NCL30082 Просмотр технического описания (PDF) - ON Semiconductor
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NCL30082 Datasheet PDF : 35 Pages
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NCL30082
Table 3. ELECTRICAL CHARACTERISTICS (Unless otherwise noted: For typical values TJ = 25°C, VCC = 12 V;
For min/max values TJ = −40°C to +125°C, Max TJ = 150°C, VCC = 12 V)
Description
Test Condition
Symbol
Min Typ
Max Unit
VALLEY SELECTION
Valley thresholds
1st to 2nd valley transition at LL and 2nd to 3rd valley HL
2nd to 1st valley transition at LL and 3rd to 2nd valley HL
2nd to 4th valley transition at LL and 3rd to 5th valley HL
4th to 2nd valley transition at LL and 5th to 3rd valley HL
4th to 7th valley transition at LL and 5th to 8th valley HL
7th to 4th valley transition at LL and 8th to 5th valley HL
7th to 11th valley transition at LL and 8th to 12th valley HL
11th to 7th valley transition at LL and 12th to 8th valley HL
11th to 13th valley transition at LL and 12th to 15th valley HL
13th to 11th valley transition at LL and 15th to 12th valley HL
DIMMING SECTION
VREF decreases
VREF increases
VREF decreases
VREF increases
VREF decreases
VREF increases
VREF decreases
VREF increases
VREF decreases
VREF increases
mV
VVLY1−2/2−3
VVLY2−1/3−2
VVLY2−4/3−5
VVLY4−2/5−3
VVLY4−7/5−8
VVLY7−4/8−5
VVLY7−11/8−12
VVLY11−7/12−8
VVLY11−13/12−15
VVLY13−11/15−12
177.5
185.0
117.5
125.0
–
–
–
–
–
–
187.5
195.0
125.0
132.5
75.0
82.5
37.5
50.0
15.0
20.0
197.5
205.0
132.5
140.0
–
–
–
–
–
–
DIM pin voltage for zero output current (OFF voltage)
DIM pin voltage for maximum output current
Dimming range
Clamping voltage for DIM pin
Dimming pin pull−up current source
THERMAL FOLD−BACK AND OVP
VDIM(EN)
VDIM100
VDIM(range)
VDIM(CLP)
IDIM(pullup)
0.66 0.7 0.74 V
2.25 2.45 2.65 V
–
1.75
–
V
–
7.8
–
V
–
280
–
nA
Reference current for direct connection of an NTC (Note 6)
SD pin voltage at which thermal fold−back starts
SD pin voltage at which thermal fold−back stops
(Iout = 50% Iout(nom))
SD pin voltage at which thermal fold−back stops
NCL30082D (Iout = 25% Iout(nom))
Reference current for direct connection of an NTC
Fault detection level for OTP
Fault detection level for OTP NCL30082D
SD pin level at which controller re−start switching after OTP
detection
VSD decreasing
VSD increasing
IOTP(REF)
VTF(start)
VTF(stop)
VTF(stop)D
IOTP(REF)
VOTP(off)
VOTP(off)D
VOTP(on)
80
85
90
0.9
1
1.1
V
0.64 0.68 0.72 V
0.86 0.90 0.94 V
80
85
90 mA
0.47 0.5 0.53 V
0.81 0.85 0.89 V
0.64 0.68 0.72 V
SD pin level at which controller re−start switching after OTP
detection NCL30082D
VOTP(on)D
0.86 0.9 0.94
V
SD pin Over temperature Protection Hysteresis NCL30082D
VOTP(hys)D
15
50 100 mV
VTF(start) over IOTP(REF) ratio (Note 5)
TJ = +25°C to +125°C
RTF(start)
10.8 11.7 12.6 kW
VTF(stop) over IOTP(REF) ratio (Note 5)
TJ = +25°C to +125°C
RTF(stop)
7.4 8.0 8.6 kW
VOTP(off) over IOTP(REF) ratio (Note 5)
TJ = +25°C to +125°C
ROTP(off)
5.4 5.9 6.4 kW
VOTP(on) over IOTP(REF) ratio (Note 5)
TJ = +25°C to +125°C
ROTP(on)
7.4 8.0 8.6 kW
VTF(stop) over IOTP(REF) ratio NCL30082D (Note 5)
TJ = +25°C to +125°C RTF(stop)D
9.9 10.5 11.1 kW
VOTP(off) over IOTP(REF) ratio NCL30082D (Note 5)
TJ = +25°C to +125°C ROTP(off)D
9.4 10.0 10.6 kW
VOTP(on) over IOTP(REF) ratio NCL30082D (Note 5)
TJ = +25°C to +125°C ROTP(on)D
9.9 10.5 11.1 kW
5. 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.
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
6. Guaranteed by design.
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