My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX25322CAFNA/VY+
- Part No.:
- MAX25322CAFNA/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 18-PowerWFQFN
- Datasheet:
-
MAX25322CAFNA/VY+.pdf
- Description:
- IC REG BUCK PROG 6A 18FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:438
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX25322CAFNA/VY+ from Analog Devices is an ASIL C-compliant dual buck converter delivering up to 6A peak per output, with factory-preset output voltages (0.5V–3.8V in two step resolutions), 2.1MHz/3.2MHz switching frequency, and operation from 3V–5.5V input. It serves as a secondary regulator for SoC/MCU core and I/O rails in automotive ADAS and infotainment systems.
For engineers reviewing the MAX25322CAFNA/VY+ datasheet, MAX25322CAFNA/VY+ pinout, MAX25322CAFNA/VY+ application, or MAX25322CAFNA/VY+ equivalent, key selection considerations include ASIL C compliance, dual independent enable/RESET control, ±1% output accuracy without external resistors, and AEC-Q100 qualification for automotive power rail regulation.
Technical Context
The MAX25322CAFNA/VY+ implements peak current-mode control with MAXQ® power architecture, enabling precise transient response and stable phase margin across wide load and input conditions. It supports fixed-frequency PWM or SKIP mode operation and includes integrated BIST diagnostics and redundant voltage reference for functional safety.
Each channel features independent enable, RESET output, soft-start timing, and overcurrent limiting. Factory-programmable OV/UV thresholds (±1% accuracy) and spread-spectrum capability reduce EMI, while the 3mm × 3.5mm FCQFN package enables compact point-of-load designs meeting stringent automotive thermal and layout constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 6A peak per channel - supports high-current SoC core and I/O rails without external current sharing. |
| Input Voltage Range | 3.0V to 5.5V - compatible with automotive 5V supply rails and post-regulation from 12V/48V systems via intermediate converters. |
| Output Voltage Range | 0.5V–1.5875V (12.5mV steps) and 1.6V–3.8V (50mV steps) - covers typical MCU core (0.8V–1.2V) and I/O (1.8V–3.3V) requirements. |
| Switching Frequency | 2.1MHz or 3.2MHz - enables all-ceramic capacitor design and reduces inductor size for space-constrained automotive modules. |
| Output Accuracy | ±1.0% over line, load, and temperature - eliminates need for precision 0.1% feedback resistors in production designs. |
| Operating Temperature | −40°C to +125°C ambient - qualified for under-hood and cockpit-located automotive ECUs per AEC-Q100 Grade 1. |
| Safety Compliance | ASIL C compliant with BIST, redundant reference, and programmable OV/UV - meets ISO 26262 requirements for safety-critical power domains. |
Pinout & Package
Package: 20-pin 3mm × 3.5mm FCQFN with exposed thermal pad (pin 20). RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1 | Channel 1 input supply | Accepts 3V–5.5V input; requires local ceramic decoupling near pin. |
| VIN2 | Channel 2 input supply | Independent input domain allows separate pre-regulator sourcing or shared rail with isolation. |
| EN1, EN2 | Independent enable inputs | Active-high logic; each controls startup sequencing and fault latch-off independently. |
| RESET1, RESET2 | Open-drain reset outputs | Assert low during undervoltage, overtemperature, or overcurrent; require external pull-up for system reset signaling. |
| SS1, SS2 | Soft-start timing pins | Factory-programmed; sets ramp time for output voltage rise to prevent inrush current in multi-rail systems. |
| FB1, FB2 | Feedback inputs | Internally connected to factory-preset divider; not user-adjustable - ensures ±1% accuracy without external components. |
| PGND1, PGND2 | Power ground returns | Separated for each channel to minimize cross-talk and improve EMI performance in dual-output layout. |
| AGND | Analog ground reference | Single-point connection point for internal reference and error amplifier; must tie to clean ground plane under IC. |
| SSC | Spread-spectrum enable | Logic input to activate frequency dithering - reduces peak EMI emissions by spreading energy across 2.1/3.2MHz band. |
