MP8846 – 6A, 8V SYNCHRONOUS STEP-DOWN CONVERTER

MP8846 Rev. 1.0

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19

5/19/2015

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the MP8846. The MP8846 performs an update

on the falling edge of the LSB byte.

ADD sets the MP8846 address. The default 7-

bit address of the MP8846 is “68” (hex) or

“1101000” (binary) if ADD is floated or pulled up

to VCC. The other address of the MP8846 is

“60” (hex) or “1100000” (binary) if ADD is pulled

to ground. When the master sends the address

as an 8-bit value, the 7-bit address should be

followed

by

“0/1”

to

indicate

write/read

operation (see Table 1).

TABLE 1. MP8846 Address

ADD

Address (Hex)

Address (Binary)

A7

A6

A5

A4

A3

A2

A1

A0

(R/W)

Floated or Connected to

VCC

D0

1

1

0

1

0

0

0

0

D1

1

1

0

1

0

0

0

1

Connected to GND

C0

1

1

0

0

0

0

0

0

C1

1

1

0

0

0

0

0

1

MP8846 Register Address

The MP8846 contains four registers: register 00 to register 03. The four registers complete the following

actions:

• Register 00 sets the output voltage and decides whether the output voltage is controlled by the

• Register 01 sets the MP8846 operating features.

• Registers 02 and 03 are read registers only. Register 03 indicates the MP8846 status. The

register map is shown in next section.