AP3156
HIGH EFFICIENCY 1X/1.5X/2X CHARGE PUMP
FOR WHITE LED APPLICATIONS
Serial Digital Interface
(Continued)
First Sequence
Second Sequence
T SHI
T SLO
T SEP
T SEP
SDI
1
2
7
8
9
1
2
Current Mode Selection
Select Low Current Mode
Figure 2: Current Mode Selection (Dual-Sequence Command)
First Sequence
Second Sequence
T SHI
T SLO
T SEP
T SEP
SDI
1
2
6
7
8
1
2
Switching Frequency Selection
Select Switching Frequency
to 1 MHZ
Figure 3: Switching Frequency Selection (Dual-Sequence Command)
First Sequence
SDI
T SHI
T SLO
T SEP
1
2
31
32
33
Soft Reset
Figure 4: Soft Reset (Single-Sequence Command)
AP3156 Rev. 1
12 of 15
www.diodes.com
SEPTEMBER 2009
? Diodes Incorporated
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