TPS1689 - 20A Stackable eFuse with PMBus | Texas Instruments
MPN: TPS1689 β 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 TPS1689 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TPS1685
β Drop-Inπ Reference alternative (not in catalog)
TPS25982
β Drop-Inπ Reference alternative (not in catalog)
TPS25985
β Drop-Inπ Reference alternative (not in catalog)
TPS25986
β Drop-Inπ Reference alternative (not in catalog)
TPS25987
β Drop-Inπ Reference alternative (not in catalog)
TPS25988
β Drop-Inπ Reference alternative (not in catalog)
TPS25989
β Drop-Inπ Reference alternative (not in catalog)
TPS25990
β Drop-Inπ Reference alternative (not in catalog)
TPS1689 Maximum Ratings & Electrical Characteristics
| Input Voltage Range | 9V to 80V |
| Absolute Maximum Input Voltage | 92V |
| Negative Transient Voltage | -5V at output |
| On-Resistance (RON) | 3.5mΞ© (typ) |
| Maximum Continuous Current | 20A |
| PMBus Interface | Yes |
| Stackable | Yes |
| Protection Modes | Overload, short circuit, inrush current |
| Package Type | [DATA_NEEDED: package type] |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
| Number of Pins | [DATA_NEEDED: number of pins] |
| Quiescent Current | [DATA_NEEDED: quiescent current] |
| Thermal Shutdown | Yes |
TPS1689 [data_needed: package type] Pin Configuration Guide
Complete pinout information for TPS1689 ([data_needed: package type] package) with [DATA_NEEDED: number of pins] pins. This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
![[data_needed: package type] package pinout diagram for TPS1689](/assets/package-diagrams/default.svg?v=1787415439)
No detailed pinout data available for TPS1689.
Refer to the datasheet for full pin configuration.
Estimated pin count: [DATA_NEEDED: number of pins] pins (power package)
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
TPS1689 is suitable for 6 applications: Hot-Swap Power Supplies, Datacenter Power Distribution, Industrial Automation, Telecom Equipment, Server Power Management, Battery-Powered Systems.
Hot-Swap Power Supplies
The TPS1689 is ideal for hot-swap power supplies in servers and datacenters, providing inrush current limiting and short-circuit protection. Its 9V to 80V input range and 20A current capability ensure reliable operation in 48V backplane systems. The PMBus telemetry enables real-time monitoring of current and voltage, allowing system-level power management and fault detection. With a low RON of 3.5mΞ©, power dissipation is minimized, improving efficiency and reducing thermal stress. The stackable feature allows paralleling multiple devices for higher current, making it scalable for high-power applications.
Recommended
Datacenter Power Distribution
In datacenter power distribution, the TPS1689 protects against overloads and short circuits in 48V distribution buses. Its high current rating of 20A and low RON of 3.5mΞ© minimize losses, while the PMBus interface allows centralized monitoring and control. The device's ability to withstand -5V transients ensures robustness in noisy environments. Stackable operation enables scaling to higher currents, making it suitable for rack-level power distribution. The integrated protection modes reduce the need for external components, simplifying design and improving reliability.
Recommended
Industrial Automation
The TPS1689 is well-suited for industrial automation systems that require robust circuit protection. Its wide input voltage range of 9V to 80V accommodates various industrial supply rails, while the 20A current rating handles high-power loads. The PMBus telemetry enables remote monitoring and diagnostics, improving system maintainability. The device's protection against overloads, short circuits, and inrush current ensures safe operation in harsh environments. The stackable feature allows designers to scale current capability without redesigning the PCB, providing flexibility for different automation modules.
Recommended
Telecom Equipment
In telecom equipment, the TPS1689 provides reliable hot-swap protection for line cards and power modules. Its 9V to 80V input range covers standard telecom voltages like 48V, and the 20A current rating supports high-power line cards. The PMBus interface allows integration with system management controllers for real-time monitoring. The device's low RON reduces power loss, improving efficiency in space-constrained telecom enclosures. The ability to withstand negative transients ensures reliable operation in environments with ground bounce or inductive spikes.
Recommended
Server Power Management
The TPS1689 is ideal for server power management, providing hot-swap protection for server power supplies and backplanes. Its high current rating of 20A and low RON of 3.5mΞ© ensure efficient power delivery to high-performance processors. The PMBus telemetry enables real-time monitoring of power consumption, allowing dynamic power management and thermal optimization. The device's protection features prevent damage from overloads and short circuits, enhancing system reliability. The stackable feature allows designers to parallel multiple devices for higher current, supporting future server generations with increased power demands.
Recommended
Battery-Powered Systems
The TPS1689 can be used in battery-powered systems for protection against overcurrent and short circuits. Its wide input range of 9V to 80V makes it suitable for various battery chemistries, including Li-ion and lead-acid. The low RON of 3.5mΞ© minimizes voltage drop, maximizing battery life. The PMBus interface allows monitoring of battery current and voltage, enabling accurate state-of-charge estimation. The device's protection features prevent damage from fault conditions, extending battery life and improving safety.
Recommended
Recommended Products Summary
Engineering reference data for TPS1689 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS1685 | TPS25982 | TPS25985 |
|---|---|---|---|---|
| Input Voltage Range | 9V to 80V | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Maximum Current | 20A | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| On-Resistance | 3.5mΞ© | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| PMBus Interface | Yes | Yes | Yes | Yes |
| Stackable | Yes | Yes | Yes | Yes |
| Package | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Protection Modes | Overload, short circuit, inrush | Overload, short circuit, inrush | Overload, short circuit, inrush | Overload, short circuit, inrush |
Key Differentiators
- 20A high current rating (vs TPS1685)
- PMBus digital telemetry (vs TPS25982)
- Stackable design (vs TPS25985)
Design Notes
At 20A and 3.5mΞ© RON, power dissipation is approximately 1.4W. Ensure adequate PCB copper area and thermal vias to keep junction temperature within limits. Refer to the TI datasheet for thermal resistance values and recommended layout.
Place input and output capacitors close to the device pins to minimize parasitic inductance. Use low-ESR ceramic capacitors for high-frequency decoupling. Follow the layout guidelines in the datasheet to ensure stable operation and accurate current sensing.
Do not exceed the absolute maximum input voltage of 92V. Ensure the PMBus address is correctly configured to avoid communication conflicts. Verify the current limit setting matches the application requirements to prevent nuisance trips.
Compliance Information
RoHS compliant per TI product page. Other compliance data not specified in provided sources.
