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Analog Devices Inc./Maxim Integrated MAX25252ATIA/VY+T
- Part No.:
- MAX25252ATIA/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- -
- Datasheet:
-
MAX25252ATIA/VY+T.pdf
- Description:
- AUTOMOTIVE FRONT CAMERA PMIC WIT
- Quantity:
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Inventory:2,528
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Product details
Overview
MAX25252ATIA/VY+T from Analog Devices is a five-output ASIL B power management IC for automotive camera systems, integrating one 1A high-voltage buck (OUT1, 2.5V–5V), two 1.7A low-voltage bucks (OUT2/OUT3, 0.75V–3.9375V), and two high-PSRR LDOs (LDO4: 0.4A; LDO5: 0.9A), all with ±1.5% output accuracy and OV/UV monitoring across -40°C to +125°C.
For engineers reviewing the MAX25252ATIA/VY+T datasheet, MAX25252ATIA/VY+T pinout, MAX25252ATIA/VY+T application, or MAX25252ATIA/VY+T equivalent, key selection considerations include ASIL B compliance, I²C-programmable voltage sequencing for imager/serializer rails, 2.1MHz fixed-frequency PWM operation enabling all-ceramic designs, and integrated 12-bit temperature monitoring via external NTC.
Technical Context
The MAX25252ATIA/VY+T implements current-mode, forced-PWM control across all three DC-DC converters to ensure stable transient response and noise immunity in EMI-sensitive camera modules. Its 2.1MHz switching frequency supports compact 0402/0603 ceramic capacitors and eliminates need for electrolytics.
I²C interface enables dynamic configuration of output voltages (12.5mV steps for OUT2/OUT3/LDO4/LDO5; 100mV steps for OUT1), startup sequencing order, soft-start timing, and diagnostic thresholds - critical for multi-rail image sensor and serializer power-up coordination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 22V - supports direct connection to automotive battery and PoC (Power over Coax) sources. |
| OUT1 Output | 1A, 2.5V–5V in 100mV steps - powers high-voltage camera sensor bias or serializer interface. |
| OUT2/OUT3 Output | 1.7A each, 0.75V–3.9375V in 12.5mV steps - supplies core and I/O rails of high-megapixel CMOS imagers. |
| LDO4/LDO5 Output | 0.4A / 0.9A, 0.75V–3.9375V in 12.5mV steps - delivers low-noise, high-PSRR power to analog sensor blocks and high-speed serializers. |
| Output Accuracy | ±1.5% over load, line, and temperature - meets ASIL B functional safety requirements for camera power integrity. |
| OV/UV Monitoring | ±1% accuracy per rail - enables reliable fault detection and RESET assertion for system-level diagnostics. |
| Switching Frequency | 2.1MHz fixed - allows full-ceramic filter design, reduces EMI, and improves transient response vs. lower-frequency PMICs. |
Pinout & Package
Package: 5mm × 5mm, 28-pin side-wettable TQFN (exposed pad), RoHS-compliant, AEC-Q100 qualified for automotive use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply | Accepts 3.5V–22V input for all internal regulators; requires local bulk and ceramic decoupling. |
| OUT1 | High-voltage buck output | 1A regulated output (2.5V–5V); connects directly to camera sensor HV rail or serializer VDDIO. |
| OUT2 / OUT3 | Low-voltage buck outputs | Independent 1.7A outputs; configured via I²C for imager core/I/O or serializer rails. |
| LDO4 / LDO5 | Low-noise LDO outputs | 0.4A and 0.9A outputs; high PSRR suppresses switching noise from DC-DC stages for analog sensor blocks. |
| SCL / SDA | I²C interface | Standard bidirectional I²C bus (up to 400kHz) for real-time voltage, sequencing, and fault register access. |
| RESET | Open-drain fault indicator | Asserts low on OV/UV/OT faults; also reports NTC temperature warning and internal diagnostics. |
| NTC_IN | Temperature sense input | Connects to external NTC thermistor; enables ±1.5°C PCB temperature measurement via internal 12-bit ADC. |
