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Table 4. ELECTRICAL CHARACTERISTICS
(For typical values T
= 25°C, for min/max values T
J
Symbol
CURRENT COMPARATOR
I
Final switch current with a primary slope of 200 mA/ms,
IPKSW
F
= 60 kHz (Note 3), LIM/OPP pin open
SW
NCP1060
NCP1063
I
Final switch current with a primary slope of 200 mA/ms,
IPKSW
F
= 100 kHz (Note 3), LIM/OPP pin open
SW
NCP1060
NCP1063
I
Maximum internal current setpoint at beginning of switching cycle
LMDEC
FB = 2 V, LIM/OPP = −285 mA, Tj = 25°C
NCP1060
NCP1063
t
Soft−start duration (guaranteed by design)
SS
t
Propagation delay from current detection to drain OFF state
prop
t
Leading Edge Blanking Duration
LEB
NCP1060
NCP1063
INTERNAL OSCILLATOR
f
Oscillation frequency, 60 kHz version, Tj = 25°C (Note 4)
OSC
f
Oscillation frequency, 100 kHz version, Tj = 25°C (Note 4)
OSC
f
Frequency jittering in percentage of f
jitter
f
Jittering swing frequency
swing
D
Maximum duty−cycle
max
ERROR AMPLIFIER SECTION
V
Voltage Feedback Input (V
REF
I
Input Bias Current (V
FB
G
Transconductance
M
I
OTA maximum current capability (V
OTAlim
V
FB voltage to disable OTA
OTAen
COMPENSATION SECTION
I
COMP current for which Fault is detected
COMPfault
I
COMP current for which internal current set−point is 100% (I
COMP100%
I
COMP current for which internal current setpoint is:
COMPfreeze
I
(NCP1060/3)
Freeze1 or 2
V
Equivalent pull−up voltage in linear regulation range
COMP(REF)
(Guaranteed by design)
R
Equivalent feedback resistor in linear regulation range
COMP(up)
(Guaranteed by design)
V
Voltage on LIM/OPP pin @ I
LMOP
Voltage on LIM/OPP pin @ I
I
Maximum current from LIM/OPP pin
LMOP
I
Current at which LIM/OPP starts to decrease I
LMOP(min)
I
Current at which LIM/OPP stops to decrease I
LMOP(max)
I
Negative Active Clamp Voltage (I
LMOP(neg)
3. The final switch current is: I
IPK(0)
L
the primary inductor in a flyback, and t
P
4. Oscillator frequency is measured with disabled jittering.
NCP1060, NCV1060, NCP1063, NCV1063
= −40°C to +125°C, V
J
Rating
OSC
= 2.5 V)
COMP
= 3.3 V)
FB
> V
)
FB
OTAen
= −35 mA
LMOP
= −250 mA, Tj = 25°C
LMOP
PEAK
PEAK
= −2.5 mA)
LMOP
/ (V
/L
+ S
) x V
/L
+ V
/L
in
P
a
in
P
in
P
the propagation delay.
prop
www.onsemi.com
= 14 V unless otherwise noted)
CC
Pin
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
4 (7)
4 (7)
5 (8)
5 (8)
4 (7)
5 (8)
)
5 (8)
IPK(0)
5 (8)
5 (8)
5 (8)
3 (6)
3 (6)
3 (6)
3 (6)
3 (6)
x t
, with S
the built−in slope compensation, Vin the input voltage,
prop
a
8
Min
Typ
Max
Unit
−
330
−
−
740
−
−
320
−
−
710
−
−
128
−
−
312
−
−
4
−
−
70
−
−
130
−
−
160
−
54
60
66
kHz
90
100
110
kHz
±6
−
−
−
300
−
62
66
72
3.2
3.3
3.4
−
1
−
2
±150
0.7
1.3
1.7
−
−40
−
−
−44
−
−
−80
−
−
2.7
−
−
17.7
−
1.40
1.50
1.60
1.28
1.35
1.42
−330
−420
−20
−26
−32
−285
−0.7
mA
mA
mA
ms
ns
ns
%
Hz
%
V
mA
mS
mA
V
mA
mA
mA
V
kΩ
V
mA
mA
mA
V
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