LP8725TLE-ASLASHNOPB datasheet(28/46 Pages) TI1

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LP8725

SNVS618G – DECEMBER 2009 – REVISED MAY 2013

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Registers 0x01 - 0x08, 0x0A

Startup Delay Selection

LDO1_T[2:0]

000 - startup delay 0

LDO2_T[2:0]

001 - startup delay = 1 * time step ts

LDO3_T[2:0]

010 - startup delay = 2 * time step ts

LDO4_T[2:0]

011 - startup delay = 3 * time step ts

LDO5_T[2:0]

100 - startup delay = 4 * time step ts

LILO1_T[2:0]

101 - startup delay = 5 * time step ts

LILO2_T[2:0]

110 - startup delay = 6 * time step ts

BUCK1_T[2:0]

111 - NO startup

BUCK2_T[2:0]

For proper startup operation “NO startup” <111> should have the corresponding

enable bit in registers 0x00 & 0x0D set to 0 (disable)

Registers 0x09, 0x0B

Buck Current Limit Selection

BUCK1_CL[1:0]

00 - 460 mA peak (250 mA max IOUT)

BUCK2_CL[1:0]

01 - 780 mA peak (450 mA max IOUT)

10 - 1050 mA peak (600 mA max IOUT)

11 - 1370 mA peak (800 mA max IOUT)

PDN_BUCK1

Pull-down BUCK1/2:

PDN_BUCK2

1 - Pull down enabled

0 - Pull down disabled

PWM_BUCK1

1 - BUCK1/2 is forced to work in PWM mode

PWM_BUCK2

0 - BUCK1/2 works in automatic ECO/PWM selection mode

BK1_FLAG MASK

1 - Mask the BUCK OK flag

BK2_FLAG MASK

0 - No masking of BUCK OK flag

LDO Enable Control

LDO1_EN

In STANDBY mode:

In IDLE mode the bit has immediate effect.

LDO2_EN

1 - During next STARTUP sequence will be 1 - Enable

LDO3_EN

enabled.

0 - Disable

LDO4_EN

0 - During next startup sequence will be

LDO5_EN

NOT enabled.

LILO1_EN

LILO2_EN

LDO1_FLAG MASK

1- Mask the LDO1 OK flag

0 - No masking of LDO1 OK flag

Pull Down

PDNLDO1

LDO pull-down control

PDNLDO2

1 - Pull down enabled

PDNLDO3

0 - Pull down disabled

PDNLDO4

PDNLDO5

PDNLILO1

PDNLILO2

APU_TSD

This bit defines either to reset registers or not before the PMU automatically starts startup

sequence from Thermal Shutdown after cooling down if EN-pin is High.

1 - No change to registers - content stays the same as before Thermal Shutdown.

0 - If CONFIG = '1' Reset registers to default values before startup from Thermal

Shutdown.

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