TPS26633PWPR - 60V 6A eFuse HTSSOP-20 | Texas Instruments
MPN: TPS26633PWPR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.35 | $335.00 |
| 500 | $2.99 | $1,495.00 |
| 1,000 | $2.65 | $2,650.00 |
| 2,500 | $2.4 | $6,000.00 |
TPS26633PWPR Overview
An eFuse (electronic fuse) is a semiconductor-based circuit protection device that replaces traditional mechanical fuses, PTCs, and discrete hot-swap circuits. It combines a power MOSFET, current-sense amplifier, and control logic in one IC, sitting in the power management hierarchy between discrete MOSFETs and full system PMICs. Compared with a PTC or polyfuse, an eFuse offers precise, programmable current limit, fast fault response, and automatic retry, and it does not require physical replacement after a trip event.
Key features of the TPS26633PWPR include 4.5V to 60V operating range, integrated 31mΩ RON hot-swap FET, 0.6A to 6A adjustable current limit with ±7% accuracy, output power limiting for surge compliance, reverse current blocking, fault output indicator, and thermal shutdown. The HTSSOP-20 PowerPAD package provides a low thermal resistance path for sustained 6A operation, and the device operates from -40C to +125C junction temperature.
The device uses TI's hot-swap controller architecture with charge-pump gate drive and precision current sensing, providing monotonic dV/dt controlled startup to limit inrush current. The output power-limit feature clamps transient power to a programmed threshold for IEC 61000-4-5 surge compliance, while the timer-based fault response prevents nuisance tripping on capacitive loads.
Typical applications include industrial PLC I/O protection, 24V factory automation power rails, motor-drive auxiliary supplies, building-automation controllers, and telecom 48V line-card protection. The wide input range makes it well suited for systems powered from 24V industrial buses or 48V PoE/PoE+ sources where input transients and reverse-wiring events are common.
When designing with the TPS26633PWPR, place input and output bulk capacitors close to the IC, connect the PowerPAD to a 1-square-inch copper pour, and program the current limit with a 1% resistor to achieve the ±7% accuracy. Always verify SOA under worst-case VIN and I²t conditions in the datasheet.
This page synthesizes distributor pricing, drop-in HTSSOP-20 alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for TPS26633PWPR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TPS26633PWPR (same form factor and footprint) — differing in Output Power Limiting, Package, Thermal Shutdown, Surge Protection, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS26630PWPR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS26631PWPR
✅ Drop-In✓ In Stock
$2.72 / Unit
View Datasheet →TPS26632PWPR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS26634PWPR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS26635PWPR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS26636PWPR
✅ Drop-In✓ In Stock
$2.54 / Unit
View Datasheet →TPS26637PWPR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS26600PWPR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS26633PWPR Specifications
| Operating Voltage Range | 4.5 V to 60 V |
| Absolute Maximum Input Voltage | 67 V |
| Integrated Hot-Swap FET RON | 31 mΩ |
| Adjustable Current Limit | 0.6 A to 6 A |
| Current Limit Accuracy | ±7% |
| Output Power Limiting | Yes (programmable) |
| Reverse Polarity Protection | Yes (with external N-FET) |
| Reverse Current Blocking | Yes |
| Fault Output (FLT) | Active low, open-drain |
| Thermal Shutdown | Yes |
| Operating Temperature Range | -40 C to +125 C |
| Package | HTSSOP-20 (PWP) with PowerPAD |
| Pin Count | 20 |
| Mounting Type | Surface Mount |
| MSL Level | 2 (1 year floor life) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
TPS26633PWPR Pin Configuration
| Pin 1 | FLT — Fault indicator output, active-low open-drain |
| Pin 2 | ILIM — Current-limit programming resistor |
| Pin 3 | PLIM — Power-limit programming resistor |
| Pin 4 | OVLO — Overvoltage lockout programming input |
| Pin 5 | UVLO — Undervoltage lockout programming input |
| Pin 6 | EN/UVLO — Enable / undervoltage lockout |
| Pin 7 | PGOOD — Power-good indicator, open-drain |
| Pin 8 | TIMER — Fault timer capacitor |
| Pin 9 | dV/dt — Soft-start programming capacitor |
| Pin 10 | GND — Ground reference |
| Pin 11 | IN — Input supply voltage |
| Pin 12 | OUT — Output to load |
| Pin 13 | SENSE — Current sense input |
| Pin 14 | GDRV — External gate drive (reverse polarity FET) |
| Pin 15 | NC — Not connected (per datasheet) |
| Pin 16 | NC — Not connected (per datasheet) |
| Pin 17 | NC — Not connected (per datasheet) |
| Pin 18 | NC — Not connected (per datasheet) |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | NC — Not connected (per datasheet) |
TPS26633PWPR Safe Operating Area
Typical Applications
TPS26633PWPR is suitable for 6 applications: Industrial 24V PLC I/O Protection, Factory Automation Motor Drive Auxiliary Power, Building Automation Controller Power Input, Telecom 48V Line Card Hot Swap, Solar Inverter DC Combiner Protection, Battery Management System Precharge Circuit.
Industrial 24V PLC I/O Protection
The TPS26633PWPR protects PLC digital I/O modules and analog input cards on 24V industrial factory-automation buses. Its 4.5V to 60V operating range tolerates 24V nominal plus transient overshoot, and the 31mΩ integrated FET limits steady-state dissipation at module loads up to 6A. Output power limiting complies with IEC 61000-4-5 surge tests, while the FLT pin drives a PLC diagnostic input for fault telemetry. Use a TVS such as SMAJ33CA on the input and 100uF bulk capacitance on the output for hot-swap inrush control.