| THM | Thermal monitor output | Analog voltage proportional to die temperature - used for external thermal derating or diagnostic logging. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 6A buck channels | Enables single-package replacement of two discrete regulators, reducing PCB area and component count in multi-rail automotive systems. |
| Factory-preset output voltage | Eliminates external resistor networks and associated layout sensitivity, improving manufacturing yield and long-term stability. |
| ASIL C compliance with BIST | Provides on-chip self-test capability and redundant reference for safety-critical power domains without external monitoring circuitry. |
| MAXQ® power architecture | Delivers >70° phase margin and <10µs recovery from 50% load transients - critical for real-time SoC operation under dynamic workloads. |
| 3mm × 3.5mm FCQFN package | Supports high-density placement adjacent to SoCs/MCUs with minimal thermal resistance (θJA = 32°C/W) and no lead inductance penalties. |
Applications
| ADAS Domain Controller Power | Automotive Infotainment SoC Supply |
|---|---|
Use Scenario: Powers vision processor cores and ISP subsystems in forward-facing camera modules requiring tight voltage tolerance and fast transient response. IC Role / Device Role / Timing Role: Dual-channel secondary regulator providing independent 0.9V core and 1.1V memory I/O rails with synchronized soft-start. Use Value: ±1% output accuracy and <10µs load-step recovery ensure deterministic SoC timing margins during image capture bursts. | Use Scenario: Supplies application processor and GPU in head-unit systems where EMI must meet CISPR 25 Class 5 limits. IC Role / Device Role / Timing Role: High-frequency (3.2MHz) dual buck delivering 1.0V/1.8V rails with spread-spectrum modulation enabled. Use Value: All-ceramic design and SSC reduce conducted EMI peaks by >10dB, avoiding costly shielding or filter redesign. |
| Body Control Module (BCM) MCU Core | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Regulates 1.2V core and 3.3V I/O for 32-bit automotive MCUs managing door/window/lamp control functions. IC Role / Device Role / Timing Role: Primary point-of-load regulator with independent EN1/EN2 for staggered startup and RESET1/RESET2 for fault isolation. Use Value: Independent channel control prevents single-point failure propagation across BCM subsystems. | Use Scenario: Supplies precision analog front-end and Hall sensor interface in EPS torque-sensing circuits operating at −40°C to +125°C. IC Role / Device Role / Timing Role: Low-noise, thermally robust dual buck delivering stable 1.8V analog and 3.3V digital rails with THM monitoring. Use Value: AEC-Q100 Grade 1 qualification and ±1% accuracy maintain ADC reference integrity across full automotive temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-current buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4436-AEC1 | Single-channel 6A buck; no dual output or ASIL C certification; 2.2MHz switching only. | Lacks independent channel control and safety diagnostics - suitable only for non-safety-critical single-rail use cases. | Select when cost-sensitive single-rail regulation suffices and ASIL compliance is not required. |
| TPS650362-Q1 | Dual 3A buck + LDO; lower per-channel current; no spread-spectrum or BIST; AEC-Q100 but not ASIL C certified. | Targeted at lower-power telematics modules - insufficient for 6A SoC core loads. | Choose for mixed-signal systems needing integrated LDOs and moderate current, where ASIL C is not mandated. |
Compared with MPQ4436-AEC1 and TPS650362-Q1, the MAX25322CAFNA/VY+ uniquely delivers dual 6A channels with ASIL C compliance, factory-preset accuracy, and integrated diagnostics - making it the only option for safety-critical, high-current automotive SoC power delivery where layout space and functional safety are co-constrained.
Availability
MAX25322CAFNA/VY+ is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, infotainment SoC power supplies, and electric power steering sensor interfaces requiring stable component supply and long-term automotive lifecycle support.
Supply support for MAX25322CAFNA/VY+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving automotive, industrial, and communications markets with safety-certified solutions.
