V
V
mV
mV
mA
VREF = 0 V
NOTES: 2. Reference variation for VCC < 10.8 V is shown in Figure 8.
oscillator section
PARAMETER
Initial accuracy
Voltage stability
Total variation
Ramp peak voltage
Ramp amplitude voltage
(peak to peak)
TEST CONDITIONS
TA = 25°C
VCC = 10.8 V to 15 V
Line, temp
MIN
85
−1
80
4.5
3.5
5
4
TYP
100
MAX
115
1
120
5.5
4.5
UNITS
kHz
%
kHz
V
V
peak current limit section
PARAMETER
PKLMT reference voltage
PKLMT propagation delay
TEST CONDITIONS
MIN
−15
150
350
TYP
MAX
15
500
UNITS
mV
ns
multiplier section
PARAMETER
IMOUT, high line, low power output
current, (0°C to 85°C)
IMOUT, high line, low power output
current, (−40°C to 85°C)
IMOUT, high line, high power output
current
IMOUT, low line, low power output
current
IMOUT, low line, high power output
current
IMOUT, IAC limited output current
Gain constant (K)
IMOUT, zero current
IMOUT, zero current, (0°C to 85°C)
IMOUT, zero current, (−40°C to 85°C)
Power limit (IMOUT x VFF)
TEST CONDITIONS
IAC = 500
µA,
IAC = 500
µA,
IAC = 500
µA,
IAC = 150
µA,
IAC = 150
µA,
IAC = 150
µA,
IAC = 300
µA,
IAC = 150
µA,
IAC = 500
µA,
IAC = 500
µA,
IAC = 500
µA,
IAC = 150
µA,
VFF = 4.7 V,
VFF = 4.7 V,
VFF = 4.7 V,
VFF = 1.4 V,
VFF = 1.4 V,
VFF = 1.3 V,
VFF = 3 V,
VFF = 1.4 V,
VFF = 4.7 V,
VFF = 4.7 V,
VFF = 4.7 V,
VFF = 1.4 V,
VAOUT = 1.25 V
VAOUT = 1.25 V
VAOUT = 5 V
VAOUT = 1.25 V
VAOUT = 5 V
VAOUT = 5 V
VAOUT = 2.5 V
VAOUT = 0.25 V
VAOUT = 0.25 V
VAOUT = 0.5 V
VAOUT = 0.5 V
VAOUT = 5 V
−375
MIN
0
0
−70
−10
−268
−250
0.5
TYP
−6
−6
−90
−19
−300
−300
1
0
0
0
0
−420
MAX
−20
−23
−105
−50
−345
−400
1.5
−2
−2
−3
−3.5
−485
UNITS
µA
µA
µA
µA
µA
µA
1/V
µA
µA
µA
µA
µW
4
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