My Inquiry
My Account
Allegro MicroSystems A81407KLVATR
- Part No.:
- A81407KLVATR
- Manufacturer:
- Allegro MicroSystems
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
A81407KLVATR.pdf
- Description:
- PMIC FOR SAFETY-RELATED SYSTEMS
- Quantity:
- Payment:
- Shipping:
Inventory:3,950
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
A81407KLVATR from Allegro MicroSystems is an automotive multi-output regulator with buck or buck-boost pre-regulation, gate-driver support, and multiple regulated rails. The device is designed for vehicle embedded systems that require wide-input operation, high-temperature capability, and system-level power management in a 38-pin eTSSOP package.
As part of the Allegro A81407 product family, A81407KLVATR supports 3.8V to 36V input operation, buck/buck-boost power conversion, SPI/control functions, gate drivers, LDO outputs, and -40C to 150C automotive temperature operation. For engineers reviewing the A81407KLVATR datasheet, A81407KLVATR pinout, A81407KLVATR application, or A81407KLVATR equivalent, this device is widely used in automotive control modules, ADAS electronics, camera systems, sensor modules, functional-safety power trees, and high-temperature embedded vehicle platforms.
Technical Context
In automotive electronics, A81407KLVATR operates as a front-end multi-output regulator that accepts a wide 3.8V to 36V input and creates controlled rails for downstream digital, analog, and driver circuitry.
The buck or buck-boost pre-regulator architecture helps maintain regulated outputs across varying vehicle supply conditions, while gate-driver and SPI/control functions support more complex system-power sequencing and diagnostics than a simple buck regulator.
A81407KLVATR is commonly used in high-temperature vehicle modules where robust input range, multiple outputs, control interface, and 38-pin eTSSOP thermal behavior are important design requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Device Type | Automotive multi-output regulator with buck or buck-boost pre-regulation. |
| Input Voltage Range | 3.8V to 36V input range. |
| Temperature Range | -40C to 150C operating temperature range. |
| Package | 38-pin eTSSOP package for A81407KLVATR. |
| Control | SPI/control and diagnostic functions support system-level power management. |
| Integrated Functions | Gate drivers and LDO rails support automotive power-tree integration. |
| Applications | ADAS, camera, sensor, functional-safety, and automotive control modules. |
| Design Value | Wide-input multi-output regulation for high-temperature vehicle electronics. |
Pinout & Package
The A81407KLVATR pinout includes wide-input supply pins, switching regulator pins, LDO outputs, gate-driver pins, SPI/control pins, status/diagnostic pins, and thermal ground connections.
For PCB design, high-current power paths and gate-drive loops should be compact, SPI/control routing should avoid switch-node noise, and the eTSSOP thermal pad should connect to adequate copper.
| Pin / Function | PCB Design and Circuit Role |
|---|---|
| VIN | Wide automotive input supply. |
| SW / Power Pins | Buck or buck-boost switching power-stage connections. |
| LDO Outputs | Linear regulator outputs for auxiliary rails. |
| Gate Driver Pins | Driver outputs for external power-stage or load-control functions. |
| SPI Pins | Serial interface for configuration and diagnostics. |
| EN / RESET / FAULT | Control and status pins for system supervision. |
| GND / Thermal Pad | Ground and thermal return path. |
Key Features
- 3.8V to 36V input supports vehicle supply conditions.
- Buck/buck-boost pre-regulation supports wide operating range.
- Gate drivers and LDO rails integrate power-tree functions.
- SPI/control interface supports diagnostics and configuration.
- 150C temperature capability suits harsh automotive locations.
- 38-pin eTSSOP package supports complex automotive power systems.
Applications
| ADAS Electronics | Camera Systems |
|---|---|
|
Use Scenario: Used in advanced driver-assistance modules. IC Role: Provides wide-input multi-rail regulation and diagnostics. Use Value: Supports robust vehicle power design. |
Use Scenario: Used in automotive imaging modules. IC Role: Supplies regulated rails and control functions. Use Value: Improves module integration. |
| Sensor Modules | Functional-Safety Power Trees |
|
Use Scenario: Used in high-temperature vehicle sensing platforms. IC Role: Generates local rails from a wide input. Use Value: Supports reliable operation across supply variation. |
Use Scenario: Used in safety-oriented automotive electronics. IC Role: Provides control, diagnostics, and multi-output regulation. Use Value: Improves supervised power architecture. |
Equivalent & Alternatives
When evaluating a A81407KLVATR equivalent, engineers should compare input range, buck/buck-boost architecture, gate-driver functions, LDO outputs, SPI diagnostics, package, and automotive temperature rating.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS43340QPHPRQ1 | Texas Instruments automotive quad-output supply with two buck controllers, one buck converter, and one LDO. | Used in vehicle systems requiring several regulated rails from high input voltage. | Compare topology, SPI/diagnostics, package, input range, and qualification. |
| MAX20049ATED/VY+ | Analog Devices/Maxim automotive PMIC for camera and ADAS power rails with different regulator and diagnostic architecture. | Used in vehicle modules requiring compact multi-output PMIC behavior. | Compare rail count, control interface, package, and system diagnostics. |
Compared with TPS43340QPHPRQ1, A81407KLVATR offers Allegro's A81407-specific buck/buck-boost, gate-driver, and SPI/control architecture. A81407KLVATR vs MAX20049ATED/VY+ selection depends on required rail topology, diagnostics, package, and automotive module architecture.
Quality
A81407KLVATR should be sourced as original Allegro MicroSystems components through traceable supply channels. Quality checks may include eTSSOP package inspection, top-mark validation, solderability testing, and multi-output electrical verification.
Production validation should include input transient behavior, SPI diagnostics, regulator startup, gate-driver behavior, thermal performance, and automotive temperature operation.
