LP8754 datasheet(34/53 Pages) TI1

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LP8754

SNVS861A – FEBRUARY 2014 – REVISED AUGUST 2014

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Bits

Field

Type

Default

Description

DEVICE

Contains Device ID

6:2

OTP_REV

0 0001

OTP_REV

Contains OTP Version ID

1:0

DIE_REV

Contains Revision ID

7.6.17 PFM_LEV_B0

Address: 0x19

Reserved

PFM_ENTRY_B0[2:0]

Reserved

PFM_EXIT_B0[2:0]

Bits

Field

Type

Default

Description

Reserved

R/W

6:4

PFM_ENTRY_B0

R/W

011

PFM_ENTRY_B0 (1)

Sets the target PFM entry level for Buck 0. The final PWM-to-PFM switchover current

varies slightly and is dependant on the output voltage, input voltage and the inductor

current level.

000 = 100 mA

001 = 125 mA

010 = 150 mA

011 = 175 mA

100 = 225 mA

101 = Reserved

110 = Reserved

111 = Reserved

Reserved

R/W

2:0

PFM_EXIT_B0

R/W

110

PFM_EXIT_B0 (1)

Sets the target PFM exit level for Buck 0. The final PFM-to-PWM switchover current

varies slightly and is dependant on the output voltage, input voltage and the inductor

current level.

000 = Reserved

001 = Reserved

010 = Reserved

011 = 175 mA

100 = 225 mA

101 = 275 mA

110 = 325 mA

111 = 375 mA

(1)

For proper operation, the PFM exit current level should be at least 150 mA higher than the PFM entry current level.

7.6.18 PHASE_LEV_B0

Address: 0x1F

Reserved

ADD_PH_B0[2:0]

Reserved

SHED_PH_B0[2:0]

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