ACT8931A datasheet(34/42 Pages) ACTIVE-SEMI

Part #	ACT8931A

Description	Advanced PMU for Rockchip RK2928/RK2926 Processors

PDF	42 Pages

Scroll/Zoom	100%

Manufacturer	ACTIVE-SEMI [Active-Semi, Inc]

Direct Link	http://www.active-semi.com

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34 / 42 page

ACT8931A

Rev 3, 29-Nov-12

Innovative Power

ActivePMU

TM and ActivePathTM are trademarks of Active-Semi.

2CTM is a trademark of NXP.

- 34 -

www.active-semi.com

nodes of the DC/DCs.

REFBP is a noise-filtered reference, and internally

has a direct connection to the linear regulator

controller. Any noise injected onto REFBP will

directly affect the outputs of the linear regulators,

and therefore special care should be taken to

ensure that no noise is injected to the outputs via

REFBP. As with the LDO output capacitors, the

REFBP bypass capacitor should be placed as close

to the IC as possible, with short, direct connections

to the star-ground. Avoid the use of via whenever

possible. Noisy nodes, such as from the DC/DCs,

should be routed as far away from REFBP as

possible.

ACT8931A Datasheet(PDF) 34 Page - Active-Semi, Inc