My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX25249ATPAV/VY+T
- Part No.:
- MAX25249ATPAV/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
MAX25249ATPAV/VY+T.pdf
- Description:
- ASIL B MINI PMIC FOR CAMERA SENS
- Quantity:
- Payment:
- Shipping:
Inventory:1,182
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX25249ATPAV/VY+T from Analog Devices is a four-output automotive-grade PMIC for camera power management, integrating one 1A high-voltage buck (5V–36V input, 5V fixed output), two 1.2A low-voltage bucks (0.8V–3.9875V adjustable), and one low-noise LDO (50dB PSRR at 1kHz) for imager rails. It features ±1.5% output voltage accuracy, ASIL B compliance, and operates from –40°C to +125°C.
For engineers reviewing the MAX25249ATPAV/VY+T datasheet, MAX25249ATPAV/VY+T pinout, MAX25249ATPAV/VY+T application, or MAX25249ATPAV/VY+T equivalent, key selection criteria include its 2.2MHz fixed-frequency PWM operation, factory-set sequencing via EN23/EN4, OV/UV monitoring with ±1.3% accuracy, RESET signaling, and AEC-Q100 qualification for surround-view and rear-view camera systems.
Technical Context
The MAX25249ATPAV/VY+T implements current-mode, forced-PWM control across all three synchronous buck converters to ensure stable transient response and noise immunity in EMI-sensitive camera modules. Its 2.2MHz switching frequency enables full-ceramic filter design and reduces external component count while maintaining tight regulation under dynamic load steps typical of high-megapixel image sensors.
Integrated diagnostics include redundant internal reference, OV/UV comparators feeding a push-pull or open-drain RESET output, and overtemperature/short-circuit protection. Sequencing is controlled externally via EN23 (enables OUT2/OUT3 jointly) and EN4 (enables OUT4), with factory-programmed output voltages eliminating external resistor networks for sensor rail configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 36V - supports direct connection to automotive battery or PoC supply without pre-regulation |
| OUT1 Output | 5V fixed, 1A - powers downstream low-voltage bucks and provides stable HV rail for serializer interface |
| OUT2/OUT3 Output Range | 0.8V–3.9875V in 12.5mV steps - matches precise core and I/O voltage requirements of modern CMOS image sensors |
| OUT4 LDO PSRR | 50dB at 1kHz - suppresses switching noise from adjacent bucks to preserve image sensor analog performance |
| Output Voltage Accuracy | ±1.5% over load, line, temperature - ensures reliable operation of sensitive camera subsystems without margining |
| OV/UV Monitoring Accuracy | ±1.3% - enables precise fault detection on all four outputs for ASIL B-compliant system diagnostics |
| Switching Frequency | 2.2MHz fixed - allows use of small 0805/0603 ceramic capacitors and minimizes EMI in compact camera modules |
Pinout & Package
MAX25249ATPAV/VY+T is housed in a 3.5mm × 3.5mm, 20-pin TQFN package with exposed thermal pad (pin 20). The package supports high-power density layout and efficient heat dissipation in space-constrained camera ECUs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | High-voltage input supply | Accepts 5V–36V input; connects directly to battery or PoC source |
| OUT1 | Primary buck output | Delivers regulated 5V/1A to power secondary converters and serializer logic |
| OUT2, OUT3 | Secondary buck outputs | Each delivers up to 1.2A at user-configurable voltages for sensor core/I/O rails |
| OUT4 | LDO output | Low-noise 0.8V–3.3V rail for image sensor analog supply; PSRR critical for SNR |
| EN23 | Enable for OUT2/OUT3 | Controls power-up sequencing of dual low-voltage rails; supports staggered startup |
| EN4 | Enable for OUT4 | Independent enable for LDO; allows late activation after buck stabilization |
| RESET | Fault indicator output | Push-pull or open-drain signal indicating OV/UV/fault condition on any output |
| PGOOD | Power-good status | Active-high signal confirming all outputs are within regulation tolerance |
