CAT3661 Datasheet, PDF (4/12 Pages) ON Semiconductor – 1-Channel Low-Power LED Driver

CAT3661
TYPICAL CHARACTERISTICS
(V_IN = 3 V, I_LED = 3 mA, V_F = 3 V, T_AMB = 25°C, typical application circuit unless otherwise specified.)
220
200
2x
180
1.33x
160 ^1x
1.5x
140
120
3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0
INPUT VOLTAGE (V)
Figure 2. Quiescent Current vs. Input Voltage
6.5
2x
6.0
5.5
5.0
1.5x
4.5
1.33x
4.0
3.5
1x
3.0
3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0
INPUT VOLTAGE (V)
Figure 3. Total Supply Current vs. Input
Voltage
7
8
6 mA
6
5
6
4
3 mA
4
3
2
1
0
0
50
100
150
200
250
300
LED PIN VOLTAGE (mV)
Figure 4. LED Current vs. LED Pin Voltage
2
0
10
100
RSET RESISTANCE (kW)
Figure 5. LED Current vs. RSET
1.4
1.2
25°C
1.0
−40°C
0.8
85°C
0.6
0.4
0.2
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
Figure 6. Enable Voltage vs. Input Voltage
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