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