ncp1282 ON Semiconductor, ncp1282 Datasheet - Page 7

• Manufacturer Part Number: ncp1282
• Description: High-performance Active Clamp/reset Pwm Controller Featuring Hv Start-up
• Manufacturer: ON Semiconductor

5. Guaranteed by design only.
ELECTRICAL CHARACTERISTICS
V
R
125°C, unless otherwise noted.)
SYNCHRONIZATION
SOFT-START/STOP
OUTPUTS
PWM COMPARATOR
Output Pulse Width
Output Voltage High (R
Sync Threshold Voltage (Note 5)
Sync Input Pulse Width (V
Maximum Sync Frequency (Note 5)
Source Current (Note 5)
Charge Current (V
Discharge Current (V
Soft-Stop Reset Voltage (V
Overlap Time Delay (Tested at 50% of Waveform)
Output Voltage (I
Drive Resistance (FT ONLY)
Rise Time (10% to 90%, C
Fall Time (90% to 10%, C
Input Resistance
Lower Input Threshold
Delay to Output (From V
CS
D
R
Low State
High State
OUT1 Sink (V
OUT1 Source (V
OUT2 Sink (V
OUT2 Source (V
OUT1
OUT2
OUT1
OUT2
= 25 kW, R
D
= 0 V, V
Leading
Trailing
T
T
T
T
T
T
T
T
= 25 kW
J
J
J
J
J
J
J
J
= 25°C
= –40°C to 125°C
= 25°C
= –40°C to 125°C
= 25°C
= –40°C to 125°C
= 25°C
= –40°C to 125°C
SS
SYNC
= open, R
RTCT
RTCT
OUT
SS
RTCT
RTCT
= 5.0 kW, C
UVOV
= 0 mA, Note 5)
= 1.6 V)
= 4.0 V, V
= 4.0 V, V
SYNC
OH
= 2.5 V, V
= 2.5 V, V
T
out1
SYNC
out1
= 13.7 kW, C
= 0 V, V
FF
to 0.5 V
= R)
Characteristic
= 2200 pF, C
= 0 V)
= 2200 pF, C
REF
out1
out2
= 3.5 V)
out1
out2
SS
= 0.1 mF, R
OH
= 1 V)
= 1 V)
= 1.6 V)
= 11 V)
= 11 V)
)
AUX
(continued) (V
out2
out2
= 10 mF, C
FF
= 220 pF)
= 220 pF)
= 29.4 kW, C
T
= 470 pF, C
in
http://onsemi.com
= 48 V, V
FF
NCP1282
= 470 pF. For typical values T
out1
AUX
7
= C
= 12 V, V
out2
V
V
t
t
Symbol
t
I
R
= 100 pF, C
D(leading)
D(trailing)
O(SYNC)
SYNC(D)
V
reset(SS)
R
R
R
R
H(SYNC)
V
t
f
I
I
IN(VEA)
t
SYNC
SYNC
SS(C)
SS(D)
V
V
UVOV
PWM
SYNC
SNK1
SRC1
SNK2
SRC2
EA(L)
t
t
t
t
OL
OH
r1
r2
f1
f2
= 2.3 V, V
UVOV
J
= 25°C, for min/max values, T
11.8
0.48
Min
= 0.01 mF, C
3.5
EA
70
15
70
37
72
11
–
-
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
= open, V
11.6
11.8
0.84
Typ
122
100
100
115
4.3
1.0
2.9
4.6
CSKIP
20
53
99
26
19
10
10
26
–
–
–
–
–
–
–
–
–
CSKIP
= 6800 pF,
= 0 V,
t
O(SYNC)min
Max
0.25
5.03
5.75
7.45
12.7
20.0
13.5
1.04
130
1.0
3.6
30
20
58
-
–
–
–
-
-
-
–
–
–
–
–
–
J
is – 40°C to
Unit
MHz
mA
mV
mA
mA
kW
ns
ns
ns
ns
ns
ns
W
V
V
V
V