MP3313 Rev.1.0

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21

8/2/2017

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Table 9: Boost Control Register

Addr: 0x13

Bit

Bit Name

Access

Default

Description

7

N/A

r

N/A

Reserved.

6

FS_SHFT

r/w

1

Switching frequency shift bit.

0: -12% shift

1: no shift

5

FS

r/w

1

Boost switching frequency set bit.

0: 500kHz

1: 1MHz

4

L_MIN

r/w

0

Minimum inductor select bit.

0

: 4.7μH

1: 10μH

3:2

OVP1:0

r/w

11

Over-voltage protection set bits.

00: 17V

01: 23V

10: 30V

11: 38V

1:0

CL1:0

r/w

11

Current limit set bits.

00: 0.75A

01: 1A

10: 1.25A

11: 1.5A

Table 10: Flash Current Set Register

Addr: 0x14

Bit

Bit Name

Access

Default

Description

7

FL_CL

r/w

0

Current limit in flash mode.

0: 2.5A

1: 3A

6:0

IFL6:0

r/w

0101000

Flash current set register. 1mA/step.

0x0A: 10mA

0x0B: 11mA

....

0x28: 40mA (default)

...

0x64: 100mA

0x64~7F: reserved

Table 11: Auto-Switching Frequency High Threshold

Addr: 0x15

Bit

Bit Name

Access

Default

Description

7:0

FS_AUTOH

r/w

00000000

Auto-switching frequency high threshold (500kHz to 1MHz). Compared

with the 8 MSBs of the brightness code. The function is disabled when

both FS_AUTOH and FS_AUTOL are set to 0.

Table 12: Auto-Switching Frequency Low Threshold

Addr: 0x16

Bit

Bit Name

Access

Default

Description

7:0

FS_AUTOL

r/w

00000000

Auto-switching

frequency

low

threshold

(250kHz

to

500kHz).

Compared with the 8 MSBs of the brightness code. The function is

disabled when both FS_AUTOH and FS_AUTOL are set to 0.