PCA9420 datasheet(67/87 Pages) NXP

67 / 87 page

NXP Semiconductors

PCA9420

Power management IC for low-power microcontroller applications

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

ICHG_TOPOFF

programmed value

I2C programmable,1 mA/

step

ICHG_TOPOFF ≥ 8 mA

-15

+15

ICHG_TOPOFF Accuracy

ICHG_TOPOFF < 8 mA; test

4 mA only in production

-20

+20

tDGL_BAT_CC2TOPOFF

ICHG_TOPOFF detection

deglitch time on fast charging

to top-off charging transition

RECHARGE MODE

140

165

VBAT_RESTART

Charging restart threshold

voltage

When below VBAT_ REG

[Note: reserve 1-bit MTP

bit to set the typical value,

140 mV or 240 mV]

185

240

270

tDGL_BAT_RESTART

Deglitch time, recharge

threshold detected

BATTERY PRESENCE DETECTION

IBAT_DET_SINK

Sink current during battery

detection

VIN = 5 V; Battery absent

tDGL(BAT_DET_SINK)

Deglitch time, for sinking

current

VIN = 5 V; Battery absent

300

IBAT_DET_SOURCE

Source current during battery

detection

VIN = 5 V; Battery absent

tDGL(BAT_DET_SOURCE)

Deglitch time, for sourcing

current

VIN = 5 V; Battery absent

300

VBAT_DET_LOW

Battery detection lower

threshold

VIN = 5 V; Battery absent

[Note: reserve 2-bit MTP

for programmability, 1.

7 V/1.8 V/1.9 V/2.0 V]

1.9

VBAT_DET_UP

Battery detection upper

threshold

VIN = 5 V; Battery absent

[Note: reserve 2-bit MTP

for programmability, 3.

2 V/3.3 V/3.4 V/3.5 V]

3.4

BATTERY-PACK NTC MONITOR (TS)

INTC-10 k

NTC thermistor bias current

VTS < ASYS-200 mV

(-12 %)

(+12 %)

µA

INTC-DIS-10 k

10 k NTC bias current when

charging is disabled

VTS < ASYS-200 mV

4.4

(-12 %)

5.6

(+12 %)

µA

VTS(0 °C)

TS threshold voltage at 0 °C NTC_BETA_SEL [2:0] =

000

1.171

1.372

1.45

VTS(0 °C)_HYS

VTS(0 °C)

Hysteresis Threshold

110

VTS(10 °C)

TS threshold voltage at 10 °C NTC_BETA_SEL [2:0] =

000

0.813

0.900

0.999

VTS(10 °C)_HYS

VTS(10 °C)

Hysteresis Threshold

VTS(45 °C)

TS threshold voltage at 45 °C NTC_BETA_SEL [2:0] =

000

0.205

0.246

0.303

VTS(45 °C)_HYS

VTS(45 °C)

Hysteresis Threshold

Table 81. EC table for Linear Charger...continued

PCA9420

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

Product data sheet

Rev. 4.0 — 28 November 2022

67 / 87

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