MP8847 – 6A, 2.7V-6V, HIGH-EFFICIENCY, SYNCHRONOUS

STEP-DOWN SWITCHER WITH I

MP8847 Rev. 1.02

www.MonolithicPower.com

20

12/28/2017

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

© 2017 MPS. All Rights Reserved.

inductor, the actual output voltage slew rate

should be a little slower.

PG Multi-Use

The MP8847 PG pin has multi-usage. When the

PG Control bit (Reg03 SysCntlreg2 D1) is 0,

PG indicates the Vo status, such as Vo over-

voltage or under-voltage. When the PG Control

bit (Reg03 sysCntlrge2 D1) is 1, the PG voltage

is controlled by the PG Set bit (Reg03

sysCntlrge2 D0).The PG voltage is high if D0=0;

otherwise, the PG voltage is low (see Table 3).

Table 3: PG Multi-Use

D1

D0

PG

0

0

PG indicator

0

1

1

0

PG forced to 1

1

1

PG forced to 0

I

register can hold on after EN changes low. The

updated register can be held for later

application conditions, even if the external EN

pulls low.