My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX25262AFOB/VY+T
- Part No.:
- MAX25262AFOB/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 17-PowerWFQFN
- Datasheet:
-
MAX25262AFOB/VY+T.pdf
- Description:
- IC REG BUCK ADJ/1V 2A 17FC2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,430
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX25262AFOB/VY+T 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 MAX25262AFOB/VY+T datasheet, MAX25262AFOB/VY+T pinout, MAX25262AFOB/VY+T application, or MAX25262AFOB/VY+T equivalent, key selection considerations include its 20ns minimum on-time for skip-free 3.3V output at 24VIN, pin-selectable spread spectrum, PGOOD monitoring, 98% max duty cycle for undervoltage transients, and FCQFN-17 (3.5mm × 3.75mm) EMI-optimized flip-chip package.
Technical Context
The MAX25262AFOB/VY+T implements current-mode control with internal compensation, fixed 2.1MHz oscillator (with optional 400kHz variant), and PLL-based external clock synchronization via SYNC pin. It supports both skip mode (FSYNC = GND) and forced PWM mode (FSYNC = BIAS or external clock) to balance light-load efficiency and EMI performance.
Its architecture integrates a 5V internal BIAS LDO (bypassable via EXTVCC), cycle-by-cycle overcurrent protection with hiccup recovery, thermal shutdown at +170°C, and UVLO on BIAS (3.1V rising / 2.65V falling). The device uses a symmetrical FCQFN-17 package with dual SUP and PGND pins to minimize loop inductance and enhance EMI immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 65V - supports cold-crank (4.5V) and load-dump (60V+) conditions in 12V/24V automotive systems. |
| Output Current | 2A continuous - sufficient for powering microcontrollers, sensors, and display logic in instrument clusters. |
| Quiescent Current | 3.5μA typical at no load - enables compliance with OEM standby power budgets (<100μA) for always-on modules. |
| Switching Frequency | 2.1MHz fixed - allows use of compact 2.2μH inductors and reduces board area vs. lower-frequency alternatives. |
| Min On-Time | 20ns typical - ensures stable 3.3V output from 24VIN without pulse-skipping, critical for AM radio band EMI control. |
| Duty Cycle Max | 98% - maintains regulation during severe undervoltage transients (e.g., engine cranking down to 5V). |
| PGOOD Accuracy | ±2% output voltage window (93–97% rising, 91.5–95.5% falling) - enables precise power sequencing in multi-rail automotive ECUs. |
| AEC-Q100 Grade | Grade -40°C to +125°C ambient - qualified for under-hood and dashboard-mounted applications per automotive reliability standard. |
Pinout & Package
MAX25262AFOB/VY+T is housed in a 3.5mm × 3.75mm, 17-pin FCQFN (flip-chip quad flat no-lead) package with exposed thermal pad (EP), optimized for low EMI and high thermal performance in automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PGOOD) | Open-drain power-good indicator | Signals output regulation status; requires external pull-up; asserts low on undervoltage/overvoltage faults with 47μs debounce. |
| 2 (EN) | Active-high enable input | High-voltage tolerant (up to +70V); enables converter only when BIAS exceeds 3.1V UVLO threshold. |
| 3,9 (SUP) | High-side supply input | Dual symmetric inputs for 2.2μF + 0.1μF local bypass; powers internal gate drivers and bias LDO. |
| 5,7 (PGND) | Power ground return | Dual low-inductance paths for LX current return; must be tied directly to input capacitor ground. |
| 6 (LX) | Switch node connection | Drives external inductor; requires tight layout to minimize EMI; rated for -0.3V to SUP+0.3V transient tolerance. |
| 10 (BST) | Bootstrap capacitor terminal | Connects 0.1μF ceramic capacitor to LX; supplies gate drive voltage for high-side FET. |
| 11 (GND) | Analog ground reference | Separate from PGND; connects feedback divider and error amplifier; must tie to PGND at single point near IC. |
| 12 (BIAS) | Internal LDO output | 5V regulated output; powers internal circuitry; bypassed with ≥2.2μF ceramic capacitor to GND. |
| 13 (FB) | Feedback voltage input | Connects to internal 1V reference; tied to BIAS for fixed 5V/3.3V outputs or to external resistor divider for 1V–20V adjustment. |
| 14 (EXTVCC) | External bias supply input | Bypasses internal LDO when 3.25V–5.5V applied; improves light-load efficiency and reduces thermal dissipation. |
| 15 (OUT) | Output voltage sense point | Used with internal preset divider when FB = BIAS; provides accurate remote sensing for load regulation. |
