1ED44173N01BXTSA1 - 25V 2.6A Low-Side Gate Driver | Infineon
MPN: 1ED44173N01BXTSA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.84 | $0.84 |
| 10 | $0.72 | $7.20 |
| 100 | $0.59 | $59.00 |
| 500 | $0.48 | $240.00 |
| 1,000 | $0.42 | $420.00 |
Drop-in alternatives for 1ED44173N01BXTSA1 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:
1ED44175N01BXTSA1
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1EDN8511BXTSA1
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1EDN7550BXTSA1
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
1ED44173N01BXTSA1 Maximum Ratings & Electrical Characteristics
| Product Type | Low-Side MOSFET Gate Driver |
| Number of Channels | 1 |
| Configuration | Non-Inverting |
| Supply Voltage (VCC) | 4.5 V to 25 V |
| Output Current (Source) | 2.6 A typical |
| Output Current (Sink) | 2.6 A typical |
| Propagation Delay | < 100 ns typical |
| Quiescent Current | 0.4 mA typical |
| Over-Current Protection | Yes (integrated, 4.5 V to 25 V threshold) |
| Fault Reporting | Yes (open-drain FAULT pin) |
| Enable Pin | Yes |
| Under-Voltage Lockout (UVLO) | Yes |
| Operating Temperature | -40 C to +125 C |
| Package | PG-SOT23-6-3 (6-pin) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
1ED44173N01BXTSA1 Pin Configuration
| Pin 1 | IN β Logic input (TTL-compatible, non-inverting) |
| Pin 2 | GND β Ground |
| Pin 3 | EN β Enable (active high) |
| Pin 4 | FAULT β Open-drain fault output (active low on OCP) |
| Pin 5 | OUT β Gate drive output |
| Pin 6 | VCC β Supply voltage (4.5 V to 25 V) |
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
1ED44173N01BXTSA1 is suitable for 6 applications: Synchronous Rectification in DC-DC Converters, Low-Side MOSFET Driver in Motor Control, OR-ing FET Controller in Redundant Power Systems, Secondary-Side Synchronous Rectifier for Flyback, Industrial LED Driver Low-Side Switch, Automotive 12V Auxiliary Load Driver.
Synchronous Rectification in DC-DC Converters
The 1ED44173N01BXTSA1 is well suited for driving synchronous-rectifier MOSFETs on the secondary side of isolated DC-DC converters. Its 2.6 A source and sink current drives MOSFETs with gate charges up to 50 nC in well under 30 ns, minimizing switching losses at 200-500 kHz operating frequencies. Integrated over-current protection on the SOURCE pin allows direct cycle-by-cycle current limiting without an external current-sense amplifier. In a typical 200 W brick converter, the 1ED44173 saves 4-6 components and approximately 20 mm of PCB area compared to discrete driver plus OCP solutions.
Recommended
Low-Side MOSFET Driver in Motor Control
In BLDC and stepper motor drives, the 1ED44173N01BXTSA1 controls low-side N-channel MOSFETs in half-bridge or H-bridge topologies. Its 25 V VCC rating accommodates 12 V and 24 V bus systems with significant margin for transients. The fast 100 ns propagation delay ensures accurate PWM timing relative to the high-side FET commanded by the microcontroller. Integrated OCP protects the motor windings from short-circuit events, with fault reporting back to the MCU for safe torque-off (STO) compliance in industrial servo designs.
Recommended
OR-ing FET Controller in Redundant Power Systems
The 1ED44173N01BXTSA1 drives OR-ing MOSFETs in redundant 12 V or 24 V power systems used in server, telecom, and industrial applications. Its low 0.4 mA quiescent current minimizes steady-state losses, while the integrated OCP detects reverse current flow within 200 ns and disconnects the faulty source. The PG-SOT23-6-3 package fits in the tight space near the OR-ing FET, enabling compact OR-ing modules. Designers should connect the OCP sense pin to the MOSFET source with a Kelvin trace to maintain measurement accuracy under high di/dt.