Availability
A81407KLVATR available at Aetrix Electronics and is suitable for automotive, ADAS, camera, sensor, and functional-safety power systems requiring high-temperature multi-output regulation.
Supply support may include volume procurement planning, scheduled delivery arrangements, traceable sourcing management, and long-term supply support for OEM, industrial electronics, automotive electronics, and embedded product programs. Sample and NPI supply support, as well as urgent in-stock supply support, can also be arranged for prototype builds, pilot runs, and time-critical production needs.
For production builds, confirming package, temperature grade, rail requirements, SPI/control use, lifecycle status, and sourcing continuity helps reduce procurement risk.
Manufacturer
Allegro MicroSystems is a semiconductor manufacturer specializing in power and sensing ICs for automotive, industrial, motor-control, and safety-critical electronic systems.
The A81407 product family is an Allegro automotive multi-output regulator series with buck/buck-boost regulation, gate-driver functions, SPI control, and high-temperature operation for vehicle power systems.
FAQ
What is A81407KLVATR used for?
A81407KLVATR is used for automotive ADAS, camera, sensor, and functional-safety power systems requiring wide-input multi-output regulation.
Where can I find the A81407KLVATR datasheet download?
The A81407KLVATR datasheet is available from Allegro MicroSystems and includes regulator functions, package data, SPI/control behavior, and application information.
What should be considered in A81407KLVATR pinout design?
Designers should route switching and gate-driver paths compactly, isolate SPI/control lines from noisy nodes, and use adequate thermal copper for the eTSSOP package.
Is A81407KLVATR intended for automotive operation?
Yes. It is designed for automotive multi-output regulation and high-temperature vehicle electronics.
What are common A81407KLVATR equivalent solutions?
Common candidates include TPS43340QPHPRQ1 and MAX20049ATED/VY+ depending on rail topology, diagnostics, package, and automotive system requirements.
A81407KLVATR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Series:
- -
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) (1) or Step-Down/Step-Up (Buck/Boost) (1), Linear (LDO) (4)
- Number of Outputs:
- 9
- Frequency - Switching:
- 2.2MHz
- Voltage/Current - Output 1:
- Fixed, Selectable, Fixed, 5.35V, -
- Voltage/Current - Output 2:
- Fixed, Selectable, Fixed, 3.3V/5V, 375mA
- Voltage/Current - Output 3:
- Fixed, Selectable, Fixed, 5V, 150mA
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- Yes
- Voltage - Supply:
- 3.8V ~ 36V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 38-eTSSOP
A81407KLVATR FAQ
1.How can I place an order for A81407KLVATR through Aetrix?
Please submit a Request for Quotation (RFQ) for A81407KLVATR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for A81407KLVATR reliable?
The price and inventory of A81407KLVATR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for A81407KLVATR is usually 5 days.
3.What payment methods are accepted for A81407KLVATR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for A81407KLVATR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for A81407KLVATR?
A81407KLVATR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your A81407KLVATR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for A81407KLVATR?
For technical support, including A81407KLVATR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your A81407KLVATR requirements.
6.How does Aetrix verify that A81407KLVATR is sourced from the original manufacturer or authorized distributors?
All A81407KLVATR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that A81407KLVATR meets industry standards.
7.What is the process for return or replacement of A81407KLVATR?
All A81407KLVATR units undergo pre-shipment inspection (PSI). If there is an issue with A81407KLVATR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The A81407KLVATR part is unused and in its original packaging.
Return procedure for A81407KLVATR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
A81407KLVATR Tags
-
TPS6521905RHBR
Texas Instruments
-
MIC3385YHL-TR
Microchip Technology
-
A4402ELPTR-T
Allegro MicroSystems
-
LM26480SQ-AA/NOPB
Texas Instruments
-
A4402KLPTR-T
Allegro MicroSystems
-
BD71847AMWV-E2
ROHM Semiconductor
-
ADP5040ACPZ-1-R7
Analog Devices Inc.
-
LT3048IDC#TRPBF
Analog Devices Inc.
-
ADP5037ACPZ-R7
Analog Devices Inc.
-
XRP7714ILB-F
MaxLinear, Inc.
-
LTC3260EDE#TRPBF
Analog Devices Inc.
-
LTC3260EMSE#PBF
Analog Devices Inc.
Tech Hub
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
Machine vision system guide covering components, inspection workflow, camera and lens selection, FOV, pixel resolution, motion blur, strobe lighting, bandwidth, 2D/3D vision, integration, troubleshooti…
Electronic devices and circuits guide covering passive components, semiconductors, analog and digital circuits, circuit theory, practical calculations, troubleshooting, datasheet selection, and learnin…
Oil pressure sensor diagnosis covering symptoms, location, testing, replacement, socket access, common failure cases, and the electronic signal path between the pressure sensor, wiring, ECU and gauge s…
MLCC ESR, impedance and self-resonant frequency in decoupling networks. Covers PDN behavior, frequency response, measurement methods, failure cases and practical capacitor selection for power integrity…
An actuator converts a control signal and energy source into mechanical motion. This guide explains actuator types, working principles, electric and linear actuators, automotive use cases, troubleshoot…
A potentiometer is a three-terminal adjustable resistor used for voltage division, analog control, calibration and signal adjustment. This guide explains wiring, symbols, types, 10k values, digital pot…
An FPGA is reconfigurable digital hardware used for custom logic, parallel processing, low-latency I/O and interface control. This guide explains FPGA meaning, architecture, boards, programming flow, a…
A logic gate is a basic digital circuit that uses Boolean logic to convert binary inputs into one output. This guide explains AND, OR, NOT, NAND, NOR, XOR, truth tables, universal gates, logic ICs and …
A mass air flow sensor, often called a MAF sensor, measures the amount of air entering an engine.