| 16 (SYNC) | Frequency synchronization input | Selects skip mode (GND) or forced PWM (BIAS/external clock); accepts 1.8–2.6MHz external sync signal with PLL lock. |
| 17 (SPS) | Spread-spectrum enable | Pull high to enable ±6% triangular frequency modulation at 4.5kHz (2.1MHz) or 0.8kHz (400kHz) for EMI reduction. |
| EP | Exposed thermal pad | Must be soldered to input supply plane (same net as SUP pins) for thermal conduction and EMI shielding. |
Key Features
| Feature | Design Value |
|---|---|
| EMI-optimized flip-chip packaging | Symmetrical SUP/PGND pin layout and exposed thermal pad reduce radiated emissions by >10dB vs. standard QFN in 30–1000MHz band. |
| Pin-selectable spread spectrum | ±6% frequency dithering centered at fSW eliminates narrowband EMI peaks without requiring external components. |
| 20ns minimum on-time | Enables direct 24VIN-to-3.3V conversion at 2.1MHz without pulse skipping-critical for AM radio interference mitigation. |
| 98% maximum duty cycle | Maintains output regulation during 5V cold-crank events in 12V systems without external boost assist. |
| Integrated 5V BIAS LDO with EXTVCC switchover | Reduces internal power loss by up to 40% when external 5V rail is connected, improving full-load efficiency by ~1.5%. |
| AEC-Q100 Grade 1 qualification | Validated for operation from -40°C to +125°C ambient, including 1000-hour HTOL and temperature cycling per automotive reliability requirements. |
Applications
| Automotive Instrument Cluster | Navigation Head Unit |
|---|---|
Use Scenario: Powering MCU, TFT display controller, and CAN transceiver in digital dashboards with strict EMI limits near AM/FM antennas. IC Role / Device Role / Timing Role: Primary 3.3V/5V buck regulator delivering 2A with PGOOD sequencing and thermal fault reporting. Use Value: 20ns min on-time and spread-spectrum mode suppress AM-band harmonics below CISPR 25 Class 5 limits without added filtering. | Use Scenario: Supplying infotainment SoC core and I/O rails in head units subjected to 65V load-dump transients. IC Role / Device Role / Timing Role: High-input-voltage step-down converter with 98% duty cycle enabling uninterrupted operation during cranking. Use Value: 3.5μA quiescent current and AEC-Q100 qualification ensure compliance with OEM sleep-mode power budgets and lifetime reliability targets. |
| Double-Battery Automotive System | Distributed DC Power Node |
Use Scenario: Regulating 24V battery rail to 5V for ADAS camera modules in vehicles with dual 12V/24V architectures. IC Role / Device Role / Timing Role: Isolated secondary buck stage converting boosted 24V to clean 5V with PGOOD interlock for safety-critical vision processing. Use Value: 65V absolute max rating and cycle-by-cycle current limiting protect against load-dump spikes and short-circuit faults in harsh under-hood environments. | Use Scenario: Local power conversion for zone controllers in software-defined vehicle electrical architectures. IC Role / Device Role / Timing Role: Compact, thermally robust buck converter enabling distributed 5V/3.3V generation near point-of-load. Use Value: FCQFN-17 package with EP and dual SUP/PGND pins achieves 28°C/W θJA on 4-layer board-reducing heatsink need by 50% vs. SOIC-8 alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX25263AFOB/VY+T | 3A output current rating; identical pinout, package, and feature set; higher ILIM (3.4–4.75A typ) and RONHS (108–250mΩ). | Preferred for higher-current loads (e.g., radar processors, multi-camera hubs) where 2A margin is insufficient. | Select MAX25263AFOB/VY+T when peak load exceeds 1.8A or transient current demands require >2.5A headroom. |
| LM61480QRNXTQ1 | 3.5A output; 3.5V–36V input; 2.1MHz fixed freq; no spread spectrum; different pinout (16-pin WQFN); lacks EXTVCC switchover. | Suitable for non-65V applications (e.g., body control modules) where load-dump immunity is less critical. | Choose LM61480QRNXTQ1 only if input never exceeds 36V and EMI reduction relies solely on layout-not active spread spectrum. |
Compared with MAX25263AFOB/VY+T, the MAX25262AFOB/VY+T offers tighter thermal design margins at 2A loads while retaining identical EMI features and AEC-Q100 qualification; versus LM61480QRNXTQ1, it delivers superior 65V survivability and integrated spread-spectrum capability but requires careful PCB layout due to FCQFN symmetry constraints.
