NCP1015
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (For typical values T
J
=25°C, for min/max values T
J
=−40°Cto125°C, V
CC
=8V unless otherwise noted)
Symbol
Rating Pin Min Typ Max Unit
SUPPLY SECTION AND V
CC
MANAGEMENT
V
CC(off)
V
CC
increasing level at which the current source turns−off 1 7.9 8.5 9.1 V
V
CC(on)
V
CC
decreasing level at which the current source turns−on 1 6.9 7.5 8.1 V
V
CCLATCH
Decreasing level at which the Latch−off phase Ends 1 4.4 4.7 5.1 V
DV
CC
Hysteresis between V
CC(off)
1 − 1.0 −
ICC1 Internal IC consumption, MOSFET switching at 65 kHz 1 − 0.92 1.1 mA
ICC1 Internal IC consumption, MOSFET switching at 100 kHz 1 − 0.95 1.15 mA
V
clamp
Active zener voltage positive offset to V
CC(off)
1 140 200 300 mV
POWER SWITCH CIRCUIT
R
DS(on)
Power Switch Circuit on−state resistance (Id = 50 mA)
T
J
= 25°C
T
J
= 125°C
5
5
−
−
11
−
19
24
W
V
dsb
Power Switch Circuit & Startup breakdown voltage
(I
DS(off)
= 100 mA, T
J
= 25°C)
5 700 − − V
I
DS(off)
Power Switch & Startup breakdown voltage off−state leakage current
T
J
= −40°C (Vds = 650 V)
T
J
= 25°C (Vds = 700 V)
T
J
= 125°C (Vds = 700 V)
5
5
5
−
−
−
70
50
30
120
−
−
mA
t
on
t
off
Switching characteristics (R
L
= 50 W, Vds set for Ids = 0.7 x Ids
lim
)
Turn−on time (90% − 10%)
Turn−off time (10% − 90%)
5
5
−
−
20
10
−
−
ns
INTERNAL START−UP CURRENT SOURCE
IC1
High−voltage current source, V
CC
= 8 V 0°C < T
J
< 125°C
−40°C < T
J
< 125°C
1 5.0
5.0
8.0
8.0
10
11
mA
IC2 High−voltage current source, V
CC
= 0 1 − 10 − mA
CURRENT COMPARATOR T
J
= 255C (Note 2)
I
peak
Maximum internal current set−point 5 405 450 495 mA
I
Lskip
Default internal current set−point for skip cycle operation,
percentage Ipeak
max
− − 25 − %
t
DEL
Propagation delay from current detection to drain OFF state − − 125 − ns
t
LEB
Leading Edge Blanking Duration − − 250 − ns
INTERNAL OSCILLATOR
f
OSC
Oscillation frequency, 65 kHz version, T
J
= 25°C (Note 2) 59 65 71 kHz
f
OSC
Oscillation frequency, 100 kHz version, T
J
= 25°C (Note 2) 90 100 110 kHz
f
dither
Frequency dithering compared to switching frequency (with active DSS) − ±3.3 − %
D
max
Maximum Duty−cycle 62 67 72 %
FEEDBACK SECTION
R
up
Internal pull−up resistor 4 − 18 −
kW
t
ss
Internal soft−start (guaranteed by design) − − 1.0 − ms
SKIP CYCLE GENERATION
V
skip
Default skip mode level on FB pin 4 0.5 V
TEMPERATURE MANAGEMENT
TSD
Temperature shutdown 150 °C
Hysteresis in shutdown 50 °C
2. See characterization curves for temperature evolution