| SS1, SS2, SS4 | Soft-start control | External capacitors set ramp rates for OUT1, OUT2/OUT3, and OUT4 independently |
| FB1, FB2, FB3 | Feedback inputs | Resistor-divider nodes for adjustable OUT2/OUT3; OUT1 uses internal 5V reference |
Key Features
| Feature | Design Value |
|---|---|
| ASIL B compliance | Meets ISO 26262 requirements for safety-critical camera power delivery in ADAS systems |
| Programmable spread-spectrum modulation | Reduces peak radiated emissions by spreading switching energy across 2.2MHz ±X% band |
| Factory-set output voltages | Eliminates external feedback resistors for common sensor configurations, reducing BOM count and layout area |
| Integrated low-RDS(ON) switches | Enables >92% efficiency at full load and simplifies PCB routing vs discrete FET+controller solutions |
| Redundant internal reference | Ensures robust OV/UV monitoring even if primary reference fails - required for ASIL B diagnostic coverage |
Applications
| Surround-View Camera System | Rear-View Camera Module |
|---|---|
Use Scenario: Four-camera ADAS system requiring synchronized, low-noise power for 8MP+ image sensors and GMSL2 serializers. IC Role / Device Role / Timing Role: Centralized power manager delivering sequenced, monitored rails to sensor cores, I/O, and analog supplies. Use Value: Enables single-chip solution replacing three discrete DC-DCs + LDO, reducing board area by 40% and improving thermal uniformity. | Use Scenario: Compact backup camera ECU mounted near license plate, exposed to wide temperature swings and vibration. IC Role / Device Role / Timing Role: Primary power IC providing regulated, fault-monitored supplies for imager, ISP, and video encoder. Use Value: AEC-Q100 Grade 1 rating and –40°C to +125°C operation ensure reliability in unheated exterior environments. |
| Front-Facing Driver Monitoring Camera | In-Cabin Occupancy Detection Camera |
Use Scenario: Steering-column-mounted driver attention system using NIR-illuminated 4MP sensor with strict EMI limits. IC Role / Device Role / Timing Role: Supplies clean, low-ripple power to sensor analog front-end and illumination LED drivers. Use Value: 50dB LDO PSRR at 1kHz prevents switching noise from coupling into sensor analog path, preserving facial recognition accuracy. | Use Scenario: Dashboard-integrated occupancy sensor using global-shutter RGB-IR camera operating continuously during vehicle sleep mode. IC Role / Device Role / Timing Role: Provides always-on LDO rail (OUT4) and selectively powered bucks (OUT2/OUT3) for ultra-low-quiescent operation. Use Value: Factory-programmed sequencing and soft-start minimize inrush current during wake-up, avoiding brownout in shared vehicle power domain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail camera PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX25249BATPAV/VY+T | Revised version with enhanced ESD robustness and tighter UV lockout threshold (±1.0% vs ±1.3%) | Preferred for new designs targeting higher EMC immunity and stricter fault detection in Gen 3 surround-view systems | Select MAX25249BATPAV/VY+T for designs requiring latest revision; MAX25249ATPAV/VY+T remains valid for legacy production and cost-sensitive programs |
| TPS653211AQRHBRQ1 | Three-output PMIC (2 bucks + 1 LDO); no integrated OV/UV monitoring on LDO; lower max current (1A per buck) | Suitable for entry-level rear-view cameras without ASIL B requirement or advanced diagnostics | Choose TPS653211AQRHBRQ1 only when ASIL B compliance and four-rail flexibility are not required |
Compared with MAX25249BATPAV/VY+T, the MAX25249ATPAV/VY+T offers identical functionality and pinout but slightly relaxed UV monitoring accuracy; versus TPS653211AQRHBRQ1, it adds a fourth rail, ASIL B support, and tighter voltage monitoring - critical for high-reliability ADAS camera systems.
Availability
MAX25249ATPAV/VY+T is available at Aetrix Electronics and suitable for surround-view camera systems, rear-view camera modules, and driver-monitoring ECUs requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant power management.
