CAT4240 Datasheet, PDF (3/14 Pages) Catalyst Semiconductor – 6 Watt Boost LED Driver

CAT4240
TYPICAL CHARACTERISTICS
VIN = 5V, V_L = 13V, T_AMB = 25ºC, typical application circuit unless otherwise specified.
Quiescent Current vs. VIN (Not Switching)
Quiescent Current vs. VIN (Switching)
200
2.0
V_FB = 0.4V
1.5
150
1.0
100
0.5
50
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
FB pin voltage vs. Temperature
303
302
301
300
299
298
297
-50
0
50 100 150
TEMPERATURE [ºC]
Switching Frequency vs. Supply Voltage
1.2
0.0
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
FB Pin Voltage vs. Output Current
310
305
300
295
4 LEDs
290
0
50 100 150 200
OUTPUT CURRENT [mA]
Switch ON Resistance vs. Input Voltage
2.0
1.1
1.5
1.0
1.0
0.9
0.5
0.8
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
0.0
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
© Catalyst Semiconductor, Inc.
3
Characteristics subject to change without notice
Doc. No. MD-5026 Rev. B