Recommended
Factory Automation Motor Drive Auxiliary Power
On AC inverter and servo drive auxiliary rails (24V fan, brake, control power), the TPS26633PWPR provides hot-swap inrush control and short-circuit protection. The 6A limit covers auxiliary loads including cooling fans and relay coils, while reverse-polarity protection with an external N-FET guards against wiring errors during field installation. The exposed PowerPAD sustains 6A continuous on a 1-square-inch PCB pour. Add a reverse-blocking N-FET such as CSD18531Q5A on the input side for full polarity protection.
Recommended
Building Automation Controller Power Input
HVAC controllers, security panels, and access-control systems powered from 24VAC rectified DC rails benefit from the TPS26633PWPR's wide input range and reverse-current blocking. The 0.6A to 6A adjustable limit lets designers size protection to the specific load, while the fault output drives an LED or microcontroller interrupt for status reporting. Operating from -40C to +125C junction, the device handles outdoor enclosure thermal stress. Pair with an isolation transformer and TVS for EN 50130-4 alarm-system compliance.
Recommended
Telecom 48V Line Card Hot Swap
For -48V telecom rectifier buses (positive 48V), the TPS26633PWPR handles the full operating range with margin and provides controlled startup for hot-insertion into a backplane. The 67V absolute maximum tolerates load-dump transients, while the integrated 31mΩ FET minimizes voltage drop at 6A (only 186mV). Reverse-current blocking prevents backfeeding from downstream holdup capacitors during card removal, meeting NEBS telecom reliability requirements. Use 220uF output capacitance for stable startup.
Recommended
Solar Inverter DC Combiner Protection
In residential and commercial PV combiner boxes, the TPS26633PWPR protects downstream MPPT and inverter electronics from string reverse-current faults. Its 60V rating covers open-circuit PV string voltages up to 1500V systems when paired with string fusing, and the 6A continuous rating handles combiner-box loads. The integrated reverse-current blocking simplifies arc-fault detection circuit integration. Use flame-retardant HTSSOP-20 PCB materials per UL 1741 for PV safety compliance.
Recommended
Battery Management System Precharge Circuit
In 24V to 48V battery management systems (e.g., e-mobility, UPS), the TPS26633PWPR functions as a precharge and disconnect eFuse. During battery insertion, the device limits inrush current to a programmed value to precharge bulk capacitors, then operates in continuous mode for normal load. The FLT output signals the BMS host on overcurrent trip. Reverse-current blocking protects the battery stack from load-side fault backfeed. Select an external N-FET rated for the battery short-circuit current.
Recommended
Recommended Products Summary
Engineering reference data for TPS26633PWPR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS26630PWPR | TPS26636PWPR | TPS26600PWPR |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | HTSSOP-20 (PWP) | HTSSOP-20 (PWP) - same | HTSSOP-20 (PWP) - same | HTSSOP-20 (PWP) - same |
| Operating Voltage Range | 4.5 V to 60 V | 4.5 V to 60 V | 4.5 V to 60 V | 6 V to 55 V |
| Current Limit Range | 0.6 A to 6 A | 0.6 A to 6 A | 0.6 A to 6 A | 0.4 A to 4 A |
| Output Power Limiting | Yes (IEC 61000-4-5 clamp) | No | Yes | No |
| Adjustable OVP/UVLO | Yes | Fixed | Yes | No |
Key Differentiators
- Integrated 60V hot-swap FET eliminates external MOSFET (vs TPS26630PWPR)
- Wider 60V operating range vs TPS26600 family (vs TPS26600PWPR)
- Adjustable OVP/UVLO with fault timer flexibility (vs TPS26636PWPR)
Design Notes
Estimated: At VIN=24V, VOUT=24V, and 6A continuous load, the TPS26633PWPR dissipates I2R power (6A squared x 0.031 ohm = 1.12W). With a properly designed 1-square-inch top-side copper pour on the PowerPAD, theta_JA is approximately 35 C/W, yielding a 39C junction temperature rise above ambient. At 85C ambient this leaves 41C margin to the 125C thermal shutdown threshold. For sustained 6A operation above 70C ambient, increase the copper area to 2 square inches or add top-side airflow.
Place the input bulk capacitor (recommended 1uF X7R minimum, 10uF for high-transient environments) within 5mm of the IN pin to limit inrush-induced ringing. Connect the PowerPAD to a 1-square-inch top-side copper pour with at least 8 thermal vias (0.3mm drill, 1mm pitch) to the inner ground plane. Keep the SENSE trace short and away from switching nodes to prevent noise-induced false current-limit trips.
Do not exceed the 67V absolute maximum input voltage - load-dump transients on 24V automotive/industrial buses can exceed 60V during alternator/battery disconnect events. Add a bidirectional TVS (e.g., SMAJ33CA, SMAJ58CA) on the input for surge clamping. The TIMER capacitor value sets fault retry delay; values below 10nF may cause nuisance tripping on capacitive loads. Always use a 1% resistor on ILIM to achieve the ±7% current-limit accuracy.
Route the high-current IN and OUT traces on separate inner layers with wide copper pours (at least 50 mils for 6A). Use a Kelvin connection for the SENSE resistor to eliminate IR drop in the ground return path. Place the dV/dt capacitor (soft-start programming) as close to the IC pin as possible to prevent false soft-start timing. Avoid routing digital signal traces (PGOOD, FLT) directly over the PowerPAD to prevent capacitive coupling into the analog control loop.
Compliance Information
RoHS compliant per TI product page. Lead-free reflow compatible (peak 260C per JEDEC J-STD-020). Not AEC-Q100 qualified - use TPS2663x-Q1 variants for automotive applications. Halogen-free status not explicitly stated in datasheet.
