Ap3156, Serial digital interface – Diodes AP3156 User Manual
Page 12
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AP3156
HIGH EFFICIENCY 1X/1.5X/2X CHARGE PUMP
FOR WHITE LED APPLICATIONS
AP3156 Rev. 1
12 of 15
SEPTEMBER 2009
©
Diodes Incorporated
T
SLO
T
SHI
T
SEP
SDI
1
2
8
9
7
2
1
Second Sequence
Current Mode Selection
Select Low Current Mode
First Sequence
T
SEP
Figure 2: Current Mode Selection (Dual-Sequence Command)
T
SLO
T
SHI
T
SEP
SDI
1
2
7
8
6
2
1
Second Sequence
Switching Frequency Selection
Select Switching Frequency
to 1 MHZ
First Sequence
T
SEP
Figure 3: Switching Frequency Selection (Dual-Sequence Command)
T
SLO
T
SHI
T
SEP
SDI
1
2
32
33
31
Soft Reset
First Sequence
Figure 4: Soft Reset (Single-Sequence Command)
Serial Digital Interface
(Continued)
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