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Product attributes Property Value
Manufacturer Texas Instruments
Product Series
Packaging Cut Tape (CT) | Tape & Reel (TR)
Battery Chemistry Supercapacitor
Number of Cells 1 ~ 4
Current - Charging Constant - Programmable
Programmable Features Current, Voltage
Fault Protection Over Current, Over Voltage, Short Circuit
Charge Current - Max 800mA
Battery Pack Voltage 10.5V (Max)
Voltage - Supply (Max) 18V
Interface -
Operating Temperature -40°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 8-WFDFN Exposed Pad
Supplier Device Package 8-WSON (2x2)

The BQ25173DSGR from Texas Instruments is a specialized linear charger designed for 1 to 4 series supercapacitors. It delivers a charge current up to 800mA and supports a maximum pack voltage of 10.5V. The device integrates overcurrent, overvoltage, and short-circuit protection. Operating over a junction temperature range of -40°C to 125°C and housed in an 8-WFDFN package, it is engineered for demanding backup power and energy storage applications.

  • Purpose-Built for Supercapacitors: Optimized charging algorithm for 1-4 series supercapacitor stacks.
  • High Voltage Support: Handles pack voltages up to 10.5V, enabling multi-cell configurations.
  • Robust Protection: Includes Over Current, Over Voltage, and Short Circuit protection for system safety.
  • Wide Temperature Range: Operates from -40°C to 125°C, suitable for automotive and industrial environments.

Backup Power Systems

For RAID controllers and industrial PCs, this charger manages supercapacitor banks (1-4 cells) to provide backup power during sudden power loss, with up to 10.5V support.

Energy Harvesting Systems

In solar or vibration-based energy harvesting, the BQ25173DSGR efficiently charges supercapacitors to store intermittent energy for later use.

Automotive Black Boxes

Its -40°C to 125°C temperature range makes it suitable for automotive event data recorders that rely on supercapacitors for emergency power.

Smart Meters

For utility smart meters, this charger maintains a supercapacitor charge to enable wireless communication even during grid outages.

Portable Power Tools

In power tools with supercapacitor-assisted starting, this IC provides a robust charging solution with overcurrent and short-circuit protection.

Q: What is the BQ25173DSGR designed to charge?
A: It is specifically designed for Supercapacitor charging.
Q: How many cells or supercapacitors can it support?
A: It supports 1 to 4 cells in series.
Q: What is the maximum charge current?
A: The maximum charge current is 800mA.
Q: What is the maximum battery pack voltage?
A: The maximum battery pack voltage is 10.5V.
Q: What fault protections are included?
A: It includes Over Current, Over Voltage, and Short Circuit protection.
Q: What is the operating temperature range?
A: It operates over a junction temperature range of -40°C to 125°C.
Base Product Number : BQ25173
10.5V 8-WFDFN 800mA Battery Charger Supercapacitor Supercapacitor Charger Texas Instruments
Q: What is the BQ25173DSGR designed to charge?
A: It is specifically designed for Supercapacitor charging.
Q: How many cells or supercapacitors can it support?
A: It supports 1 to 4 cells in series.
Q: What is the maximum charge current?
A: The maximum charge current is 800mA.
Q: What is the maximum battery pack voltage?
A: The maximum battery pack voltage is 10.5V.
Q: What fault protections are included?
A: It includes Over Current, Over Voltage, and Short Circuit protection.
Q: What is the operating temperature range?
A: It operates over a junction temperature range of -40°C to 125°C.