RT9379 RICHTEK [Richtek Technology Corporation], RT9379 Datasheet - Page 5

• Manufacturer Part Number: RT9379
• Description: 6 Channels 150mA x1/x1.5/x2 Charge Pump White LED Driver
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Typical Operating Characteristics
DS9379-01 April 2011
1.30
1.25
1.20
1.15
1.10
1.05
1.00
x1 Mode Quiescent Current vs. Input Voltage
100
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
0
1
0
2.8
2.8
2.8
Shutdown Current vs. Input Voltage
3
3
3
Efficiency vs. Input Voltage
3.2 3.4 3.6 3.8
3.2 3.4 3.6 3.8
3.2 3.4 3.6 3.8
Input Voltage (V)
Input Voltage (V)
Input Voltage (V)
4
4
4
4.2 4.4 4.6 4.8
4.2 4.4 4.6 4.8
4.2 4.4 4.6 4.8
LED V
F
= 3.02V
5
5
5
(200mA/Div)
(2V/Div)
(5V/Div)
(1V/Div)
I
IN
V
C2P
EN
OUT
x2 Mode Quiescent Current vs. Input Voltage
4.5
4.0
3.5
3.0
2.5
2.0
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
2.8
2.8
V
x1 Mode Inrush Current Response
IN
3
3
= 3.2V
LED Current vs. Input Voltage
3.2 3.4 3.6 3.8
3.2 3.4 3.6 3.8
Input Voltage (V)
Input Voltage (V)
Time (100μs/Div)
4
4
4.2 4.4 4.6 4.8
4.2 4.4 4.6 4.8
RT9379
www.richtek.com
LED V
F
= 3.02V
LED1
LED2
LED3
LED4
LED5
LED6
5
5
5