LP8733 datasheet(44/86 Pages) TI2

44 / 86 page

7.6.1.4 BUCK0_CTRL_2

BUCK0_CTRL_2 is shown in Table 7-15, Address: 0x03

Table 7-14. BUCK0_CTRL_2 Register

Reserved - do not use

BUCK0_ILIM[2:0]

BUCK0_SLEW_RATE[2:0]

Table 7-15. BUCK0_CTRL_2 Register Field Descriptions

Bits

Field

Type

Default

Description

7:6

Reserved - do not

use

R/W

5:3

BUCK0_ILIM[2:0]

R/W

Sets the switch current limit of Buck0. Can be programmed at any time during

operation:

0x0 - 1.5 A

0x1 - 2.0 A

0x2 - 2.5 A

0x3 - 3.0 A

0x4 - 3.5 A

0x5 - 4.0 A

0x6 - Reserved - do not use.

0x7 - Reserved - do not use.

2:0

BUCK0_SLEW_RA

TE[2:0]

R/W

Sets the output voltage slew rate for Buck0 regulator (rising and falling edges):

0x0 - Reserved - do not use.

0x1 - Reserved - do not use.

0x2 - 10 mV/µs

0x3 - 7.5 mV/µs

0x4 - 3.8 mV/µs

0x5 - 1.9 mV/µs

0x6 - 0.94 mV/µs

0x7 - 0.47 mV/µs

7.6.1.5 BUCK1_CTRL_1

BUCK1_CTRL_1 is shown in Table 7-17, Address: 0x04

Table 7-16. BUCK1_CTRL_1 Register

Reserved - do not use

BUCK1_FPWM BUCK1_RDIS_

BUCK1_EN_PI

N_CTRL

BUCK1_EN

Table 7-17. BUCK1_CTRL_1 Register Field Descriptions

Bits

Field

Type

Default

Description

7:4

Reserved - do not

use

R/W

0000

BUCK1_FPWM

R/W

Buck1 mode selection:

0 - Automatic transitions between the PFM and PWM modes (AUTO mode).

1 - Forced to PWM operation.

BUCK1_RDIS_EN

R/W

Enable output discharge resistor (RDIS_Bx) when the Buck1 is disabled:

0 - Discharge resistor is disabled.

1 - Discharge resistor is enabled.

BUCK1_EN_PIN

_CTRL

R/W

Enable control for the Buck1:

0 - only the BUCK1_EN bit controls the Buck1

1 - BUCK1_EN bit and the EN pin control the Buck1.

BUCK1_EN

R/W

Enable the Buck1 regulator:

0 - Buck1 regulator is disabled.

1 - Buck1 regulator is enabled.

LP8733-Q1

SNVSB64A – JUNE 2019 – REVISED JUNE 2021

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