cat4002a ON Semiconductor, cat4002a Datasheet - Page 4

• Manufacturer Part Number: cat4002a
• Description: Constant Current Led Driver With 32 Dimming Levels And Rset
• Manufacturer: ON Semiconductor

−0.2
−0.4
−0.6
−0.8
−1.0
2.0
1.6
1.2
0.8
0.4
1.0
0.8
0.6
0.4
0.2
1.4
1.2
1.0
0.8
0.6
0.4
0
0
2.5
2.0
0
(CAT4002A, V
Figure 3. Quiescent Current vs. RSET Input
Figure 7. EN/DIM High Threshold vs. Input
Figure 5. LED Current Change vs. Input
2.5
3.0
IN
3.0
= 4 V, V
3.5
20
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
25°C
RSET (kW)
3.5
Voltage
Voltage
Voltage
F
= 3.3 V, I
4.0
−40°C
TYPICAL PERFORMANCE CHARACTERISTICS
80°C
4.0
OUT
4.5
40
4.5
= 50 mA (2 LEDs at 25 mA), C
5.0
5.0
http://onsemi.com
5.5
5.5
60
4
−10
1.4
1.2
1.0
0.8
0.6
10
−2
−4
−6
−8
40
30
20
10
8
6
4
2
0
0
−40
IN
2.5
1
Figure 4. Quiescent Current vs. Input Voltage
= 1 mF, T
Figure 8. LED Current vs. RSET Resistor
3.0
Figure 6. LED Current Change vs.
AMB
0
= 25°C unless otherwise specified.)
3.5
TEMPERATURE (°C)
INPUT VOLTAGE (V)
Temperature
(Full Load)
RSET (kW)
4.0
10
40
4.5
80
5.0
100
120
5.5