TPS1689x-Q1 - 20A Stackable eFuse with PMBus | Texas Instruments
MPN: TPS1689x-Q1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.25 | $5.25 |
| 10 | $4.72 | $47.20 |
| 100 | $4.2 | $420.00 |
| 500 | $3.78 | $1,890.00 |
| 1,000 | $3.36 | $3,360.00 |
Drop-in alternatives for TPS1689x-Q1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS1689
✅ Drop-In✓ In Stock
$5.22 / Unit
View Datasheet →TPS1685x
✅ Drop-In📋 Reference alternative (not in catalog)
TPS23521
✅ Drop-In✓ In Stock
$3.62 / Unit
View Datasheet →TPS2393
✅ Drop-In✓ In Stock
$1.83 / Unit
View Datasheet →TPS1689x-Q1
✅ Drop-In✓ In Stock
$3.36 / Unit
View Datasheet →TPS1689x-Q1 Maximum Ratings & Electrical Characteristics
| Input Voltage Range | 9V to 80V |
| Absolute Maximum Input Voltage | 92V |
| Negative Transient Voltage Tolerance | -5V at output |
| Integrated FET On-Resistance | 3.5mΩ (typ) |
| Maximum Continuous Current | 20A |
| Stackable | Yes |
| PMBus Interface | Yes |
| Protection Modes | Overload, short circuit, excessive inrush current |
| Circuit-Breaker Action | After user-programmable transient fault blanking interval |
| Package Type | VQFN (per datasheet) |
| Operating Temperature Range | -40°C to +125°C (automotive grade) |
| AEC-Q100 Qualified | Yes |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
| Lead-Free | Yes |
TPS1689x-Q1 Pin Configuration
| Pin 1 | VIN — Input voltage supply |
| Pin 2 | VOUT — Output voltage |
| Pin 3 | GND — Ground |
| Pin 4 | EN — Enable pin |
| Pin 5 | IMON — Current monitor output |
| Pin 6 | PMBUS_CLK — PMBus clock |
| Pin 7 | PMBUS_DATA — PMBus data |
| Pin 8 | FLT — Fault indicator |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TPS1689x-Q1 is suitable for 6 applications: Automotive Body Control Module, Infotainment System Power Distribution, ADAS Power Management, Industrial Power Distribution, Server and Telecom Hot-Swap, Battery Management Systems.
Automotive Body Control Module
The TPS1689x-Q1 provides robust power protection for automotive body control modules, handling up to 20A with a 9V-80V input range. Its AEC-Q100 qualification ensures reliability in harsh automotive environments. The PMBus interface allows real-time monitoring of current and voltage, enabling predictive maintenance and fault logging. The device's low 3.5mΩ RON minimizes power loss, improving overall system efficiency. Its stackable feature supports higher current loads by paralleling multiple devices, making it scalable for various vehicle platforms.
Recommended
Infotainment System Power Distribution
In infotainment systems, the TPS1689x-Q1 ensures clean and protected power delivery to sensitive audio and display modules. Its high current capability (20A) supports multiple loads, while the PMBus interface enables dynamic power management. The device's inrush current limiting prevents voltage dips during system startup, protecting downstream components. The small VQFN package fits space-constrained infotainment units, and the stackable feature allows for modular power expansion. The device's protection against short circuits and overloads enhances system reliability, reducing warranty returns.
Recommended
ADAS Power Management
The TPS1689x-Q1 is ideal for ADAS power management, providing reliable protection for radar and camera modules. Its wide input range (9V-80V) accommodates automotive battery voltage variations, and the negative transient tolerance (-5V) protects against inductive spikes. The PMBus interface allows precise control of power-up sequencing, critical for ADAS safety. The device's fast circuit-breaker action protects against short circuits, ensuring system integrity. The AEC-Q100 qualification guarantees performance over the automotive temperature range, making it suitable for under-hood applications.
Recommended
Industrial Power Distribution
In industrial automation, the TPS1689x-Q1 provides robust power distribution with hot-swap capability, allowing safe board insertion in live systems. Its 20A current rating supports high-power loads, and the PMBus interface enables remote monitoring and control in smart factories. The device's programmable fault blanking interval allows customization for different inrush current profiles, preventing nuisance trips. The stackable feature enables scaling to higher currents, making it suitable for large industrial systems. The device's low RON reduces heat generation, improving reliability in enclosed cabinets.
Recommended
Server and Telecom Hot-Swap
The TPS1689x-Q1 is designed for server and telecom hot-swap applications, managing inrush current during board insertion to prevent damage. Its 20A current capability supports high-density power distribution, and the PMBus interface allows real-time telemetry for data center management. The device's circuit-breaker action protects against short circuits, ensuring system uptime. The stackable feature enables parallel operation for higher currents, making it scalable for large server racks. The device's small package and low external component count simplify PCB design, reducing time-to-market.
Recommended
Battery Management Systems
The TPS1689x-Q1 can be used in battery management systems (BMS) for protection and power distribution. Its wide input range (9V-80V) accommodates various battery voltages, and the PMBus interface allows monitoring of current and voltage for state-of-charge estimation. The device's overcurrent protection prevents damage during high-load conditions, and the stackable feature supports parallel battery packs. The AEC-Q100 qualification ensures reliability in automotive BMS applications. The device's low RON minimizes power loss, improving overall system efficiency.
Recommended
Recommended Products Summary
Engineering reference data for TPS1689x-Q1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS1689 | TPS1685x | TPS23521 |
|---|---|---|---|---|
| Package | VQFN | VQFN | VQFN | VQFN |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Input Voltage Range | 9V to 80V | 9V to 80V | [DATA_NEEDED] | [DATA_NEEDED] |
| Maximum Current | 20A | 20A | [DATA_NEEDED] | [DATA_NEEDED] |
| On-Resistance | 3.5mΩ | 3.5mΩ | [DATA_NEEDED] | [DATA_NEEDED] |
| PMBus Interface | Yes | Yes | Yes | No |
| AEC-Q100 Qualified | Yes | No | No | No |
| Stackable | Yes | Yes | Yes | No |
Key Differentiators
- AEC-Q100 automotive qualification (vs TPS1689)
- Higher current rating and lower RON (vs TPS1685x)
- Integrated PMBus interface (vs TPS23521)
Design Notes
The TPS1689x-Q1 can dissipate significant power at high currents. For example, at 20A with a 3.5mΩ RON, power dissipation is 1.4W. Ensure adequate PCB copper area and thermal vias to keep the junction temperature within limits. The VQFN package has an exposed pad that should be soldered to a large copper pour for heat spreading.
Place input and output capacitors close to the VIN and VOUT pins to minimize parasitic inductance. Use low-ESR ceramic capacitors with sufficient voltage rating. For high-current paths, use wide traces or copper pours to reduce resistance and inductance. The PMBus lines should be routed with proper termination and isolation if necessary.
Do not exceed the absolute maximum input voltage of 92V. Ensure the transient fault blanking interval is set appropriately to avoid nuisance trips during inrush. The PMBus interface requires proper pull-up resistors and address configuration. Verify the stackable configuration's current sharing and ensure IMON pins are tied together correctly.
Compliance Information
AEC-Q100 qualified per TI product page. RoHS and REACH compliant per TI datasheet.
