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AMT49702KLPATR Equivalent & Substitute Parts
Part Overview
The AMT49702KLPATR is a half bridge driver IC designed for DC motor and general purpose applications. It integrates two independent driver channels with DMOS technology, delivering 1A continuous output current per channel and peak current capability of 1.8A. The device operates across a 4.6V to 15V supply and load voltage range, with integrated charge pump and over-current fault protection. This part carries Automotive grade qualification (AEC-Q100) and is RoHS3 compliant.
The AMT49702KLPATR is classified as Obsolete. Identifying suitable substitute components is necessary to maintain design continuity and ensure availability for new production runs or system updates.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | AMT49702KLPATR |
| Manufacturer | Allegro MicroSystems |
| Category | Power Management (PMIC) |
| Output Configuration | Half Bridge (2) |
| Current - Output / Channel | 1A |
| Current - Peak Output | 1.8A |
| Voltage - Supply | 4.6V ~ 15V |
| Voltage - Load | 4.6V ~ 15V |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Technology | DMOS |
| Grade | Automotive |
| Qualification | AEC-Q100 |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| RoHS Status | ROHS3 Compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution eligibility for the AMT49702KLPATR is determined by the following critical parameters:
- Output Configuration: Half Bridge topology (2 independent channels minimum)
- Current Capability: Minimum 1A continuous output per channel; peak current ≥1.8A
- Voltage Range: Supply and load voltage support of 4.6V minimum to 15V maximum
- Technology: DMOS implementation for compatible switching characteristics
- Grade & Qualification: Automotive grade with AEC-Q100 certification
- Package Compatibility: Surface mount TSSOP package with exposed pad
- Compliance: RoHS3 compliant
The A4992KLPTR-T qualifies as a manufacturer-recommended substitute. While it features an expanded half bridge configuration (4 channels) and extended voltage range (4.6V ~ 50V), it maintains the core functional requirements: DMOS technology, automotive qualification, AEC-Q100 certification, surface mount TSSOP packaging, and RoHS3 compliance. The higher voltage capability and additional channels provide design flexibility without compromising compatibility with the original application envelope.
Parameter Comparison
| Parameter | AMT49702KLPATR | A4992KLPTR-T |
|---|---|---|
| Manufacturer | Allegro MicroSystems | Allegro MicroSystems |
| Category | Power Management (PMIC) | Power Management (PMIC) |
| Output Configuration | Half Bridge (2) | Half Bridge (4) |
| Voltage - Supply | 4.6V ~ 15V | 4.6V ~ 50V |
| Voltage - Load | 4.6V ~ 15V | 4.6V ~ 50V |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 150°C (TJ) |
| Technology | DMOS | DMOS |
| Grade | Automotive | Automotive |
| Qualification | AEC-Q100 | AEC-Q100 |
| Package / Case | 16-TSSOP Exposed Pad | 20-TSSOP Exposed Pad |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The A4992KLPTR-T is the manufacturer-recommended substitute for the obsolete AMT49702KLPATR. Both devices maintain identical automotive qualification (AEC-Q100) and RoHS3 compliance status. The substitute part is currently in active production with confirmed inventory availability (15,803 pcs), ensuring supply chain continuity.
The A4992KLPTR-T provides extended operating temperature range (-40°C ~ 150°C junction temperature versus -40°C ~ 125°C ambient for the original) and expanded voltage support (4.6V ~ 50V versus 4.6V ~ 15V). The increased channel count (4 half bridges versus 2) and package pin count (20-TSSOP versus 16-TSSOP) require PCB layout and firmware modifications but do not introduce compatibility barriers for applications operating within the original 4.6V to 15V envelope.
Frequently Asked Questions (FAQ)
Q: Can the A4992KLPTR-T directly replace the AMT49702KLPATR without PCB modifications?
A: No. The A4992KLPTR-T uses a 20-pin TSSOP package compared to the 16-pin TSSOP of the original part. PCB layout changes are required. Pin assignments differ; direct socket substitution is not possible.
Q: Does the A4992KLPTR-T support the same voltage range as the AMT49702KLPATR?
A: Yes, within the original operating envelope. The A4992KLPTR-T supports 4.6V ~ 50V supply and load voltage, which encompasses the original 4.6V ~ 15V range. Applications designed for the original voltage window operate without modification.
Q: Are both parts automotive qualified?
A: Yes. Both the AMT49702KLPATR and A4992KLPTR-T carry Automotive grade classification and AEC-Q100 qualification. Both are RoHS3 compliant.
Q: What is the primary reason for substitution?
A: The AMT49702KLPATR is classified as Obsolete. The A4992KLPTR-T is the manufacturer-recommended active alternative, ensuring continued availability and supply chain support.
Q: Does the A4992KLPTR-T provide higher current capability?
A: Current specifications are not provided for the A4992KLPTR-T in the available data. Comparison is limited to voltage range, channel configuration, and temperature operating range.
Q: Are there any compliance or certification differences?
A: No. Both parts maintain identical automotive qualification (AEC-Q100) and RoHS3 compliance status.
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