My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX25262AFOF/VY+
- Part No.:
- MAX25262AFOF/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX25262AFOF/VY+.pdf
- Description:
- IC REG BUCK ADJ/1V 2A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,515
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX25262AFOF/VY+ from Analog Devices is an AEC-Q100 qualified automotive synchronous buck converter with integrated 2A high-side and low-side MOSFETs, 3.5V–65V input range, 2.1MHz fixed switching frequency, and 3.5μA no-load quiescent current-designed for double-battery automotive power rails in instrument clusters and head units.
For engineers reviewing the MAX25262AFOF/VY+ datasheet, MAX25262AFOF/VY+ pinout, MAX25262AFOF/VY+ application, or MAX25262AFOF/VY+ equivalent, key selection criteria include its 20ns minimum on-time for skip-free 3.3V output at 24VIN, pin-selectable spread spectrum, PGOOD monitoring, and symmetrical FCQFN-17 (3.5mm × 3.75mm) package optimized for EMI performance.
Technical Context
The MAX25262AFOF/VY+ implements current-mode control with internal 5V BIAS LDO and EXTVCC switchover capability, enabling efficiency optimization by bypassing the internal regulator when a 3.25V–5.5V external supply is applied. Its 98% max duty cycle supports low-dropout operation during cold-crank transients down to 3.5V input.
It features PLL-based external clock synchronization (SYNC), pin-selectable forced PWM or skip mode via FSYNC logic level, and ±6% spread-spectrum modulation (SPS pin) to reduce peak EMI emissions-without compromising wide-input-voltage robustness or thermal protection (170°C shutdown with 15°C hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 65V - supports automotive double-battery systems (12V/24V) and cold-crank transients. |
| Output Current | 2A continuous - sufficient for powering microcontrollers, sensors, and display controllers in automotive modules. |
| Quiescent Current | 3.5μA at no load - enables always-on functionality without excessive battery drain in vehicle sleep modes. |
| Switching Frequency | 2.1MHz fixed - allows use of small 2.2μH inductors and compact 22μF ceramic output capacitors. |
| Minimum On-Time | 20ns typical - ensures stable 3.3V output from 24VIN without pulse-skipping or regulation loss. |
| PGOOD Accuracy | ±2% output voltage window (93–97% rising, 91.5–95.5% falling) - enables precise power sequencing in multi-rail systems. |
| Thermal Protection | 170°C shutdown with 15°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| AEC-Q100 Grade | Grade -40°C to +125°C ambient - certified for under-hood and dashboard-mounted automotive applications. |
Pinout & Package
Package: FCQFN-17 (3.5mm × 3.75mm), exposed pad, symmetrical layout for EMI suppression and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PGOOD) | Open-drain power-good indicator | Signals output regulation status; requires external 20kΩ pull-up; asserts low on undervoltage/overvoltage faults. |
| 2 (EN) | Active-high enable input | Tolerates up to +70V; controls startup/shutdown sequencing; high-impedance when pulled low. |
| 3,9 (SUP) | High-side supply input | Dual pins for low-impedance connection to input rail; each requires 2.2μF + 0.1μF local bypass for EMI suppression. |
| 5,7 (PGND) | Power ground return | Low-inductance return path for high-current LX switching node; must be tied together and connected to exposed pad. |
| 6 (LX) | Switch-node connection | Drives external inductor; carries high di/dt current; layout minimization critical for EMI and efficiency. |
| 10 (BST) | Bootstrap capacitor terminal | Connects 0.1μF ceramic capacitor to LX; supplies gate drive voltage for high-side MOSFET. |
| 11 (GND) | Analog ground reference | Separate from PGND for noise-sensitive feedback and control circuitry; connects to system AGND plane. |
| 12 (BIAS) | Internal LDO output | 5V regulated supply for internal logic; bypassed with ≥2.2μF ceramic capacitor; can be overridden by EXTVCC. |
| 13 (FB) | Feedback voltage sense | Monitors output via internal divider (fixed 3.3V/5V) or external resistor network (1V–20V programmable). |
| 14 (EXTVCC) | External bias supply input | Accepts 3.25V–5.5V to disable internal LDO, reducing power dissipation and improving light-load efficiency. |
| 15 (OUT) | Output voltage sense point | Used with internal feedback divider; connects directly to output rail for accurate regulation sensing. |
| 16 (SYNC) | Frequency synchronization input | Enables PLL lock to external clock; logic-low enables skip mode; logic-high forces PWM for EMI control. |
