rt9911 Richtek Technology Corporation, rt9911 Datasheet - Page 18

• Manufacturer Part Number: rt9911
• Description: 6 Channel Dc/dc Converters
• Manufacturer: Richtek Technology Corporation

RT9911
www.richtek.com
18
-8.152
-8.151
-8.150
-8.149
-8.148
-8.147
-8.146
-8.145
-8.144
-8.143
-8.142
-8.02
-8.03
-8.04
-8.05
-8.06
-8.07
-8.08
-8.09
-8.10
-8.11
-8.12
2.4
0
CH5 Output Voltage vs. Output Current
V
V
CH6 LX6 and Output Voltage Ripple
V
CH5 Output Voltage vs. V
IN
IN
IN
-10
= 3.7V, V
= 3.0V, PVDD5 = 3.3V, I
= 1.8V, V
2.8
-20
3.2
OUT
-30
OUT
Loading Current (mA)
V
= -8V
= 3 x WLED, I
Time (1μs/Div)
3.6
DDM
-40
Voltage (V)
-50
4
OUT
-60
= 30mA
4.4
OUT
-70
= 20mA
DDM
4.8
-80
Voltage
5.2
-90
-100
5.6
-6.02
-6.03
-6.04
-6.05
-6.06
-6.07
-6.08
-6.09
-6.10
-6.11
-6.12
100
90
80
70
60
50
40
30
20
10
0
2.4
1.5
V
I
V
OUT
CH5 Output Voltage vs. V
IN
IN
= 3.0V, PVDD5 = 3.3V, I
= 2.5V, V
CH6 Efficiency vs. Input Voltage
CH7 Load Transient Response
2.8
= 20mA
2
3.2
2.5
OUT
V
Input Voltage (V)
Time (1ms/Div)
= 1.8V
3.6
DDM
3
Voltage (V)
DS9911-04 August 2007
4
OUT
3.5
= 30mA
4.4
DDM
4
4.8
Voltage
4.5
5.2
5.6
5