My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX25249BATPJ/VY+T
- Part No.:
- MAX25249BATPJ/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
MAX25249BATPJ/VY+T.pdf
- Description:
- ASIL B MINI PMIC FOR CAMERA SENS
- Quantity:
- Payment:
- Shipping:
Inventory:1,567
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX25249BATPJ/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) - all with ±1.5% output voltage accuracy and ASIL B compliance for surround-view and rear-view camera modules.
For engineers reviewing the MAX25249BATPJ/VY+T datasheet, MAX25249BATPJ/VY+T pinout, MAX25249BATPJ/VY+T application, or MAX25249BATPJ/VY+T equivalent, key selection criteria include its 2.2MHz fixed-frequency PWM operation, factory-set sequencing via EN23/EN4, OV/UV monitoring accuracy (±1.3%), AEC-Q100 qualification, and 3.5mm × 3.5mm 20-pin TQFN package optimized for space-constrained automotive imaging systems.
Technical Context
The MAX25249BATPJ/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 applications. Its integrated low-RDS(ON) switches, redundant internal reference, and push-pull/open-drain configurable RESET output support robust fault reporting in ASIL B–compliant systems.
Sequencing is controlled externally via EN23 (enables both OUT2 and OUT3) and EN4 (enables OUT4), while factory-programmed output voltages eliminate external resistor networks. Spread-spectrum frequency modulation reduces peak radiated emissions without compromising 2.2MHz switching stability.
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 primary rail for serializer ICs. |
| OUT2/OUT3 Output Range | 0.8V–3.9875V in 12.5mV steps - enables precise biasing of image sensor cores and MCU I/O rails. |
| OUT4 LDO PSRR | 50dB at 1kHz - suppresses switching noise from adjacent bucks to preserve imager analog performance. |
| Output Voltage Accuracy | ±1.5% over load, line, and temperature - ensures reliable operation of sensitive pixel arrays and high-speed SerDes. |
| OV/UV Monitoring Accuracy | ±1.3% around set point - enables accurate fault detection for safety-critical camera power domains. |
| Switching Frequency | 2.2MHz fixed - allows full ceramic capacitor design and minimizes EMI filter footprint. |
Pinout & Package
Package: 3.5mm × 3.5mm, 20-pin TQFN (exposed pad), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | High-voltage input supply | Accepts 5V–36V unregulated input; connects directly to battery or PoC source. |
| OUT1 | Primary buck output | Delivers regulated 5V/1A to power secondary converters and serializer ICs. |
| OUT2, OUT3 | Secondary buck outputs | Each delivers up to 1.2A at user-programmable voltage (0.8V–3.9875V); powers imager core and I/O rails. |
| OUT4 | LDO output | Low-noise 50dB PSRR rail for analog sensor blocks; independent enable via EN4. |
| EN23 | Enable for OUT2 and OUT3 | Active-high logic input; controls power-up sequencing of dual low-voltage rails. |
| EN4 | Enable for OUT4 LDO | Active-high logic input; enables independent sequencing of noise-sensitive analog rail. |
| RESET | Fault indicator output | Push-pull or open-drain configurable; asserts on OV/UV/fault conditions per monitored rail. |
| PGND, AGND | Power and analog ground | Separated grounds minimize noise coupling between switching and analog sections. |
| EPAD | Thermal pad | Internally connected to GND; requires PCB thermal via array for 125°C operation. |
Key Features
| Feature | Design Value |
|---|---|
| ASIL B compliance | Meets ISO 26262 requirements for camera power domain safety integrity in ADAS systems. |
| Factory-set output voltages | Eliminates external feedback resistors, reducing BOM count and layout sensitivity for mass production. |
| Spread-spectrum modulation | Reduces peak radiated EMI by >10dB, easing CISPR-25 Class 5 compliance in vehicle cabins. |
| Redundant internal reference | Enables cross-checking of OV/UV comparators for fault-tolerant monitoring in safety-critical paths. |
| Current-mode forced-PWM | Maintains constant 2.2MHz switching under all load conditions, improving EMI predictability vs. PFM modes. |
Applications
| Surround-View Camera Module | Rear-View Camera System |
|---|---|
Use Scenario: Four-corner fisheye cameras feeding stitched video to ADAS ECU. IC Role / Device Role / Timing Role: Primary power manager delivering sequenced, low-noise rails to image sensors, SerDes transceivers, and local MCUs. Use Value: Enables compact 3.5mm × 3.5mm module design with single-chip power solution meeting ASIL B and CISPR-25 requirements. | Use Scenario: High-resolution backup camera with HDR capability and real-time video processing. IC Role / Device Role / Timing Role: Supplies clean 5V (OUT1), 1.2V (OUT2), 2.8V (OUT3), and 1.8V (OUT4) rails with synchronized startup and fault reporting. Use Value: ±1.5% output accuracy ensures consistent pixel response across temperature; 50dB LDO PSRR preserves SNR in analog front-end. |
| Front-Facing Driver Monitoring Camera | In-Cabin Occupancy Detection Camera |
Use Scenario: Eye-tracking and facial expression analysis using near-IR illumination. IC Role / Device Role / Timing Role: Powers imager, IR LED driver, and low-power vision processor with precise voltage control and thermal fault protection. Use Value: Factory-programmed voltages reduce calibration overhead; -40°C to +125°C operation supports hood-mounted placement. | Use Scenario: Wide-dynamic-range occupancy sensing in varying cabin lighting and temperature conditions. IC Role / Device Role / Timing Role: Delivers stable, low-noise power to global-shutter CMOS sensor and companion ISP with OV/UV fault logging. Use Value: ±1.3% OV/UV monitoring accuracy enables reliable diagnostic logging for UNECE R155 compliance. |
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 |
|---|---|---|---|
| MAX25248ATPJ/VY+T | Three-output variant (no OUT4 LDO); identical OUT1/OUT2/OUT3 specs and pinout. | Requires external LDO for imager analog rail; increases board area and component count. | Select when system-level noise budget allows separate LDO implementation and cost optimization is prioritized. |
| TPS653221AQPWPRQ1 | Three-buck + LDO, but LDO rated only 300mA; no spread-spectrum; lower PSRR (35dB @ 1kHz). | Suitable for lower-resolution cameras where analog rail current < 300mA and EMI margin is relaxed. | Choose if existing TI-based design infrastructure exists and 50dB PSRR is not required for sensor analog section. |
Compared with MAX25248ATPJ/VY+T and TPS653221AQPWPRQ1, the MAX25249BATPJ/VY+T uniquely integrates a 1.2A, 50dB PSRR LDO in the same 3.5mm × 3.5mm footprint - eliminating external filtering components while maintaining ASIL B diagnostics and 2.2MHz EMI control essential for high-definition automotive imaging.