Key Features
| Feature | Design Value |
|---|---|
| ASIL B compliance | Validated fault coverage and diagnostic capability per ISO 26262 for camera domain ECUs. |
| I²C programmable sequencing | Enables precise power-up/down order across five rails to prevent latch-up or data corruption in image sensors. |
| 2.1MHz forced-PWM operation | Eliminates frequency variation during load transients, ensuring consistent EMI profile and filter design. |
| Integrated 12-bit temperature ADC | Measures board temperature via external NTC with ±0.096% voltage accuracy - supports thermal derating and safe operating area enforcement. |
| Side-wettable TQFN package | Enables automated optical inspection (AOI) of solder joints - critical for automotive manufacturing traceability and reliability. |
Applications
| Surround-View Camera Module | Rear-View Camera System |
|---|---|
Use Scenario: Four-camera system capturing 360° vehicle surroundings for parking assist and ADAS visualization. IC Role / Device Role / Timing Role: Single-chip power source for all four camera sensors and their serializers, managing independent rail sequencing and fault reporting. Use Value: Reduces BOM count by consolidating five regulators into one ASIL B-compliant IC, minimizing layout area and interconnect complexity. | Use Scenario: High-resolution backup camera with HDR imaging and real-time video processing. IC Role / Device Role / Timing Role: Powers imager core (OUT2), I/O (OUT3), analog front-end (LDO4), and serializer (LDO5), while monitoring rail health via RESET and I²C. Use Value: Ensures ±1.5% rail stability under battery voltage sag and engine cranking, preventing image artifacts or frame loss. |
| Side-View Blind-Spot Camera | Forward-Looking ADAS Camera |
Use Scenario: Compact mirror-mounted camera detecting vehicles in adjacent lanes with minimal latency. IC Role / Device Role / Timing Role: Supplies low-noise power to high-speed MIPI CSI-2 serializer (LDO5) and imager (OUT2/OUT3), synchronized via I²C-controlled startup. Use Value: High PSRR of LDO5 suppresses switching noise from adjacent DC-DC stages, preserving signal integrity on high-speed serial links. | Use Scenario: Front-facing camera for lane departure warning and automatic emergency braking. IC Role / Device Role / Timing Role: Delivers tightly regulated, fault-monitored power to radar-fused vision processor and dual-sensor stack (OUT1 for HV bias, OUT2/OUT3 for cores). Use Value: Integrated OV/UV and temperature diagnostics feed directly into ASIL B safety manager, reducing need for external monitoring ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX25253ATIA/VY+T | Same pinout and feature set, but includes integrated watchdog timer and enhanced I²C error recovery logic. | Preferred for systems requiring autonomous fault recovery without host intervention. | Select MAX25253ATIA/VY+T when watchdog functionality is required for higher ASIL levels or extended diagnostic coverage. |
| TPS65917B1ZWSR | Four-output PMIC (3 buck + 1 LDO); lacks second high-current LDO and NTC-based temperature monitoring. | Targeted at infotainment SoCs rather than camera-specific power trees. | Choose TPS65917B1ZWSR only if system requires fewer rails and does not mandate ASIL B temperature diagnostics. |
Compared with MAX25252ATIA/VY+T, the MAX25253ATIA/VY+T adds watchdog autonomy but shares identical power architecture, while the TPS65917B1ZWSR offers lower integration and no ASIL B-certified thermal monitoring - making MAX25252ATIA/VY+T optimal for safety-critical camera power delivery.
Availability
MAX25252ATIA/VY+T is available at Aetrix Electronics and suitable for surround-view, rear-view, side-view, and forward-looking automotive camera systems requiring stable component supply, AEC-Q100 qualification, and ASIL B functional safety compliance.
Supply support for MAX25252ATIA/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 MAX25252ATIA/VY+T belongs to Analog Devices' automotive PMIC portfolio, engineered specifically to deliver tightly regulated, fault-monitored, and thermally aware power to next-generation camera sensors and high-speed serializers in ADAS and autonomous driving systems.
FAQ
What is the input voltage range supported by the MAX25252ATIA/VY+T?
The MAX25252ATIA/VY+T supports an input voltage range of 3.5V to 22V, enabling direct connection to automotive battery rails and Power over Coax (PoC) interfaces. This wide range accommodates cold-crank (down to ~3.5V) and load-dump (up to 22V) conditions without external protection circuitry, making the MAX25252ATIA/VY+T suitable for robust automotive camera power designs.
Does the MAX25252ATIA/VY+T support I²C programmable voltage sequencing?
Yes, the MAX25252ATIA/VY+T supports full I²C programmable voltage sequencing across all five outputs. Engineers can configure startup/shutdown order, delay times, and voltage ramp rates via its standard I²C interface (up to 400kHz), allowing precise coordination between image sensor cores, I/O domains, and serializers - a key capability implemented in the MAX25252ATIA/VY+T for avoiding initialization conflicts.
What is the purpose of the NTC_IN pin on the MAX25252ATIA/VY+T?
NTC_IN on the MAX25252ATIA/VY+T is an analog input for connecting an external NTC thermistor to enable accurate PCB temperature monitoring. The MAX25252ATIA/VY+T integrates a 12-bit ADC with ±0.096% voltage measurement accuracy, translating resistance changes into temperature readings with ±1.5°C typical accuracy - used for thermal warning (via RESET) and system-level derating decisions.
Is the MAX25252ATIA/VY+T qualified for automotive applications?
Yes, the MAX25252ATIA/VY+T is AEC-Q100 qualified and designed to operate across the full automotive temperature range of -40°C to +125°C. It meets ASIL B functional safety requirements per ISO 26262, including built-in diagnostics such as OV/UV monitoring (±1% accuracy), overtemperature detection, and I²C-accessible fault registers - all verified features of the MAX25252ATIA/VY+T.
How does the 2.1MHz switching frequency benefit camera system designs using the MAX25252ATIA/VY+T?
The 2.1MHz fixed-frequency PWM operation in the MAX25252ATIA/VY+T enables use of small, low-ESR ceramic capacitors (e.g., 0402/0603) without electrolytics, reducing solution size and improving reliability. It also provides consistent EMI behavior and faster load transient response - critical for maintaining clean power in high-resolution camera modules where noise-induced image artifacts must be avoided. This frequency is a defined characteristic of the MAX25252ATIA/VY+T.
MAX25252ATIA/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- -
- Voltage - Input:
- -
- Number of Outputs:
- -
- Voltage - Output:
- -
- Operating Temperature:
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- Grade:
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- Qualification:
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- Supplier Device Package:
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MAX25252ATIA/VY+T FAQ
1.How can I place an order for MAX25252ATIA/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX25252ATIA/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 MAX25252ATIA/VY+T reliable?
The price and inventory of MAX25252ATIA/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 MAX25252ATIA/VY+T is usually 5 days.
3.What payment methods are accepted for MAX25252ATIA/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX25252ATIA/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX25252ATIA/VY+T?
MAX25252ATIA/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX25252ATIA/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 MAX25252ATIA/VY+T?
For technical support, including MAX25252ATIA/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX25252ATIA/VY+T requirements.
6.How does Aetrix verify that MAX25252ATIA/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX25252ATIA/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 MAX25252ATIA/VY+T meets industry standards.
7.What is the process for return or replacement of MAX25252ATIA/VY+T?
All MAX25252ATIA/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX25252ATIA/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 MAX25252ATIA/VY+T part is unused and in its original packaging.
Return procedure for MAX25252ATIA/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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