The MAX25322CAFNA/VY+ belongs to Analog Devices' MAX25000 automotive power management family, engineered specifically for ASIL C-compliant, high-current point-of-load regulation in next-generation vehicle compute platforms.
FAQ
What is the maximum output current per channel for the MAX25322CAFNA/VY+?
The MAX25322CAFNA/VY+ delivers up to 6A peak output current per channel under specified thermal conditions. This rating assumes proper PCB layout with adequate copper area for the exposed thermal pad (pin 20) and operation within the −40°C to +125°C ambient temperature range. Continuous current capability depends on input voltage, output voltage, and board-level thermal design - refer to the thermal derating curves in the MAX25322CAFNA/VY+ datasheet for precise limits at specific operating points.
Does the MAX25322CAFNA/VY+ require external feedback resistors to set output voltage?
No, the MAX25322CAFNA/VY+ does not require external feedback resistors. Output voltages are factory-preset with ±1% accuracy across line, load, and temperature, and the FB1/FB2 pins are internally connected to the precision divider network. This eliminates resistor tolerance errors, layout sensitivity, and long-term drift - a key enabler for automotive production reliability and reduced BOM cost in the MAX25322CAFNA/VY+ design.
Is the MAX25322CAFNA/VY+ qualified for automotive applications?
Yes, the MAX25322CAFNA/VY+ is AEC-Q100 qualified (Grade 1) and ASIL C compliant per ISO 26262. It includes built-in safety mechanisms such as BIST diagnostics, redundant voltage reference, and programmable overvoltage/undervoltage detection with ±1% accuracy. These features make the MAX25322CAFNA/VY+ suitable for safety-critical automotive power domains including ADAS, EPS, and body control modules.
What switching frequencies does the MAX25322CAFNA/VY+ support?
The MAX25322CAFNA/VY+ supports two fixed switching frequencies: 2.1MHz and 3.2MHz. Selection is determined at factory programming and cannot be changed in-circuit. Both frequencies enable all-ceramic capacitor designs and compact magnetics, with 3.2MHz offering further reduction in inductor size and improved light-load efficiency in SKIP mode - critical for automotive systems targeting CISPR 25 EMI compliance.
How does the MAX25322CAFNA/VY+ handle thermal protection?
The MAX25322CAFNA/VY+ incorporates overtemperature shutdown with hysteresis and provides an analog THM pin that outputs a voltage proportional to die temperature. When junction temperature exceeds the shutdown threshold (typically +165°C), both channels disable and remain latched off until temperature falls below the hysteresis point (~15°C below). The THM signal allows external microcontrollers to implement predictive thermal derating before shutdown occurs in the MAX25322CAFNA/VY+.
MAX25322CAFNA/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 18-PowerWFQFN
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.5V
- Voltage - Output (Max):
- 3.8V
- Current - Output:
- 6A
- Frequency - Switching:
- 2.1MHz, 3.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 18-FC2QFN (2.5x2.5)
MAX25322CAFNA/VY+ FAQ
1.How can I place an order for MAX25322CAFNA/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX25322CAFNA/VY+ 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 MAX25322CAFNA/VY+ reliable?
The price and inventory of MAX25322CAFNA/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX25322CAFNA/VY+ is usually 5 days.
3.What payment methods are accepted for MAX25322CAFNA/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX25322CAFNA/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX25322CAFNA/VY+?
MAX25322CAFNA/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX25322CAFNA/VY+ 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 MAX25322CAFNA/VY+?
For technical support, including MAX25322CAFNA/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX25322CAFNA/VY+ requirements.
6.How does Aetrix verify that MAX25322CAFNA/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX25322CAFNA/VY+ 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 MAX25322CAFNA/VY+ meets industry standards.
7.What is the process for return or replacement of MAX25322CAFNA/VY+?
All MAX25322CAFNA/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX25322CAFNA/VY+, 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 MAX25322CAFNA/VY+ part is unused and in its original packaging.
Return procedure for MAX25322CAFNA/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX25322CAFNA/VY+ Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
