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BQ25173-Q1

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Automotive 800-mA programmable linear charger for one- to four-cell supercapacitor with status pins

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Data sheet

BQ25173-Q1

ACTIVE
Data sheet Order now

Product details

Number of series cells 1, 2, 3, 4 Charge current (max) (A) 0.8 Vin (max) (V) 18 Cell chemistry SuperCap Battery charge voltage (max) (V) 10.5 Absolute max Vin (max) (V) 40 Control topology Linear Control interface Standalone (RC-Settable) Features AEC-Q100 Automotive Qual, IC thermal regulation, Input OVP Vin (min) (V) 3 Rating Automotive Operating temperature range (°C) -40 to 125
Number of series cells 1, 2, 3, 4 Charge current (max) (A) 0.8 Vin (max) (V) 18 Cell chemistry SuperCap Battery charge voltage (max) (V) 10.5 Absolute max Vin (max) (V) 40 Control topology Linear Control interface Standalone (RC-Settable) Features AEC-Q100 Automotive Qual, IC thermal regulation, Input OVP Vin (min) (V) 3 Rating Automotive Operating temperature range (°C) -40 to 125
VSON (DRC) 10 9 mm² 3 x 3
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C ≤ T A ≤ 125°C
    • HBM ESD classification level 2
    • CDM ESD classification level C4B
  • 40-V load-dump tolerant to support charging back-up supercapacitor, 3-V to 18-V operating
  • Automatic Sleep mode for low power consumption
    • 350-nA output leakage current
    • 2-µA input leakage current when charge disabled
  • Support 1- to 4-cell supercapacitor charging from 0 V
  • External resistor programmable operation
    • FB pin to adjust supercapacitor regulation voltage
    • ISET to set charge current from 10 mA to 800 mA
  • High accuracy
    • ±1% charge voltage accuracy
    • ±10% charge current accuracy
  • Charging features
    • CE pin for charging function control
    • Open-drain output for status and fault indication
    • Open-drain output for power-good indication
  • Integrated fault protection
    • 18-V IN overvoltage protection
    • 1000-mA overcurrent protection
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • ISET pin short protection
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C ≤ T A ≤ 125°C
    • HBM ESD classification level 2
    • CDM ESD classification level C4B
  • 40-V load-dump tolerant to support charging back-up supercapacitor, 3-V to 18-V operating
  • Automatic Sleep mode for low power consumption
    • 350-nA output leakage current
    • 2-µA input leakage current when charge disabled
  • Support 1- to 4-cell supercapacitor charging from 0 V
  • External resistor programmable operation
    • FB pin to adjust supercapacitor regulation voltage
    • ISET to set charge current from 10 mA to 800 mA
  • High accuracy
    • ±1% charge voltage accuracy
    • ±10% charge current accuracy
  • Charging features
    • CE pin for charging function control
    • Open-drain output for status and fault indication
    • Open-drain output for power-good indication
  • Integrated fault protection
    • 18-V IN overvoltage protection
    • 1000-mA overcurrent protection
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • ISET pin short protection

The BQ25173-Q1 is an automotive rated, 800-mA linear charger for 1- to 4-cell supercapacitors targeted at space-limited applications. The device has a single power output that charges the supercapacitor. The system load can be placed in parallel with the supercapacitor and the charge current is shared between the system and supercapacitor.

During charging, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold, T REG, is exceeded. This feature allows for fast charging of a fully discharged supercapacitor.

The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge function control. The charge voltage and fast-charge current are programmable through external resistors.

The BQ25173-Q1 is an automotive rated, 800-mA linear charger for 1- to 4-cell supercapacitors targeted at space-limited applications. The device has a single power output that charges the supercapacitor. The system load can be placed in parallel with the supercapacitor and the charge current is shared between the system and supercapacitor.

During charging, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold, T REG, is exceeded. This feature allows for fast charging of a fully discharged supercapacitor.

The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge function control. The charge voltage and fast-charge current are programmable through external resistors.
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Type Title Date
* Data sheet BQ25173-Q1 Automotive, Standalone 800-mA Linear Battery Charger for 1- to 4-Cell Supercapacitor datasheet PDF | HTML 31 Jul 2023
EVM User's guide BQ25173-Q1 EVM User's Guide PDF | HTML 15 Aug 2023
Certificate BQ25173Q1EVM EU Declaration of Conformity (DoC) 14 Aug 2023

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

BQ25173EVM — BQ25173 evaluation module 800-mA linear charger for 1-cell to 4-cell super capacitor

The BQ25173EVM evaluation module (EVM) is designed to help evaluate and test the various operating modes of the BQ25173, a linear charger IC for 1-cell to 4-cell super capacitor. Charging voltage can be adjusted using external resistor divider between OUT and FB. Charging current can be set from 10 (...)

User guide: PDF
Not available on TI.com
Evaluation board

BQ25173Q1EVM — BQ25173-Q1 evaluation module for 800-mA linear charger for 1-S to 4-S supercapacitor

This evaluation module is designed to evaluate and test the various operating modes of the BQ25173-Q1 devices.

User guide: PDF | HTML
Not available on TI.com
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VSON (DRC) 10 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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