CAT4139 Datasheet, PDF (3/13 Pages) Catalyst Semiconductor – 22V High Current Boost White LED Driver

CAT4139
TYPICAL CHARACTERISTICS
V_IN = 5.0V, I_OUT = 180mA, T_AMB = 25ºC, with 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
290
80 100 120 140 160 180 200
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-5032 Rev. A