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UCC3817ADRG4 Datasheet(PDF) 5 Page - Texas Instruments

Part # UCC3817ADRG4
Description  BiCMOS POWER FACTOR PREREGULATOR
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

UCC3817ADRG4 Datasheet(HTML) 5 Page - Texas Instruments

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UCC2817A, UCC2818A
UCC3817A, UCC3818A
SLUS577B − SEPTEMBER, 2003 − REVISED FEBRUARY 2006
5
www.ti.com
ELECTRICAL CHARACTERISTICS
TA = 0°C to 70°C for the UCC3817A and TA = −40°C to 85°C for the UCC2817A, TA = TJ, VCC = 12 V, RT = 22 kΩ,
CT = 270 pF, (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Multiplier Section
IMOUT, high line, low power output
current, (0
°C to 85°C)
IAC = 500 µA,
VFF = 4.7 V,
VAOUT = 1.25 V
0
−6
−20
IMOUT, high line, low power output
current, (−40
°C to 85°C)
IAC = 500 µA,
VFF = 4.7 V,
VAOUT = 1.25 V
0
−6
−23
IMOUT, high line, high power output
current
IAC = 500 µA,
VFF = 4.7 V,
VAOUT = 5 V
−70
−90
−105
µA
IMOUT, low line, low power output
current
IAC = 150 µA,
VFF = 1.4 V,
VAOUT = 1.25 V
−10
−19
−50
µA
IMOUT, low line, high power output
current
IAC = 150 µA,
VFF = 1.4 V,
VAOUT = 5 V
−268
−300
−345
IMOUT, IAC limited output current
IAC = 150 µA,
VFF = 1.3 V,
VAOUT = 5 V
−250
−300
−400
Gain constant (K)
IAC = 300 µA,
VFF = 3 V,
VAOUT = 2.5 V
0.5
1
1.5
1/V
IMOUT, zero current
IAC = 150 µA,
VFF = 1.4 V,
VAOUT = 0.25 V
0
−2
IMOUT, zero current
IAC = 500 µA,
VFF = 4.7 V,
VAOUT = 0.25 V
0
−2
A
IMOUT, zero current, (0°C to 85°C)
IAC = 500 µA,
VFF = 4.7 V,
VAOUT = 0.5 V
0
−3
µA
IMOUT, zero current, (−40°C to 85°C)
IAC = 500 µA,
VFF = 4.7 V,
VAOUT = 0.5 V
0
−3.5
Power limit (IMOUT x VFF)
IAC = 150 µA,
VFF = 1.4 V,
VAOUT = 5 V
−375
−420
−485
µW
Feed-Forward Section
VFF output current
IAC = 300 µA
−140
−150
−160
µA
Soft Start Section
SS charge current
−6
−10
−16
µA
Gate Driver Section
Pullup resistance
IO = –100 mA to −200 mA
9
12
Pulldown resistance
IO = 100 mA
4
10
Output rise time
CL = 1 nF,
RL = 10 Ω,
VDRVOUT = 0.7 V to 9.0 V
25
50
ns
Output fall time
CL = 1 nF,
RL = 10 Ω,
VDRVOUT = 9.0 V to 0.7 V
10
50
ns
Maximum duty cycle
93%
95%
99%
Minimum controlled duty cycle
At 100 kHz
2%
Zero Power Section
Zero power comparator threshold
Measured on VAOUT
0.20
0.33
0.50
V


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