ON Semiconductor NCP1060, Manual

Page: 8 / 31

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