NPM1100-CAAA-R datasheet(11/58 Pages) NORDIC

11 / 58 page

Product overview

If Ship mode is not required, then

SHPACT and SHPHLD pins may be tied to AVSS.

Button

VBAT

nPM1100

From system or test pin

100 kΩ

typ

500 kΩ

SHPACT

SHPHLD

Figure 3: A typical configuration for Ship mode

3.6 Thermal protection

The device implements thermal regulation based on battery temperature, see Battery thermal protection

using NTC thermistor (NTC) on page 21 and Charger thermal regulation on page 22.

In addition to battery thermal protection and charger thermal regulation, a global thermal shutdown

based on die temperature is implemented when die temperature exceeds the operating temperature

range, see TSD. All device functions are disabled in thermal shutdown. The device functions are re-enabled

when the temperature is sufficiently reduced according to a hysteresis TSDHYST.

3.7 Battery considerations

The charger can only be used with Li-ion/Li-poly rechargeable batteries.

Battery packs connected to the

VBAT pin must contain the following protection circuitry:

• Overcharge protection

• Undervoltage protection

• Overcurrent discharge fuse

• Thermal fuse to protect from overtemperature (if NTC thermistor is not present)

3.8 Charging and Error LED drivers

CHARGER controls the

CHG and ERR pins, which are used to drive LEDs and/or signal status to an external

circuit.

See Charging indication (CHG) and charging error indication (ERR) on page 23 for more information.

3.9 System electrical parameters

4445_367 v1.0

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