Diodes AP3156 Manuel d'utilisateur télécharger pdf (Page 12)

AP3156

HIGH EFFICIENCY 1X/1.5X/2X CHARGE PUMP

FOR WHITE LED APPLICATIONS

AP3156 Rev. 1 12 of 15 SEPTEMBER 2009

www.diodes.com © Diodes Incorporated

T

SLO

T

SHI

T

SEP

SDI

1

2

89

7

21

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

78

6

21

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)

1 2 ... 7 8 9 10 11 12 13 14 15

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