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NCL30086 Datasheet, PDF (8/28 Pages) ON Semiconductor – Controller for LED Lighting
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NCL30086
Table 4. ELECTRICAL CHARACTERISTICS (Unless otherwise noted: For typical values TJ = 25°C, VCC = 12 V, VZCD = 0 V,
VCS = 0 V, VSD = 1.5 V) For min/max values TJ = −40°C to +125°C, VCC = 12 V)
Description
Test Condition
Symbol
Min Typ Max Unit
FAULT PROTECTION
VTF(stop) over IOTP(REF) ratio (Note 7)
VOTP(off) over IOTP(REF) ratio (Note 7)
VOTP(on) over IOTP(REF) ratio (Note 7)
VREFX @ VSD = 600 mV (as percentage of VREF)
TJ = +25°C to +125°C
TJ = +25°C to +125°C
TJ = +25°C to +125°C
SD pin falling (no OTP
detection)
RTF(stop)
7.4 8.1 8.8
kW
ROTP(off)
5.4 5.9 6.4
kW
ROTP(on)
7.5 8.1 8.7
kW
VREF(50)
40
50
60
%
BROWN−OUT
Brown−Out ON level (IC start pulsing)
Brown−Out OFF level (IC shuts down)
BO comparators delay
Brown−Out blanking time
VS pin Pulling−down Current
DIMMING SECTION
VS rising
VS falling
VS = VBO(on)
VBO(on)
0.95 1.00 1.05
V
VBO(off)
0.85 0.90 0.95
V
tBO(delay)
30
ms
tBO(blank)
15
25
35
ms
IBO(bias)
50 250 450
nA
DIM pin voltage for zero output current
(OFF voltage)
VDIM falling
VDIM0
0.66 0.70 0.74
V
DIM pin voltage for maximum output current
(VREFX = VREF)
VDIM rising
VDIM100
−
2.45 2.60
V
DIM pin voltage for 50% output current
(VREFX = 125 mV)
VDIM rising or falling
VDIM50
1.35 1.57 1.75
V
Dimming range
VDIM(range)
1.75
V
Dimming pin pull−up current source
IDIM(pullup)
7.5
9.6
12
mA
6. Guaranteed by Design
7. A NTC is generally placed between the SD and GND pins. Parameters RTF(start), RTF(stop), ROTP(off) and ROTP(on) give the resistance the
NTC must exhibit to respectively, enter thermal foldback, stop thermal foldback, trigger the OTP limit and allow the circuit recovery after
an OTP situation.
8. At startup, when VCC reaches VCC(on), the controller blanks OTP for more than 250 ms to avoid detecting an OTP fault by allowing the
SD pin voltage to reach its nominal value if a filtering capacitor is connected to the SD pin.
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