| 17 (SPS) | Spread-spectrum enable | Pull high to activate ±6% triangular frequency dithering; disabled automatically during external SYNC. |
| EP (Exposed Pad) | Thermal and electrical ground | Must be soldered to input supply plane (same as SUP pins) for thermal conduction and low-impedance PGND return. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (−40°C to +125°C ambient) - validated for safety-critical vehicle subsystems. |
| EMI reduction architecture | Symmetrical FCQFN layout + pin-selectable spread spectrum + internal gate driver optimization - reduces radiated emissions without filter components. |
| Low-IQ standby operation | 3.5μA supply current - extends battery life in always-on automotive modules such as telematics and ADAS sensors. |
| Wide-input transient resilience | 98% max duty cycle + 20ns min on-time - maintains regulation during 3.5V cold-crank events while delivering 3.3V/2A output. |
| Flexible output configuration | Fixed 3.3V/5V or 1V–20V adjustable via external resistor divider - supports diverse SoC, MCU, and peripheral voltage requirements. |
| Robust protection suite | Cycle-by-cycle current limit, hiccup-mode short-circuit recovery, thermal shutdown with auto-restart, and PGOOD fault signaling - improves system-level reliability. |
Applications
| Instrument Cluster Power Supply | Head Unit DC-DC Stage |
|---|---|
Use Scenario: Powers LCD display controller, CAN transceiver, and microcontroller in digital instrument clusters requiring stable 3.3V/5V rails during engine start-stop cycles. IC Role / Device Role / Timing Role: Primary step-down regulator converting 12V battery to 3.3V logic supply with PGOOD sequencing and cold-crank resilience. Use Value: 20ns min on-time and 98% duty cycle prevent output dropout during 3.5V transients; 3.5μA IQ avoids parasitic drain in parked vehicle state. | Use Scenario: Supplies 5V rail to audio DSP, touchscreen controller, and Bluetooth/WiFi modules in infotainment head units with strict EMI limits near AM/FM receivers. IC Role / Device Role / Timing Role: EMI-optimized buck converter operating in forced PWM or spread-spectrum mode to suppress switching harmonics in sensitive RF bands. Use Value: Pin-selectable SPS and SYNC-driven FPWM eliminate variable-frequency noise; 2.1MHz operation minimizes filter size without compromising AM band immunity. |
| Distributed Body Control Module | ADAS Camera Power Rail |
Use Scenario: Provides isolated 5V supply to door module ECUs, seat control units, and lighting drivers across vehicle body networks with varying input voltages. IC Role / Device Role / Timing Role: Wide-input (3.5V–65V) buck regulator supporting both 12V and 24V architectures with single-BOM flexibility. Use Value: Input range covers 12V nominal, 24V commercial truck, and 65V load-dump transients; dual SUP/PGND pins simplify PCB routing in space-constrained modules. | Use Scenario: Generates clean 1.8V or 3.3V for image sensor and ISP in rear-view or surround-view cameras mounted near engine compartments. IC Role / Device Role / Timing Role: High-efficiency, thermally robust buck stage with EXTVCC switchover to minimize self-heating in sealed enclosures. Use Value: EXTVCC bypass reduces internal power dissipation; thermal shutdown (170°C) and 125°C ambient rating ensure reliability in high-temp mounting locations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX25263AFOF/VY+ | 3A output current rating; identical pinout, package, and feature set; higher current limit (4.75A typ vs. 3.6A typ). | Preferred where peak loads exceed 2A or margin is required for future design scaling. | Select MAX25263AFOF/VY+ only if sustained >2A output current is needed; otherwise MAX25262AFOF/VY+ offers better cost/performance balance. |
| TPS65632AQPWPRQ1 | 40V max input; 2.5A output; 2.2MHz switching; no spread spectrum; different pinout (20-pin HTSSOP); lacks EXTVCC switchover. | Suitable for lower-voltage 12V-only systems where 65V capability is unnecessary and EMI is managed externally. | Choose TPS65632AQPWPRQ1 only for cost-sensitive 12V applications without cold-crank or double-battery requirements. |
Compared with MAX25263AFOF/VY+, the MAX25262AFOF/VY+ delivers optimal efficiency and thermal performance at ≤2A loads while maintaining identical footprint and feature compatibility; versus TPS65632AQPWPRQ1, it provides superior input voltage range, integrated EMI mitigation, and flexible bias architecture for demanding automotive environments.
