PCA9420 datasheet(49/87 Pages) NXP

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NXP Semiconductors

PCA9420

Power management IC for low-power microcontroller applications

00111=1.675 V

10000=1.900 V

11001-11111=2.1 V

01000=1.700 V

10001=1.925 V

Table 47. SW2 default output voltage for mode setting 0...continued

9.5.30 Mode configuration mode setting 0_2 (MODECFG_0_2, address 24h)

This register contains mode setting 0, part 2 configuration register. This is a READ AND

WRITE register.

Bit

Symbol

Default value Type

Function

LDO1_ OUT_0

[3:0]

0100

R/W

LDO1 default output voltage for mode setting 0 (see below).

Note: The default value for LDO1_OUT_0 [3:0] is set at 1.8V, but it

should be MTP programmable.

SW1_EN_0

R/W

SW1 Enable Control in mode setting 0:

0: SW1 disabled

1: SW1 enabled

Note: reserve 1-bit MTP to set its default value

SW2_EN_0

R/W

SW2 Enable Control in mode setting 0:

0: SW2 disabled

1: SW2 enabled

Note: reserve 1-bit MTP to set its default value

LDO1_EN_0

R/W

LDO1 Enable Control in mode setting 0:

0: LDO1 disabled

1: LDO1 enabled

Note: reserve 1-bit MTP to set its default value

LDO2_EN_0

R/W

LDO2 Enable Control in mode setting 0:

0: LDO2 disabled

1: LDO2 enabled

Note: reserve 1-bit MTP to set its default value

Table 48. MODECFG_0_2 register bit description

0000: 1.700 V

0011: 1.775 V

0110: 1.850 V

1001 to 1111:1.9V

0001: 1.725 V

0100: 1.800 V

(default)

0111: 1.875 V

0010: 1.750 V

0101: 1.825 V

1000: 1.900 V

Table 49. LDO1 default output voltage for mode setting 0

9.5.31 Mode configuration mode setting 0_3 (MODECFG_0_3, address 25h)

This register contains mode setting 0, part 3 configuration register. This is a READ AND

WRITE register.

PCA9420

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Product data sheet

Rev. 4.0 — 28 November 2022

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