NPM1100-CAAA-R datasheet(24/58 Pages) NORDIC

24 / 58 page

Core components

VDROPOUT_CHARGER. If more current is required, CHARGER enters Supplement mode, switching to provide

current from the battery, up to IBATLIM.

If a charge cycle ends and ILOAD exceeds ILIM, CHARGER connects the battery and enters Supplement mode

to maintain VINT.

When

VBUS and the battery are connected, the maximum supported load is ILIM + IBATLIM.

When

VBUS is disconnected, CHARGER sources current for VINT from the battery. In Supplement mode, or

when

VBUS is disconnected, VINT voltage is the same as the battery voltage.

VBUS

connected

Battery

connected

Load

CHARGER

VINT supply VINT voltage

Yes

(ILOAD + ICHGLIM) < ILIM

Charging

VBUS

VBUS)

Yes

(ILOAD + ICHGLIM) > ILIM

ILOAD < ILIM

Charging

(ICHG reduced)

VBUS

VBAT) +

VDROPOUTCHARGER

Yes

ILOAD > ILIM

Supplement

mode

VBUS and

VBAT

VBAT)1

Yes

ILOAD < ILIM

N/A

VBUS

VBUS)

Yes

ILOAD ≤ IBATLIM

N/A

VBAT

VBAT)1

Table 14: Battery supply

1CHARGER has a resistance of RONCHARGER between

VBAT and VINT. The voltage drop from VBAT to VINT

is IBAT x RONCHARGER, where IBAT is the current being drawn from the battery.

6.2.11 Electrical parameters

Symbol

Description

Min.

Typ.

Max.

Unit

ICHGACC

Fast Charge current accuracy, 0.1% accuracy

external resistor

±10

VTERM0

Termination voltage,

VTERMSET = LOW

4.1

VTERM1

Termination voltage,

VTERMSET = HIGH

4.2

VTERMACC0

Termination voltage accuracy, Tambient = 25°C

Termination voltage accuracy

-0.5

-1

0.5

VTHIGH_DELTA

VTERM voltage reduction at high temperature

100

ITERM

Termination current

% of

ICHG

ITRICKLE

Trickle charge current

% of

ICHG

IREDUCED

Fast charge current when device junction

temperature is above THIGH or battery

temperature is below TNTCCOOL

% of

ICHG

4445_367 v1.0

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