CAT3644_0710 Datasheet, PDF (7/14 Pages) Catalyst Semiconductor – 4-Channel Ultra High Efficiency Quad-Mode™ LED Driver

CAT3644
TYPICAL PERFORMANCE CHARACTERISTICS
V_IN = 3.6V, I_OUT = 80mA (4 LEDs at 20mA), C_IN = C_OUT = C₁ = C₂ = 1μF, T_AMB = 25°C unless otherwise specified.
Foldback Current Limit
4.0
3.5
1x Mode
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
100 200 300 400
OUTPUT CURRENT [mA]
LED Current vs. LED Pin Voltage
40
30
20
10
0
0 50 100 150 200 250 300
LED PIN VOLTAGE [mV]
Dimming Waveform
LED Current vs. RSET
50
40
30
20
10
0
1
10
100
RSET RESISTANCE [kΩ]
© Catalyst Semiconductor, Inc.
7
Characteristics subject to change without notice
Doc. No. MD-5023, Rev. E