ACT8798(2008) View Datasheet(PDF) - Active-Semi, Inc

Part Name

Description

Manufacturer

ACT8798
(Rev.:2008)

Six Channel Integrated Power Management IC for Handheld Portable Equipment

Active-Semi, Inc 

ACT8798

Rev0, 10-Oct-08

STEP-DOWN DC/DC CONVERTERS

REGISTER DESCRIPTIONS

Note: See Table 1 for default register settings.

Table 8:

REG3 Control Register Map

ADDRESS

D7

D6

D5

30h

R

VRANGE

31h

R

R

R

32h

R

R

R

33h

R

R

R

DATA

D4

D3

D2

VSET

R

R

R

R

R

R

R

R

W/E

R: Read-Only bits. Default Values May Vary.

W/E: Write-Exact bits. Read/Write bits which must be written exactly as specified in Table 1

D1

D0

R

MODE

R

R

OK

ON

Table 9:

REG3 Control Register Bit Descriptions

ADDRESS

30h

NAME

VSET

30h

VRANGE

30h

31h

MODE

31h

32h

33h

ON

33h

OK

33h

33h

BIT ACCESS

FUNCTION

DESCRIPTION

[5:0]

R/W REG3 Output Voltage Selection

See Table 10

[6]

R/W

REG3 Voltage Range

Selection

0

Min VOUT = 1.1V

1

Min VOUT = 1.25V

[7]

R

READ ONLY

[0]

R/W

Mode Selection

0

PWM/PFM

1

Forced PWM

[7:1]

R

READ ONLY

[7:0]

R

READ ONLY

[0]

R/W

REG3 Enable

0

REG3 Disable

1

REG3 Enable

[1]

R

REG3 Power-OK

0

Output is not OK

1

Output is OK

[2]

W/E

WRITE-EXACT

[7:3]

R

READ ONLY

Innovative PowerTM

ActivePMUTM is a trademark of Active-Semi.

I2CTM is a trademark of Philips Electronics.

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www.active-semi.com

Copyright © 2008 Active-Semi, Inc.

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