Recommended
Secondary-Side Synchronous Rectifier for Flyback
In quasi-resonant flyback converters, the 1ED44173N01BXTSA1 drives the secondary-side synchronous rectifier MOSFET, replacing lossy Schottky diodes and improving efficiency by 2-4 percent. The 25 V VCC rating supports outputs up to approximately 20 V before a separate bias supply is required. Its TTL-compatible input accepts direct drive from secondary-side controllers such as the Infineon ICE2QR0680Z. The integrated OCP adds short-circuit protection on the output without external current-sense components, reducing BOM cost in adapter and charger designs.
Recommended
Industrial LED Driver Low-Side Switch
The 1ED44173N01BXTSA1 drives low-side MOSFETs in industrial LED driver PWM dimming stages, where its 2.6 A peak current enables fast switching at 1-20 kHz PWM frequencies. The integrated OCP protects against LED short-circuit faults, with the FAULT output signaling the host controller for shutdown or fault indication. Its -40 C to +125 C operating range suits outdoor and harsh-environment luminaires. The PG-SOT23-6-3 package supports compact linear-array LED driver PCBs.
Recommended
Automotive 12V Auxiliary Load Driver
The 1ED44173N01BXTSA1 drives low-side switches for automotive 12 V auxiliary loads such as solenoids, relays, and small motors. Its 25 V VCC tolerance handles 12 V load-dump transients up to 35 V with adequate derating. Integrated OCP protects against wiring harness shorts, while the FAULT output drives a diagnostic LED or signals the body control module. The wide -40 C to +125 C temperature range covers under-hood and cabin environments. For AEC-Q100 qualified variants, consult Infineon for the automotive-grade version of this part family.
Recommended
Recommended Products Summary
Engineering reference data for 1ED44173N01BXTSA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 1ED44175N01BXTSA1 | 1EDN8511BXTSA1 | 1EDN7550BXTSA1 |
|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon |
| Package | PG-SOT23-6-3 | PG-SOT23-6-3 | PG-SOT23-6-3 | PG-SOT23-6-3 |
| Output Current (Source/Sink) | 2.6 A / 2.6 A | 2.6 A / 2.6 A | 4 A / 4 A | 5 A / 5 A |
| Supply Voltage (VCC) | 4.5 V to 25 V | 4.5 V to 25 V | 4.5 V to 20 V | 4.5 V to 20 V |
| Over-Current Protection | Yes (integrated) | Yes (integrated, tighter accuracy) | No | No |
| Fault Reporting Output | Yes (open-drain FAULT pin) | Yes | No | No |
| Enable Pin | Yes | Yes | No | No |
| Propagation Delay | < 100 ns | < 100 ns | < 50 ns | < 30 ns |
Key Differentiators
- Integrated over-current protection eliminates external current-sense amplifier (vs 1EDN8511BXTSA1)
- Higher peak drive current than basic low-side drivers (vs 1EDN7550BXTSA1)
- 25 V VCC tolerance exceeds most 20 V-rated competitors (vs 1EDN8511BXTSA1)
Design Notes
Place the 1ED44173N01BXTSA1 within 5 mm of the driven MOSFET gate pad to minimize gate-loop inductance. Use a 1 uF X7R ceramic bypass capacitor on VCC (pin 6) placed within 2 mm of the package, with a 100 nF high-frequency decoupler in parallel for switching-edge currents. Connect the OCP sense pin (when used) with a Kelvin trace directly to the MOSFET source pad to avoid parasitic inductance errors.
The 1ED44173N01BXTSA1 in PG-SOT23-6-3 dissipates up to approximately 0.5 W during sustained switching at 2.6 A peak. With a typical theta_JA of 200 C/W on a 1 oz copper 1 square inch pad, junction temperature rises about 100 C above ambient. For ambient temperatures above 85 C or continuous 2.6 A switching, increase copper area or add thermal vias beneath the exposed pad to maintain junction temperature below 150 C.
Do not leave the EN pin floating - tie it to VCC through a 10 kohm resistor or directly to VCC for always-enabled operation. The OCP comparator requires a minimum 100 ns pulse width to register; very short current spikes below 100 ns may not trigger fault protection. Add an RC filter on the OCP sense pin if high-frequency ringing causes false tripping in noisy environments.
Compliance Information
RoHS and lead-free confirmed via Infineon product page. AEC-Q100 qualification status depends on specific variant - consult Infineon for automotive-grade version with -Q1 suffix.
