PCA9420BS datasheet(57/85 Pages) NXP

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NXP Semiconductors

PCA9420

Power management IC for low-power microcontroller applications

00001=1.525 V

01010=1.750 V

10011=1.975 V

00010=1.550 V

01011=1.775 V

10100=2.000 V

00011=1.575 V

01100=1.800 V

(default)

10101=2.025 V

00100=1.600 V

01101=1.825 V

10110=2.050 V

00101=1.625 V

01110=1.850 V

10111=2.075 V

00110=1.650 V

01111=1.875 V

11000=2.100 V

00111=1.675 V

10000=1.900 V

11001-11111=2.1 V

01000=1.700 V

10001=1.925 V

Table 71. SW2 default output voltage for mode setting 3...continued

9.5.42 Mode configuration mode setting 3_2 (MODECFG_3_2, address 30h)

This register contains mode setting 3, part 2 configuration register. This is a READ AND WRITE register.

Bit

Symbol

Default value Type

Function

LDO1_ OUT_3

[3:0]

0100

R/W

LDO1 default output voltage for mode setting 3 (see below).

SW1_EN_3

R/W

SW1 Enable Control in mode setting 3

0: SW1 disabled

1: SW1 enabled

SW2_EN_3

R/W

SW2 Enable Control in mode setting 3

0: SW2 disabled

1: SW2 enabled

LDO1_EN_3

R/W

LDO1 Enable Control in mode setting 3

0: LDO1 disabled

1: LDO1 enabled

LDO2_EN_3

R/W

LDO2 Enable Control in mode setting 3

0: LDO2 disabled

1: LDO2 enabled

Table 72. MODECFG_3_2 register bit description

0000: 1.700 V

0011: 1.775 V

0110: 1.850 V

1001 to 1111:1.9 V

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 73. LDO1 default output voltage for mode setting 3

9.5.43 Mode configuration mode setting 3_3 (MODECFG_3_3, address 31h)

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

PCA9420

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Product data sheet

Rev. 4.2 — 26 July 2023

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