NSI45020JZ_13 Datasheet, PDF (3/8 Pages) ON Semiconductor – Adjustable Constant Current Regulator & LED Driver

NSI45020JZ, NSV45020JZ
TYPICAL PERFORMANCE CURVES
Minimum FR−4 @ 300 mm², 2 oz Copper Trace, Still Air
50
25
40
30
20
10
0
−10
−20
−10 0
T_A = 25°C, R_adj = Open
10 20 30 40 50 60 70
Vak, ANODE−CATHODE VOLTAGE (V)
Figure 1. General Performance Curve for CCR
22
20
T_A = −40°C
−0.0302 mA/°C
−0.0290 mA/°C
15
−0.0278 mA/°C
T_A = 25°C
10
T_A = 85°C
T_A = 125°C
5
R_adj = Open
DC Test Steady State, Still Air
0
0 1 2 3 4 5 6 7 8 9 10
Vak, ANODE−CATHODE VOLTAGE (V)
Figure 2. Steady State Current (I_reg(SS)) vs.
Anode−Cathode Voltage (Vak)
24
23
21
22
T_A = 25°C
20
21
19
18
17
3.0
R_adj = Open
Non−Repetitive Pulse Test
4.0 5.0 6.0 7.0 8.0 9.0 10
Vak, ANODE−CATHODE VOLTAGE (V)
Figure 3. Pulse Current (I_reg(P)) vs.
Anode−Cathode Voltage (Vak)
20
19
Vak @ 7.5 V
18
T_A = 25°C
R_adj = Open
17
17
18
19
20
21
22
23
24
I_reg(P), PULSE CURRENT (mA)
Figure 4. Steady State Current vs. Pulse
Current Testing
22
40
Vak @ 7.5 V
Vak @ 7.5 V
T_A = 25°C
R_adj = Open
35
T_A = 25°C
21
30
25
20
20
19
15
0
5
10 15 20 25 30
35
1
TIME (s)
Figure 5. Current Regulation vs. Time
10
100
R_adj (W), MAX POWER 50 mW
Figure 6. I_reg(SS) vs. R_adj
1000
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