BQ40Z50RSMR-R2 datasheet(39/55 Pages) TI2

Nome de Peças	BQ40Z50RSMR-R2

Descrição Electrónicos	BQ40Z50-R2 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

PDF	55 Pages

Scroll/Zoom	100%

Fabricante Electrônico	TI2 [Texas Instruments]

Página de início	https://www.ti.com

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39 / 55 page

Figure 9-14. Thermistor Drive

9.2.2.3.5 LEDs

Three LED control outputs provide constant current sinks for the driving external LEDs. These outputs are

configured to provide voltage and control for up to five LEDs. No external bias voltage is required. Unused

LEDCNTL pins can remain open or they can be connected to VSS. The DISP pin should be connected to VSS if

the LED feature is not used.

Figure 9-15. LEDs

9.2.2.3.6 Safety PTC Thermistor

The BQ40Z50-R2 device provides support for a safety PTC thermistor. The PTC thermistor is connected

between the PTC and BAT pins. It can be placed close to the CHG/DSG FETs to monitor the temperature. The

PTC pin monitors the voltage at the pin and will trip if the thermistor resistance exceeds the defined threshold. A

PTC fault is one of the permanent failure modes. It can only be cleared by a POR.

To disable, connect PTC and PTCEN to VSS.

Figure 9-16. PTC Thermistor

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BQ40Z50-R2

SLUSCS4C – JUNE 2017 – REVISED APRIL 2021

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BQ40Z50RSMR-R2 Folha de dados(PDF) 39 Page - Texas Instruments