SC606 Datasheet, PDF (12/18 Pages) Semtech Corporation – Low Noise Smart LED Driver with Serial Interface

SC606
POWER MANAGEMENT
Typical Characteristics
Efficiency for 6 LEDs at 20mA and 3.31V
100
90
80
T_A = 25°C
70
60
50
4.2
4
3.8
3.6
3.4
3.2
Input Voltage [V]
Ripple in 1x Mode for 6 LEDs at 20mA
Efficiency for 6 LEDs at 10mA and 3.31V
100
90
80
T_A = 25°C
70
60
50
4.2
4
3.8
3.6
3.4
3.2
Input Voltage [V]
Startup
Ch1 1V/DIV
Ch2 1V/DIV
Ch3 5V/DIV
Ch4 500mA/DIV
100 us/DIV
Ch1 50mV/DIV
Ch2 50mV/DIV
Ch3 2V/DIV
Ch4 100mA/DIV
400 ns/DIV
1.33MHz Ripple in 1.5x Mode for 6 LEDs at 20mA 250kHz Ripple in 1.5x Mode for 6 LEDs at 20mA
Ch1 50mV/DIV
Ch2 50mV/DIV
Ch3 2V/DIV
Ch4 100mA/DIV
400 ns/DIV
© 2005 Semtech Corp.
12
Ch1 50mV/DIV
Ch2 50mV/DIV
Ch3 2V/DIV
Ch4 100mA/DIV
2 us/DIV
www.semtech.com