Availability
MAX25262AFOB/VY+T is available at Aetrix Electronics and suitable for automotive instrument clusters, navigation head units, and distributed DC power nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX25262AFOB/VY+T 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 MAX25262/MAX25263 product line was developed specifically for demanding automotive power conversion applications-emphasizing ultra-low IQ, wide VIN range, AEC-Q100 compliance, and EMI-hardened packaging for next-generation E/E architectures.
FAQ
What is the maximum input voltage rating for the MAX25262AFOB/VY+T?
The MAX25262AFOB/VY+T has an absolute maximum input voltage rating of +70V on the EN and SUP pins, with recommended continuous operation from 3.5V to 65V. This 65V upper limit ensures reliable performance during automotive load-dump transients defined by ISO 7637-2 Pulse 5a, making the MAX25262AFOB/VY+T suitable for 24V commercial vehicle systems.
Does the MAX25262AFOB/VY+T support adjustable output voltages?
Yes, the MAX25262AFOB/VY+T supports programmable output voltages from 1V to 20V using an external resistor divider connected between OUT, FB, and GND. Its internal 1V feedback reference (VFB = 0.985–1.015V) enables precise regulation; fixed 3.3V and 5V outputs are also available by connecting FB to BIAS, depending on the specific variant.
How does the spread-spectrum feature work on the MAX25262AFOB/VY+T?
The MAX25262AFOB/VY+T implements spread spectrum by modulating the switching frequency ±6% around its nominal value (2.1MHz or 400kHz) using a triangular waveform-4.5kHz for 2.1MHz operation and 0.8kHz for 400kHz. Enabled via the SPS pin, this feature reduces peak EMI amplitudes without altering component selection or layout, directly addressing CISPR 25 radiated emissions requirements.
What thermal protection mechanisms are built into the MAX25262AFOB/VY+T?
The MAX25262AFOB/VY+T incorporates thermal shutdown that activates at +170°C junction temperature, with 15°C hysteresis for automatic recovery. It also features undervoltage lockout on the BIAS rail (3.1V rising / 2.65V falling) and cycle-by-cycle current limiting with hiccup-mode fault recovery-ensuring robust operation under overload, short-circuit, or elevated ambient conditions in automotive environments.
Can the MAX25262AFOB/VY+T be synchronized to an external clock source?
Yes, the MAX25262AFOB/VY+T supports external clock synchronization via its SYNC pin, using a phase-locked loop (PLL) to lock to input frequencies from 250kHz to 2.6MHz. This enables deterministic switching alignment across multiple converters in complex automotive ECUs, reducing beat-frequency noise and simplifying EMI filter design-while preserving all internal protections and regulation accuracy.
MAX25262AFOB/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 17-PowerWFQFN
- Packaging:
- Tape & Reel (TR)
- 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 (3.3V)
- Voltage - Output (Max):
- 12V
- 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)
MAX25262AFOB/VY+T FAQ
1.How can I place an order for MAX25262AFOB/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX25262AFOB/VY+T 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 MAX25262AFOB/VY+T reliable?
The price and inventory of MAX25262AFOB/VY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX25262AFOB/VY+T is usually 5 days.
3.What payment methods are accepted for MAX25262AFOB/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX25262AFOB/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX25262AFOB/VY+T?
MAX25262AFOB/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX25262AFOB/VY+T 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 MAX25262AFOB/VY+T?
For technical support, including MAX25262AFOB/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX25262AFOB/VY+T requirements.
6.How does Aetrix verify that MAX25262AFOB/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX25262AFOB/VY+T 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 MAX25262AFOB/VY+T meets industry standards.
7.What is the process for return or replacement of MAX25262AFOB/VY+T?
All MAX25262AFOB/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX25262AFOB/VY+T, 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 MAX25262AFOB/VY+T part is unused and in its original packaging.
Return procedure for MAX25262AFOB/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX25262AFOB/VY+T 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…
