Product details

Number of series cells 1 Charge current (Max) (A) 0.8 Operating Vin (Max) (V) 6.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 4.35 Battery charge voltage (Max) (V) 4.35 Absolute Vin (safety rating) (Max) ((V)) 30 Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation Operating Vin (Min) (V) 3 Rating Catalog
Number of series cells 1 Charge current (Max) (A) 0.8 Operating Vin (Max) (V) 6.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 4.35 Battery charge voltage (Max) (V) 4.35 Absolute Vin (safety rating) (Max) ((V)) 30 Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (JEITA profile), IC thermal regulation Operating Vin (Min) (V) 3 Rating Catalog
DSBGA (YBG) 6
  • Input voltage up to 30-V tolerant
  • Automatic Sleep Mode for low power consumption
    • 350-nA battery leakage current
    • 80-µA input leakage current when charge disabled
  • Supports 1-cell Li-Ion, and Li-Poly
  • Fixed 4.35-V battery regulation voltage

  • External resistor programmable operation
    • ISET to set charge current from 10 mA to 800 mA
  • High accuracy
    • ±0.5% charge voltage accuracy
    • ±10% charge current accuracy
  • Charging features
    • Precharge current 20% of ISET
    • Termination current 10% of ISET
    • NTC thermistor input to monitor battery temperature
    • Cold and hot temperature charging disabled
    • Cool temperature charging at 20% of ISET
    • TS pin for charging function control
    • Open-drain output for status and fault indication
  • Integrated fault protection
    • 6.6-V IN overvoltage protection
    • 1000-mA overcurrent protection
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • OUT short-circuit protection
    • ISET pin short/open protection
  • Input voltage up to 30-V tolerant
  • Automatic Sleep Mode for low power consumption
    • 350-nA battery leakage current
    • 80-µA input leakage current when charge disabled
  • Supports 1-cell Li-Ion, and Li-Poly
  • Fixed 4.35-V battery regulation voltage

  • External resistor programmable operation
    • ISET to set charge current from 10 mA to 800 mA
  • High accuracy
    • ±0.5% charge voltage accuracy
    • ±10% charge current accuracy
  • Charging features
    • Precharge current 20% of ISET
    • Termination current 10% of ISET
    • NTC thermistor input to monitor battery temperature
    • Cold and hot temperature charging disabled
    • Cool temperature charging at 20% of ISET
    • TS pin for charging function control
    • Open-drain output for status and fault indication
  • Integrated fault protection
    • 6.6-V IN overvoltage protection
    • 1000-mA overcurrent protection
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • OUT short-circuit protection
    • ISET pin short/open protection

The BQ25175 is an integrated 800-mA linear charger for 1-cell Li-Ion and Li-Poly batteries. The device has a single power output that charges the battery. The system load can be placed in parallel with the battery, as long as the average system load does not prevent the battery from charging fully within the safety timer duration. When the system load is placed in parallel with the battery, the charge current is shared between the system and the battery.

The device has three phases for charging a Li-Ion/Li-Poly battery: precharge to recover a fully discharged battery, fast-charge constant current to supply the bulk of the charge, and voltage regulation to reach full capacity.

In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold, TREG, is exceeded.

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 automatic charge termination. The fast charge current is programmable through an external resistor. The precharge and termination current thresholds track the fast charge current setting.

The BQ25175 is an integrated 800-mA linear charger for 1-cell Li-Ion and Li-Poly batteries. The device has a single power output that charges the battery. The system load can be placed in parallel with the battery, as long as the average system load does not prevent the battery from charging fully within the safety timer duration. When the system load is placed in parallel with the battery, the charge current is shared between the system and the battery.

The device has three phases for charging a Li-Ion/Li-Poly battery: precharge to recover a fully discharged battery, fast-charge constant current to supply the bulk of the charge, and voltage regulation to reach full capacity.

In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold, TREG, is exceeded.

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 automatic charge termination. The fast charge current is programmable through an external resistor. The precharge and termination current thresholds track the fast charge current setting.

Download

Similar products you might be interested in

open-in-new Compare products
Same functionality with different pin-out to the compared device.
BQ25100 ACTIVE Standalone 1-cell, 250-mA linear battery charger with 4.2-V charge voltage and prog. pre-charge Supports lower BAT IQ.
NEW BQ25170 ACTIVE 800-mA linear battery charger for 1-cell Li-ion and LiFePO4 Support Li-ion and LiFePO4 battery chemistries.
NEW BQ25170J ACTIVE 800-mA JEITA-compliant linear battery charger for 1-cell Li-Ion and LiFePO4 This part is in a WCSP package.

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 7
Type Title Date
* Data sheet BQ25175 Standalone 1-Cell 800-mA Linear Battery Charger with 4.35-V Charge Voltage and Charging Indication datasheet (Rev. A) 23 Sep 2021
Application note BQ25171-Q1 Quick Start Guide 29 Sep 2021
User guide BQ25175EVM User's Guide 26 May 2021
Certificate BQ25175EVM EU RoHS Declaration of Conformity (DoC) 21 May 2021
Technical article When to use rechargeable batteries in small battery applications 01 Oct 2019
Technical article Should I use a linear charger or a switching charger? 31 Oct 2015
Technical article Summertime and the livin' is easy 20 Jun 2014

Design & development

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

Evaluation board

BQ25175EVM — BQ25175 evaluation module 800-mA linear battery charger for 1-cell Li-ion

The BQ25175EVM evaluation module (EVM) is designed to evaluate and test the various operating modes of the BQ25175, a Li-ion and Li-poly chemistry battery charger IC for 4.35-V single cell. Charging current can be set from 60 mA to 600 mA with external resistor on ISET.
In stock
Limit: 1
Package Pins Download
DSBGA (YBG) 6 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos