ACS725LLCTR-05AB-T Equivalent & Substitute Parts

Part Overview

The ACS725LLCTR-05AB-T is a Hall Effect current sensor manufactured by Allegro MicroSystems, designed for measuring AC/DC currents up to 5A in automotive-grade applications. This surface-mount device operates across a wide temperature range (-40°C to 150°C) and provides ratiometric voltage output with high linearity and accuracy specifications. The part maintains Active product status and carries AEC-Q100 automotive qualification, making it suitable for demanding automotive and industrial measurement applications.

Substitute parts are identified when they maintain identical electrical performance parameters, mechanical compatibility, and compliance certifications while potentially offering alternative sourcing or packaging options.

Substiute Parts

ACS725LLCTR-05AB-T

Allegro MicroSystemsIn Stock: 667114ACS725LLCTR-05AB-T Datasheet

Current PartRFQ

ACS725LLCTR-05AB-T

Allegro MicroSystemsIn Stock: 667114ACS725LLCTR-05AB-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ACS725LLCTR-05AB-T is determined by strict equivalence across the following critical parameters:

• Current sensing capability: 5A bidirectional measurement
• Sensor technology: Hall Effect with differential configuration
• Output characteristics: Ratiometric voltage output with 264mV/A sensitivity
• Electrical performance: Linearity ±1.5%, Accuracy ±0.9%, Frequency DC ~ 120kHz
• Supply voltage compatibility: 3V ~ 3.6V operation
• Mechanical compatibility: 8-SOIC package (0.154", 3.90mm Width) surface mount
• Automotive qualification: AEC-Q100 certified
• Compliance: ROHS3 compliant, REACH unaffected
• Product lifecycle: Active status

Only parts matching all these parameters across electrical performance, mechanical form factor, and compliance certifications qualify as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

Component selection for the ACS725LLCTR-05AB-T should prioritize the following criteria:

Product Status & Availability: The part maintains Active product status with substantial inventory (667,066 pcs) available as new original stock in Cut Tape and Digi-Reel packaging formats. This ensures long-term supply continuity and standard lead times.

Compliance & Certification: AEC-Q100 automotive qualification confirms suitability for automotive-grade applications. ROHS3 compliance and REACH unaffected status satisfy regulatory requirements for EU and international markets. MSL Level 3 (168 hours) indicates standard moisture handling requirements for surface-mount assembly processes.

Electrical Performance Stability: The specified linearity (±1.5%) and accuracy (±0.9%) parameters, combined with 4µs response time and DC ~ 120kHz frequency capability, establish this device for precision current measurement in control and monitoring circuits. The 264mV/A sensitivity provides adequate signal resolution for 5A measurement applications.

Thermal & Environmental Robustness: Operating temperature range of -40°C to 150°C (TA) supports automotive underhood and industrial environments. Bidirectional polarization enables AC/DC current measurement without circuit reconfiguration.

Supply Voltage Compatibility: The 3V ~ 3.6V supply range aligns with modern low-voltage automotive and industrial control systems, with maximum supply current of 14mA enabling integration into power-constrained applications.

Frequently Asked Questions (FAQ)

Q: What defines a valid substitute for the ACS725LLCTR-05AB-T?

A: A valid substitute must match all electrical parameters (5A current sensing, 264mV/A sensitivity, ±1.5% linearity, ±0.9% accuracy, DC ~ 120kHz frequency), maintain identical output type (ratiometric voltage), operate within the same supply voltage range (3V ~ 3.6V), use the same package (8-SOIC), and carry equivalent automotive qualification (AEC-Q100) and compliance certifications (ROHS3).

Q: Can this part be used in non-automotive applications?

A: Yes. While qualified to AEC-Q100 automotive standards, the ACS725LLCTR-05AB-T electrical and mechanical specifications support industrial, consumer, and commercial measurement applications. The automotive qualification indicates enhanced reliability and environmental stress testing, making it suitable for demanding non-automotive environments.

Q: What is the significance of the 8-SOIC package specification?

A: The 8-SOIC (0.154", 3.90mm Width) package defines the physical form factor for PCB layout, land pattern design, and assembly process compatibility. Substitutes must use identical package dimensions to ensure drop-in compatibility without circuit board redesign or assembly process modification.

Q: How does the 264mV/A sensitivity affect circuit design?

A: The 264mV/A sensitivity determines the output voltage swing for a given current range. For 5A full-scale measurement, the output spans approximately 1.32V (264mV/A × 5A), providing adequate signal amplitude for standard analog-to-digital converter (ADC) input ranges (typically 0V ~ 3.3V or 0V ~ 5V) with good noise margin and resolution.

Q: What does MSL Level 3 (168 Hours) mean for assembly and storage?

A: MSL Level 3 indicates the component can be exposed to ambient conditions (30°C, 60% relative humidity) for up to 168 hours before solder reflow assembly. Extended storage beyond this period requires dry-pack conditions (desiccant bag, <10% relative humidity) to prevent moisture absorption that could cause solder joint defects during reflow.

Q: Is the ACS725LLCTR-05AB-T suitable for high-frequency AC current measurement?

A: Yes. The DC ~ 120kHz frequency specification supports AC current measurement up to 120kHz. This range covers standard industrial power frequencies (50/60Hz), motor control applications, and switched-mode power supply (SMPS) current monitoring. Applications requiring measurement beyond 120kHz require alternative sensor architectures.

Q: What is the difference between "Ratiometric" and "Absolute" voltage output?

A: Ratiometric output scales proportionally to the supply voltage, meaning the output voltage range adjusts with supply voltage variations. This design reduces the impact of supply voltage noise on measurement accuracy. Absolute output maintains fixed voltage levels independent of supply voltage, requiring more precise voltage regulation in the application circuit.