MP8843 – 6V, 3A, SYNCHRONOUS, STEP-DOWN SWITCHER WITH I

MP8843 Rev. 1.0

www.MonolithicPower.com

13

7/15/2016

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2016 MPS. All Rights Reserved.

OPERATION

Register Map

ADD

NAME

R/W

D7

D6

D5

D4

D3

D2

D1

D0

00

VSEL

R/W

EN

Output reference

01

SysCntlreg1

R/W

Switching frequency

Reserved

PG_DELAY

PG_LOHI

Mode

02

SysCntlreg2

R/W

Reserved

Go

Out_Dis

Reserved

Slew rate

03

ID1

R

Vendor ID (0001)

Die ID

04

ID2

R

Reserved

Die rev

05

Status

R

OT

UVLO

OVP

Vo_UV

PGOOD

OTW

EN

state

Default Value of Register

ADD

NAME

R/W

D7

D6

D5

D4

D3

D2

D1

D0

00

VSEL

R/W

1

1

0

0

1

1

0

1

01

SysCntlreg1

R/W

0

1

0

1

0

1

1

1

02

SysCntlreg2

R/W

1

1

0

0

0

1

1

0

03

ID1

R

0

0

0

1

0

0

0

1

04

ID2

R

0

0

0

0

0

0

0

0

05

Status

R

NA

NA

NA

NA

NA

NA

NA

NA

Register Description

1. Reg00 VSEL

NAME

BITS

DESCRIPTION

EN

D7

I

takes over.

Output

reference

D[6:0]

For direct output voltage sense, refer to Figure 4. Set the output voltage from 0.6V to

1.1V, per Table 1.

For output sense through the feedback resistor network, refer to Figure 6 and the

Extending the Output Voltage Range section on page 19.