PCA9420 datasheet(46/87 Pages) NXP

46 / 87 page

NXP Semiconductors

PCA9420

Power management IC for low-power microcontroller applications

Bit

Symbol

Default value Type

Function

VOUTSW1 _OK 0

SW1 VOUT “Power-good” Status

0: VOUT_SW1 is not OK, i.e., VOUTSW1 / VOUTSW1(nominal) ≤

90 % or VOUTSW1 / VOUTSW1(nominal) ≥ 110 %

1: VOUT_SW1 is OK, i.e., 110 % > VOUTSW1 / VOUTSW1(nominal) >

90 %

VOUTSW2 _OK 0

SW2 VOUT “Power-good” Status

0: VOUT_SW2 is not OK, i.e., VOUTSW2 / VOUTSW2(nominal) ≤

90 % or VOUTSW2 / VOUTSW2(nominal) ≥ 110 %

1: VOUT_SW2 is OK, i.e., 110 % > VOUTSW2 / VOUTSW2(nominal) >

90 %

VOUTLDO1 _OK 0

LDO1VOUT “Power-good” Status

0: VOUTLDO1 is not OK, i.e., VOUTLDO1 / VOUTLDO1 (nominal) ≤

90 % or VOUT LDO1 / VOUT LDO1 (nominal) ≥ 110 %

1: VOUTLDO1 is OK, i.e., 110 % > VOUTLDO1 / VOUTLDO1

(nominal) > 90 %

VOUTLDO2_OK 0

LDO2VOUT “Power-good” Status

0: VOUTLDO2 is not OK, i.e., VOUTLDO2 / VOUTLDO2 (nominal) ≤

90 % or VOUTLDO2 / VOUTLDO2 (nominal) ≥ 110 %

1: VOUTLDO2 is OK, i.e., 110 % > VOUTLDO2 / VOUTLDO2

(nominal) > 90 %

RSVD

Reserved bit

RSVD

Reserved bit

RSVD

Reserved bit

RSVD

Reserved bit

Table 42. REG_STATUS register bit description

9.5.27 Active Discharge Regulator control (ACT_DISCHARGE_CNTL, address 21h)

This register stores the control functions of the SW1, SW2, LDO1, LDO2. This is a READ

AND WRITE register.

Bit

Symbol

Default value Type Function

RSVD

R/W Reserved bit

RSVD

R/W Reserved bit

RSVD

R/W Reserved bit

RSVD

R/W Reserved bit

nEN_SW1_BLEED 0

R/W SW1 Output Active Discharge Turn-on Control in the regulator disabled

0: Enable output discharge bleeding resistor

1: Disable Output discharge bleeding resistor

nEN_SW2_BLEED 0

R/W SW2 Output Active Discharge Turn-on Control in the regulator disabled

0: Enable output discharge bleeding resistor

1: Disable Output discharge bleeding resistor

Table 43. ACT_DISCHARGE_CNTL register bit description

PCA9420

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 4.0 — 28 November 2022

46 / 87

PCA9420 Datasheet(PDF) 46 Page - NXP Semiconductors

PCA9420 Datasheet(HTML) 46 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87

Datasheet Download

Link URL