ACT8937A datasheet(27/45 Pages) ACTIVE-SEMI

27 / 45 page

ACT8937A

Rev 1, 22-Oct-12

Innovative Power

ActivePMU

TM and ActivePathTM are trademarks of Active-Semi.

2CTM is a trademark of NXP.

- 27 -

www.active-semi.com

The ACT8937A is optimized for use in applications

using

the

S5PC100, S5PC110 and S5PV210

processors, supporting both the power domains as

well as the signal interface for these processors.

The following paragraphs describe how to design

ACT8937A with S5PV210 Processor, but the

design

guidelines

are

directly

applicable

S5PC100 and S5PC110 as well.

While the ACT8937A supports many possible

configurations for powering these processors, one

of the most common configurations is detailed in

this datasheet. In general, this document refers to

the ACT8937A pin names and functions. However,

in cases where the description of interconnections

between these devices benefits by doing so, both

the ACT8937A pin names and the Samsung

processor pin names are provided. When this is

done, the S5PV210 pin names are located after the

ACT8937A pin names, and are italicized and

located inside parentheses. For example, PWREN

(XPWRRGTON) refers to the logic signal applied to

the ACT8937A's PWREN input, identifying that it is

driven from the S5PV210's XPWRRGTON output.

Likewise, OUT1 (VDD_IO) refers to ACT8937A's

OUT1 pin, identifying that it is connected to the

S5PV210's VDD_IO power domain.

SYSTEM CONTROL INFORMATION

Interfacing with the Samsung S5PC100, S5PC110 and S5PV210 Processors

Table 2:

ACT8937A and Samsung S5PV210 Power Domains

POWER DOMAIN

ACT8937A CHANNEL

TYPE

DEFAULT VOLTAGE

CURRENT CAPABILITY

VDD_IO

REG1

DC/DC

3.3V

1100mA

VDD_INT

REG2

DC/DC

1.1V/1.V

1100mA

VDD_ARM

REG3

DC/DC

1.25V/1.25V

1200mA

VDD_xPLL

REG4

LDO

1.1V

150mA

VDD_Alive

REG5

LDO

1.1V

150mA

VDD_UOTG_D

REG6

LDO

1.1V

250mA

VDD_UOTG_A

REG7

LDO

3.3V

250mA

Table 3:

ACT8937A and Samsung S5PV210 Power Modes

POWER

MODE

CONTROL STATE

POWER DOMAIN STATE

QUIESCENT

CURRENT

ALL ON

PWRHLD is asserted, PWREN is asserted

REG1, REG2, REG3, REG4, REG5,

REG6 and REG7 are all on

420µA

NORMAL

PWRHLD is asserted, PWREN is asserted,

REG6 and REG7 are disabled after system

boots up.

REG1, REG2, REG3, REG4 and

REG5 are on. REG6 and REG7 are off

340µA

SLEEP

PWRHLD is asserted, PWREN is de-asserted

REG1 and REG5 are on. REG2, REG3,

REG4, REG6 and REG7 are off

190µA

ALL OFF

PWRHLD is de-asserted, PWREN is de-

asserted

REG1, REG2, REG3, REG4, REG5,

REG6 and REG7 are all off

<18µA

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