Availability
MAX25262AFOF/VY+ is available at Aetrix Electronics and suitable for automotive instrument clusters, head units, and distributed body control modules requiring stable component supply with AEC-Q100 compliance and long-term production support.
Supply support for MAX25262AFOF/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 digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX25262AFOF/VY+ belongs to the MAX25262/MAX25263 family of automotive-grade buck converters, designed specifically to meet stringent OEM power consumption, EMI, and reliability requirements in next-generation vehicle electronics.
FAQ
What is the maximum input voltage supported by the MAX25262AFOF/VY+?
The MAX25262AFOF/VY+ supports a maximum input voltage of 65V, enabling operation across 12V and 24V automotive battery systems and surviving ISO 7637-2 load-dump transients. This rating is specified in the Absolute Maximum Ratings table and validated per AEC-Q100 stress testing protocols.
Does the MAX25262AFOF/VY+ support adjustable output voltage?
Yes, the MAX25262AFOF/VY+ supports adjustable output voltage from 1V to 20V using an external resistor divider connected between OUT, FB, and GND. The internal reference voltage is 1.0V (typ), and the feedback leakage current is ≤1μA, ensuring stable regulation across the full range.
How does the EXTVCC pin improve efficiency in the MAX25262AFOF/VY+?
The EXTVCC pin allows bypassing the internal 5V BIAS LDO by applying 3.25V–5.5V externally, reducing internal power dissipation and scaling gate drive current with duty cycle. When 5V is applied to EXTVCC, RDS(on) of internal FETs decreases, further improving conversion efficiency-especially at light loads.
What protection features are integrated into the MAX25262AFOF/VY+?
The MAX25262AFOF/VY+ integrates cycle-by-cycle overcurrent limiting, hiccup-mode short-circuit recovery, thermal shutdown at 170°C with 15°C hysteresis, input undervoltage lockout (UVLO), and PGOOD fault signaling. These features are fully documented in the Electrical Characteristics and Detailed Description sections of the datasheet.
Is the MAX25262AFOF/VY+ pin-compatible with other devices in the MAX25262/MAX25263 family?
Yes, the MAX25262AFOF/VY+ shares identical pinout, package (FCQFN-17), and footprint with MAX25262BFOF/VY+, MAX25263AFOF/VY+, and MAX25263BFOF/VY+. All variants support the same PCB layout, allowing hardware reuse across 2A/3A and 3.3V/5V configurations without redesign.
MAX25262AFOF/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 17-PowerWFQFN
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 65V
- Voltage - Output (Min/Fixed):
- 1V (12V)
- Voltage - Output (Max):
- 20V
- Current - Output:
- 2A
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 17-FC2QFN (3.5x3.75)
MAX25262AFOF/VY+ FAQ
1.How can I place an order for MAX25262AFOF/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX25262AFOF/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 MAX25262AFOF/VY+ reliable?
The price and inventory of MAX25262AFOF/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX25262AFOF/VY+ is usually 5 days.
3.What payment methods are accepted for MAX25262AFOF/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX25262AFOF/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX25262AFOF/VY+?
MAX25262AFOF/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX25262AFOF/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 MAX25262AFOF/VY+?
For technical support, including MAX25262AFOF/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX25262AFOF/VY+ requirements.
6.How does Aetrix verify that MAX25262AFOF/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX25262AFOF/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 MAX25262AFOF/VY+ meets industry standards.
7.What is the process for return or replacement of MAX25262AFOF/VY+?
All MAX25262AFOF/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX25262AFOF/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 MAX25262AFOF/VY+ part is unused and in its original packaging.
Return procedure for MAX25262AFOF/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX25262AFOF/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…
