NSI50150ADT4G Datasheet, PDF (4/9 Pages) ON Semiconductor – Adjustable Constant Current Regulator & LED Driver

NSI50150ADT4G
TYPICAL PERFORMANCE CURVES
(Minimum FR−4 @ 1000 mm², 3 oz. Copper Trace, Still Air)
200
175
150
125
100
75
50
25
0
−25
−10
0
T_A = 25°C, R_adj = Open
10
20
30
40
50
60
Vak, ANODE−CATHODE VOLTAGE (V)
Figure 1. General Performance Curve for CCR
180
160
140
120
100
80
T_A = 25°C
R_adj = Open
60
Non−Repetitive Pulse Test
40
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)
180
T_A = −40°C
160
T_A = 25°C
140
120 ^{TA = 85°C}
100
≈−0.118 mA/°C typ
≈−0.153 mA/°C typ
≈−0.174 mA/°C typ
80
60
T_A = 125°C
40
T_J, maximum die temperature limit 175°C
20
0
DC Test Steady State, Still Air, R_adj = Open
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)
170
Vak @ 7.5 V
165 _{TA = 25°C}
160 ^{Radj = Open}
155
150
145
140
135
130
140
145 150 155 160 165 170 175 180
I_reg(P), PULSE CURRENT (mA)
Figure 4. Steady State Current vs. Pulse
Current Testing
156
155
154
153
152
151
150
149
148
0
Vak @ 7.5 V
T_A = 25°C
R_adj = Open
20 40 60 80 100 120 140 160 180 200
TIME (s)
Figure 5. Current Regulation vs. Time
350
300
250
200
150
1
Vak @ 7.5 V
T_A = 25°C
10
100
R_adj (W), Max Power 1 W
Figure 6. I_reg(SS) vs. R_adj
1000
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