Supply support for MAX25249ATPAV/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 MAX25249 series belongs to Analog Devices' automotive power management portfolio, designed specifically to consolidate power delivery for multi-sensor ADAS camera systems while meeting ISO 26262 functional safety requirements.
FAQ
What is the input voltage range supported by the MAX25249ATPAV/VY+T?
The MAX25249ATPAV/VY+T supports an input voltage range of 5V to 36V, enabling direct connection to automotive battery rails or power-over-coax (PoC) sources without external pre-regulation. This wide range accommodates cold-crank (5V) and load-dump (36V) transients common in 12V vehicle electrical systems, and is validated per ISO 7637-2 pulse requirements.
Does the MAX25249ATPAV/VY+T provide independent enable control for each output rail?
No - the MAX25249ATPAV/VY+T groups enables functionally: EN23 controls both OUT2 and OUT3 simultaneously, while EN4 controls only OUT4. OUT1 is always active when IN is present. This sequencing architecture simplifies timing control for camera sensor power-up sequences where core and I/O rails must be coordinated, and the LDO activated last for noise isolation.
Is the MAX25249ATPAV/VY+T qualified for automotive applications?
Yes, the MAX25249ATPAV/VY+T is AEC-Q100 qualified (Grade 1, –40°C to +125°C) and compliant with ASIL B per ISO 26262. It includes redundant internal references, OV/UV monitoring on all outputs with ±1.3% accuracy, and fault reporting via RESET - all verified for use in safety-critical camera systems such as surround-view and driver-monitoring ECUs.
What is the purpose of the spread-spectrum frequency modulation in the MAX25249ATPAV/VY+T?
The programmable spread-spectrum frequency modulation in the MAX25249ATPAV/VY+T reduces peak radiated electromagnetic emissions by dithering the 2.2MHz switching frequency across a defined bandwidth. This feature helps camera modules meet CISPR 25 Class 5 EMI limits without adding shielding or ferrites, especially critical in compact, densely packed ADAS sensor housings.
Can the MAX25249ATPAV/VY+T be used with image sensors requiring non-standard output voltages?
Yes - OUT2 and OUT3 support 0.8V to 3.9875V in 12.5mV steps, covering standard sensor core (0.8V–1.2V) and I/O (1.8V–3.3V) rails. While OUT1 is fixed at 5V, OUT2/OUT3 can be configured via external resistive dividers on FB2/FB3 pins. Factory-programmed versions like MAX25249ATPAV/VY+T also offer preset voltages to eliminate external components for common configurations.
MAX25249ATPAV/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) Synchronous (3), Linear (LDO) (1)
- Number of Outputs:
- 4
- Frequency - Switching:
- 2.2MHz
- Voltage/Current - Output 1:
- 5V, 1A
- Voltage/Current - Output 2:
- 0.8V ~ 3.9875V, 1.2A
- Voltage/Current - Output 3:
- 0.8V ~ 3.9875V, 1.2A
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- Yes
- Voltage - Supply:
- 5V ~ 36V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 20-WETQFN (3.5x3.5)
MAX25249ATPAV/VY+T FAQ
1.How can I place an order for MAX25249ATPAV/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX25249ATPAV/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 MAX25249ATPAV/VY+T reliable?
The price and inventory of MAX25249ATPAV/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 MAX25249ATPAV/VY+T is usually 5 days.
3.What payment methods are accepted for MAX25249ATPAV/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX25249ATPAV/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX25249ATPAV/VY+T?
MAX25249ATPAV/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX25249ATPAV/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 MAX25249ATPAV/VY+T?
For technical support, including MAX25249ATPAV/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX25249ATPAV/VY+T requirements.
6.How does Aetrix verify that MAX25249ATPAV/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX25249ATPAV/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 MAX25249ATPAV/VY+T meets industry standards.
7.What is the process for return or replacement of MAX25249ATPAV/VY+T?
All MAX25249ATPAV/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX25249ATPAV/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 MAX25249ATPAV/VY+T part is unused and in its original packaging.
Return procedure for MAX25249ATPAV/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX25249ATPAV/VY+T 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
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…
