Datasheet

TPS65720

TPS65721

SLVS979 –OCTOBER 2009

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LDO_CTRL Register Address: 08h (read/write)

LDO_CTRL B7 B6 B5 B4 B3 B2 B1 BO

Bit name and function HOLD_LDO1 LDO1_DISCH LDO1[5] LDO1[4] LDO1[3] LDO1[2] LDO1[1] LDO1[0]

Default 0 1 1 0 0 1 0 1

Default value loaded by: UVLO/R UVLO/R UVLO/R UVLO/R UVLO/R UVLO/R UVLO/R UVLO/R

Read/write R/W R/W R/W R/W R/W R/W R/W R/W

Bit 7 HOLD_LDO1:

0 = LDO1 is disabled when HOLD_LDO1 pin is pulled LOW and PB_IN is released HIGH

1 = LDO1 stays enabled when HOLD_LDO1 pin is pulled LOW and PB_IN is released HIGH

Bit 6 LDO1_DISCH:

0 = LDO1 output is not discharged when LDO1 is disabled

1 = LDO1 output is discharged when LDO1 is disabled

Bit 5..0 LDO1 output voltage setting according to the table listed for DCDC1:

The voltage setting is only valid for TPS65720. For TPS65721, the LDO1 voltage is set by an

external resistor divider. The voltage setting is according to the same table given for DEFDCDC1.

CONTROL0 Register Address: 09h (read/write)

CONTROL0 B7 B6 B5 B4 B3 B2 B1 BO

Bit name and function F_PWM PGOODZ_DCDC1 PGOODZ_LDO1

Default 0 PGOODDCDC1 PGOODLDO1 0 0 0 0 0

Default value loaded by: UVLO/R

Read/write R/W R R R R R R R

Bit 7 F_PWM:

0 = DCDC converter is in PWM/PFM mode

1 = DCDC converter is in forced PWM mode

Bit 6 PGOODZ_DCDC1:

0 = indicates that the DCDC converters output voltage is within its nominal range

1 = range indicates that the DCDC converters output voltage is below the target regulation voltage or

disabled

Bit 5 PGOODZ_LDO1:

0 = indicates that the LDO1 output voltage is within its nominal range

1 = indicates that the LDO1 output voltage is below the target regulation voltage or disabled

Product Folder Link(s): TPS65720 TPS65721