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TPS1689

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9V to 80V, 3.5mΩ, 20A stackable integrated hot swap (eFuse) with PMBus digital telemetry

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Data sheet

TPS1689

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Product details

Vabsmax_cont (V) 92 Vin (max) (V) 80 Vin (min) (V) 9 Current limit (max) (A) 20 Current limit (min) (A) 2 Features Adjustable current limit, Adjustable soft start, Current monitoring, Fault output, Overcurrent protection, Overvoltage protection, PMBus, Power good signal, Short-circuit protection, Thermal shutdown Overcurrent response Circuit breaker Fault response Auto-retry, Latch-off Ron (typ) (mΩ) 3.5 Overvoltage response Cut-off Rating Catalog Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.004 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125
Vabsmax_cont (V) 92 Vin (max) (V) 80 Vin (min) (V) 9 Current limit (max) (A) 20 Current limit (min) (A) 2 Features Adjustable current limit, Adjustable soft start, Current monitoring, Fault output, Overcurrent protection, Overvoltage protection, PMBus, Power good signal, Short-circuit protection, Thermal shutdown Overcurrent response Circuit breaker Fault response Auto-retry, Latch-off Ron (typ) (mΩ) 3.5 Overvoltage response Cut-off Rating Catalog Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.004 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125
LQFN-CLIP (VMA) 23 30 mm² 5 x 6
  • Input operating voltage range: 9V to 80V
    • 92V absolute maximum rating
    • Withstands negative transient voltages up to –5V at output
  • Integrated FET with low ON-resistance
    • RON = 3.5mΩ (typ)
  • PMBus interface for telemetry, control, configuration, and debug
    • PIN/EIN/VIN/VOUT/IIN temperature and fault monitoring
    • VIN/VOUT monitoring accuracy: ±0.5%
    • Programmable overcurrent protection
      • Adjustable overcurrent threshold: 2A to 20A
      • Programmable transient overcurrent timer (OC_TIMER)
    • Programmable slew rate control (dvdt)
    • Programmable Power Good/fault/alert indication
    • Programmable overtemperature protection
    • Internal non-volatile memory for user configuration
    • Blackbox fault recording with option to store in external EEPROM
  • Fast trip response to severe overcurrent (short-circuit) events
  • Precise analog load current monitoring (IMON)
    • <1% error over 50% to 100% of max current

      (TA = 25°C)

  • Small footprint: QFN 6mm × 5mm
    • IPC9592B clearance for 60V
  • Input operating voltage range: 9V to 80V
    • 92V absolute maximum rating
    • Withstands negative transient voltages up to –5V at output
  • Integrated FET with low ON-resistance
    • RON = 3.5mΩ (typ)
  • PMBus interface for telemetry, control, configuration, and debug
    • PIN/EIN/VIN/VOUT/IIN temperature and fault monitoring
    • VIN/VOUT monitoring accuracy: ±0.5%
    • Programmable overcurrent protection
      • Adjustable overcurrent threshold: 2A to 20A
      • Programmable transient overcurrent timer (OC_TIMER)
    • Programmable slew rate control (dvdt)
    • Programmable Power Good/fault/alert indication
    • Programmable overtemperature protection
    • Internal non-volatile memory for user configuration
    • Blackbox fault recording with option to store in external EEPROM
  • Fast trip response to severe overcurrent (short-circuit) events
  • Precise analog load current monitoring (IMON)
    • <1% error over 50% to 100% of max current

      (TA = 25°C)

  • Small footprint: QFN 6mm × 5mm
    • IPC9592B clearance for 60V

The TPS1689x is an integrated high current circuit protection and power management solution in a small package. The device provides multiple protection modes using very few external components and is a robust defense against overloads, short circuits and excessive inrush current. The integrated PMBus interface allows a host controller to monitor, control and configure the system in real-time. Key system parameters can be read back for remote telemetry. Various protection/warning thresholds and coefficients can be configured through PMBus or stored in non-volatile configuration memory. An integrated fast and accurate sense analog load current monitor facilitates predictive maintenance and advanced dynamic platform power management such as Intel PSYS and PROCHOT to optimize server and data-center performance. Blackbox fault recording feature helps in debug of field failure/returns. For higher current support, TPS1689x can be connected in parallel with TPS1685x. The devices are characterized for operation over a junction temperature range of –40°C to +125°C.

The TPS1689x is an integrated high current circuit protection and power management solution in a small package. The device provides multiple protection modes using very few external components and is a robust defense against overloads, short circuits and excessive inrush current. The integrated PMBus interface allows a host controller to monitor, control and configure the system in real-time. Key system parameters can be read back for remote telemetry. Various protection/warning thresholds and coefficients can be configured through PMBus or stored in non-volatile configuration memory. An integrated fast and accurate sense analog load current monitor facilitates predictive maintenance and advanced dynamic platform power management such as Intel PSYS and PROCHOT to optimize server and data-center performance. Blackbox fault recording feature helps in debug of field failure/returns. For higher current support, TPS1689x can be connected in parallel with TPS1685x. The devices are characterized for operation over a junction temperature range of –40°C to +125°C.

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Type Title Date
* Data sheet TPS1689x 9V to 80V, 3.5mΩ, 20A Stackable Integrated Hotswap (eFuse) With PMBus Digital Telemetry datasheet (Rev. A) PDF | HTML 11 Dec 2025
Application note Active Current Sharing: Advanced Current Distribution Feature From TI's Smart eFuses PDF | HTML 09 May 2025
Application note Enhancing Server Power Design Using Advanced Features of TI’s Smart eFuses PDF | HTML 29 Jan 2025
Certificate TPS1689EVM EU Declaration of Conformity (DoC) 31 Oct 2024

Design & development

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

Evaluation board

TPS1689EVM — TPS1689 evaluation module

The TPS1685EVM is used to evaluate the performance of the TPS1685 eFuse device. The TPS1685EVM comes with two TPS16851 eFuses connected in parallel to evaluate a 54V (typical) and 40A (steady state) design. This evaluation module incorporates two TPS16851 devices in parallel, which supports a 2kW (...)
User guide: PDF | HTML
Not available on TI.com
GUI for evaluation module (EVM)

TPS1689-EVM-GUI — TPS1689 evaluation module GUI

The GUI allows the customer to configure, control, and view telemetry data from the TPS1689 eFuse.
Supported products & hardware

Supported products & hardware

Products
eFuses (integrated hot swaps)
  • TPS1689 — 9V to 80V, 3.5mΩ, 20A stackable integrated hot swap (eFuse) with PMBus digital telemetry
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Simulation model

TPS1685 PSpice Transient Model

SLVMED5.ZIP (68 KB) - PSpice Model
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Simulation model

TPS16851 PSpice Transient Model

SLVMED3.ZIP (66 KB) - PSpice Model
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Calculation tool

TPS1689-CALC — TPS1689 Design Calculator

The design calculator allows customer to size the external peripheral components while designing with TPS1689 eFuse.
Supported products & hardware

Supported products & hardware

Products
eFuses (integrated hot swaps)
  • TPS1689 — 9V to 80V, 3.5mΩ, 20A stackable integrated hot swap (eFuse) with PMBus digital telemetry
Download
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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LQFN-CLIP (VMA) 23 Ultra Librarian
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