NSIC2050BT3G Datasheet, PDF (4/9 Pages) ON Semiconductor – Constant Current Regulator & LED Driver for A/C off-line Applications

NSIC2050BT3G
TYPICAL PERFORMANCE CURVES
(Minimum FR−4 @ 100 mm², 1 oz. Copper Trace, Still Air)
70
60
50
40
30
20
10
0
−10
−20
−20 0
T_A = 25°C
20 40 60 80 100 120 140
Vak, ANODE−CATHODE VOLTAGE (V)
Figure 1. General Performance Curve for CCR
65
60 ^{TA = 25°C}
55
70
60
T_A = −55°C
≈ −0.224 mA/°C
50
T_A = 25°C
T_A = 85°C
≈ −0.130 mA/°C
40
≈ −0.130 mA/°C
30
T_A = 125°C
T_J(max), maximum die temperature
20
limit 175°C (100 mm², 1 oz Cu)
10
DC Test Steady State, Still Air
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Vak, ANODE−CATHODE VOLTAGE (V)
Figure 2. Steady State Current (I_reg(SS)) vs.
Anode−Cathode Voltage (Vak)
58
56
Vak @ 7.5 V
T_A = 25°C
54
50
45
40
35
30
Non−Repetitive Pulse Test
25
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Vak, ANODE−CATHODE VOLTAGE (V)
Figure 3. Pulse Current (I_reg(P)) vs.
Anode−Cathode Voltage (Vak)
52
50
48
46
44
42
48 50 52 54 56 58 60 62 64 66 68
I_reg(P), PULSE CURRENT (mA)
Figure 4. Steady State Current vs. Pulse
Current Testing
58
57
Vak @ 7.5 V
T_A = 25°C
56
55
54
53
52
51
50
49
0 10 20 30 40 50 60 70 80
TIME (s)
Figure 5. Current Regulation vs. Time
3000
2500
2000
500 mm²/2 oz
500 mm²/1 oz
FR−4 Board
300 mm²/2 oz
1500
1000 ^{300 mm2/1 oz}
100 mm²/2 oz
500
100 mm²/1 oz
0
−40 −20 0
20 40 60 80 100 120
T_A, AMBIENT TEMPERATURE (°C)
Figure 6. Power Dissipation vs. Ambient
Temperature @ T_J = 1755C: Small Footprint
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