ZXSC380 Datasheet, PDF (3/10 Pages) Zetex Semiconductors – Single or multi cell LED driver solution

Typical characteristics
LED Current vs Supply Voltage for L = 100uH
80
70
60
50
40
30
20
10
0
0.5
1
1.5
2
2.5
3
Supply Voltage Vvcc (V)
ZXSC380
Ivcc vs Supply Voltage for L = 100uH
100
90
80
70
60
50
40
30
20
10
0
0.5
1
1.5
2
2.5
3
Supply Voltage Vvcc (V)
Efficiency vs Supply Voltgae for L = 100uH
100
90
80
70
60
50
40
30
20
10
0
0.5
1
1.5
2
2.5
3
Supply Voltage Vvcc (V)
Operating Waveforms
Channel 1 (lower): LED current ILed. 50mA/div.
Channel 2 (upper): Voltage at Vout pin. 1V/div
Issue 1 - March 2007
3
© Zetex Semiconductors plc 2007
www.zetex.com