Availability
MAX25249BATPJ/VY+T is available at Aetrix Electronics and suitable for surround-view camera modules, rear-view camera systems, and driver-monitoring units requiring stable component supply, AEC-Q100 qualification, and ASIL B–compliant power management.
Supply support for MAX25249BATPJ/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/MAX25249B product line targets compact, safety-compliant power solutions for next-generation automotive camera systems - specifically engineered to replace discrete DC-DC + LDO combinations in ASIL B–rated ADAS vision modules.
FAQ
What is the maximum output current capability of each rail in the MAX25249BATPJ/VY+T?
The MAX25249BATPJ/VY+T delivers 1A from OUT1 (5V fixed), up to 1.2A from each of OUT2 and OUT3 (adjustable 0.8V–3.9875V), and up to 1.2A from OUT4 (LDO). All outputs maintain ±1.5% voltage accuracy across load, line, and temperature. The LDO's 50dB PSRR at 1kHz ensures minimal noise coupling into sensitive imager analog circuits, making the MAX25249BATPJ/VY+T ideal for high-fidelity automotive camera power delivery.
Does the MAX25249BATPJ/VY+T support programmable output voltages for OUT2 and OUT3?
Yes, the MAX25249BATPJ/VY+T supports factory-programmed output voltages for OUT2 and OUT3 in 12.5mV steps from 0.8V to 3.9875V. These settings are laser-trimmed during manufacturing and do not require external resistors or I²C configuration. This feature simplifies layout, improves long-term stability, and accelerates time-to-market for camera modules using the MAX25249BATPJ/VY+T - especially in high-volume automotive production where BOM reduction is critical.
How does the MAX25249BATPJ/VY+T meet ASIL B functional safety requirements?
The MAX25249BATPJ/VY+T meets ASIL B through integrated diagnostics including redundant internal voltage references, OV/UV monitoring with ±1.3% accuracy, push-pull/open-drain configurable RESET output, and overtemperature/overcurrent protection. It is AEC-Q100 qualified Grade 1 (–40°C to +125°C) and designed to ISO 26262 requirements for camera power domains. These features are validated in the MAX25249BATPJ/VY+T silicon and documented in its safety manual - enabling seamless integration into ASIL B–compliant ADAS architectures.
Can the MAX25249BATPJ/VY+T be used with power-over-coax (PoC) camera systems?
Yes, the MAX25249BATPJ/VY+T is explicitly designed for PoC camera systems: its OUT1 buck accepts 5V–36V input, matching typical PoC receiver output ranges, and delivers a stable 5V/1A rail to power downstream converters and serializers. The device's 2.2MHz fixed-frequency PWM, spread-spectrum modulation, and all-ceramic capacitor compatibility make it well-suited for PoC environments where EMI control and compact layout are essential - confirming the MAX25249BATPJ/VY+T as a purpose-built solution for modern coax-powered automotive cameras.
What is the thermal performance of the MAX25249BATPJ/VY+T in continuous operation at 125°C ambient?
The MAX25249BATPJ/VY+T is specified for continuous operation from –40°C to +125°C ambient and features an exposed thermal pad (EPAD) internally connected to GND. With proper PCB thermal vias (≥9×0.3mm diameter, filled or plated) connecting EPAD to inner-layer ground planes, the device maintains safe junction temperatures under full 1A/1.2A loads at 125°C ambient. This thermal robustness is validated per AEC-Q100 and enables reliable deployment of the MAX25249BATPJ/VY+T in engine-compartment-proximate or sun-exposed camera housings.
MAX25249BATPJ/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:
- No
- 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)
MAX25249BATPJ/VY+T FAQ
1.How can I place an order for MAX25249BATPJ/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX25249BATPJ/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 MAX25249BATPJ/VY+T reliable?
The price and inventory of MAX25249BATPJ/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 MAX25249BATPJ/VY+T is usually 5 days.
3.What payment methods are accepted for MAX25249BATPJ/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX25249BATPJ/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX25249BATPJ/VY+T?
MAX25249BATPJ/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX25249BATPJ/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 MAX25249BATPJ/VY+T?
For technical support, including MAX25249BATPJ/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX25249BATPJ/VY+T requirements.
6.How does Aetrix verify that MAX25249BATPJ/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX25249BATPJ/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 MAX25249BATPJ/VY+T meets industry standards.
7.What is the process for return or replacement of MAX25249BATPJ/VY+T?
All MAX25249BATPJ/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX25249BATPJ/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 MAX25249BATPJ/VY+T part is unused and in its original packaging.
Return procedure for MAX25249BATPJ/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX25249BATPJ/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…
