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Analog Devices Inc./Maxim Integrated MAX21610ATJA/V+T
- Part No.:
- MAX21610ATJA/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- LED Drivers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX21610ATJA/V+T.pdf
- Description:
- IC LED DRIVER CTRLR 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,645
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Product details
Overview
MAX21610ATJA/V+T from Analog Devices is a 16-channel automotive local-dimming backlight driver with SPI interface, designed to sink up to 100mA per channel at -40°C to +125°C, support daisy-chaining of up to 10 devices, and deliver 1% accurate LED current for infotainment display backlighting.
For engineers reviewing the MAX21610ATJA/V+T datasheet, MAX21610ATJA/V+T pinout, MAX21610ATJA/V+T application, or MAX21610ATJA/V+T equivalent, key selection considerations include channel count, thermal warning/shutdown behavior, FB-controlled external DC-DC regulation, programmable spread spectrum, and latch-synchronized video frame dimming.
Technical Context
The MAX21610ATJA/V+T integrates sixteen current-sink channels with independent PWM control per channel and global current setting via SPI. It supports both internal oscillator and external CLKIO-synchronized PWM generation, enabling precise timing alignment across multi-device daisy chains.
Its FB output provides real-time feedback to regulate an external DC-DC converter, minimizing voltage headroom and system power loss. Diagnostics include LED open/short detection, supply overvoltage protection, thermal warning at +115°C, and thermal shutdown at +150°C - all operating within AEC-Q100 Grade 2 temperature range (-40°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel Count | 16 independent current-sink outputs for local dimming zones |
| Max Sink Current per Channel | 100mA at ambient ≤ 25°C; derated with temperature |
| Current Accuracy | ±1% typical over temperature and supply variation |
| Operating Temperature | -40°C to +125°C (AEC-Q100 Grade 2 qualified) |
| PWM Control | Per-channel 16-bit resolution; frequency set internally or via external CLKIO |
| Daisy-Chain Support | Up to 10 devices on single SPI bus, reducing MCU GPIO and routing complexity |
| FB Output Function | Analog feedback signal to dynamically adjust external DC-DC output voltage for minimal headroom |
Pinout & Package
MAX21610ATJA/V+T is housed in a 32-pin TQFN package (5mm × 5mm, 0.5mm pitch) with exposed thermal pad. Pin functions are validated per Analog Devices MAX21610 Rev. 7 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Supply input | 3.3V or 5V logic and core power supply |
| LEDx (x=1–16) | Current-sink output | Drives cathode of LED string; each rated for up to 17V compliance |
| CLKIO | External clock input | Synchronizes PWM frequency across daisy-chained devices |
| FB | Feedback output | Analog voltage proportional to required LED string voltage; controls external DC-DC |
| RST_LAT | Latch input | Edge-triggered sync signal aligning dimming updates to video frame boundaries |
| SDO/SCK/MOSI/MISO | SPI interface | Supports daisy-chain configuration with SDO-to-MOSI cascading |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Spread Spectrum | Reduces EMI peak emissions by modulating switching frequency across ±1.5% range |
| Slew-Rate Controlled Switching | Minimizes high-frequency ringing and conducted noise on LED outputs |
| Phase Shift Programming | Adjusts timing offset between adjacent channels to lower RMS input current ripple |
| Thermal Warning Output | Digital flag asserts at +115°C to enable system-level thermal management before shutdown |
| LED Open/Short Detection | Real-time fault identification per channel with automatic disable and flag reporting |
Applications
| Infotainment Displays | Central Information Displays |
|---|---|
Use Scenario: High-resolution center-stack touchscreen requiring dynamic local dimming for contrast enhancement and glare reduction in daylight. IC Role / Device Role / Timing Role: Local-dimming controller synchronizing 16 backlight zones to video frame timing via RST_LAT input. Use Value: Enables >10,000:1 dynamic contrast ratio while maintaining 1% current matching across zones. | Use Scenario: Driver-facing digital dashboard with variable ambient light conditions and safety-critical brightness consistency. IC Role / Device Role / Timing Role: Precision current sink managing 16 independent LED strings with thermal derating and open-circuit fault detection. Use Value: Ensures luminance stability across -40°C to +125°C and prevents single-point failure from LED string faults. |
| Instrument Clusters | Head-Up Displays (HUD) |
Use Scenario: Analog-style gauge rendering with segmented backlighting where individual zone dimming improves readability during night driving. IC Role / Device Role / Timing Role: SPI-configured dimming engine delivering per-zone PWM with 16-bit resolution and latch-aligned updates. Use Value: Achieves smooth dimming transitions and eliminates visible stepping artifacts in analog needle simulation. | Use Scenario: Compact HUD projection module requiring ultra-low EMI to avoid interference with ADAS radar and camera signals. IC Role / Device Role / Timing Role: EMI-optimized backlight driver using slew-rate control, spread spectrum, and phase-shifted outputs. Use Value: Meets CISPR-25 Class 5 radiated emission limits without additional shielding or filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX25612ATJA/V+T | 12-channel, integrated boost controller, no daisy-chain support, higher integration of power stage | Better suited for space-constrained HUDs needing integrated DC-DC; lacks multi-device synchronization | Select when board area is critical and system uses fewer than 12 dimming zones with no need for daisy chaining |
| TPS92692QPWPRQ1 | 16-channel, analog/digital hybrid control, no spread spectrum, no RST_LAT latch input | Requires external microcontroller for frame-sync logic; less robust EMI performance in high-noise cabins | Select when cost sensitivity outweighs EMI and video-frame sync requirements in non-safety-critical displays |
Compared with MAX25612ATJA/V+T and TPS92692QPWPRQ1, the MAX21610ATJA/V+T uniquely combines 16-channel precision current sinking, daisy-chain scalability, video-latched dimming, and certified low-EMI operation - making it optimal for AEC-Q100-compliant infotainment and instrument cluster systems demanding synchronized local dimming.
Availability
MAX21610ATJA/V+T is available at Aetrix Electronics and suitable for automotive infotainment displays, central information displays, and instrument clusters requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for MAX21610ATJA/V+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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for industrial, automotive, and communications markets.
The MAX21610ATJA/V+T belongs to Analog Devices' automotive LED driver product line, engineered specifically for AEC-Q100-compliant local dimming in high-reliability automotive displays with stringent EMI and thermal constraints.
FAQ
What is the maximum LED string voltage supported by the MAX21610ATJA/V+T?
The MAX21610ATJA/V+T supports up to 17V LED string compliance voltage per channel. This allows direct connection to common automotive LED strings without intermediate level-shifting, provided the external DC-DC supply is regulated accordingly via the FB pin. The device itself operates from 3.3V or 5V VDD, and its current-sink architecture ensures safe operation even when forward voltages vary across temperature and aging.
Does the MAX21610ATJA/V+T support daisy-chaining, and how many devices can be cascaded?
Yes, the MAX21610ATJA/V+T supports daisy-chaining via its SPI interface, allowing up to 10 devices on a single bus. Cascading is achieved by connecting the SDO (serial data out) of one device to the MOSI (master out, slave in) of the next, with shared SCK and CS lines. This reduces MCU pin count and PCB routing complexity in multi-zone display systems - a capability confirmed in the Rev. 7 datasheet for MAX21610ATJA/V+T.
How does the FB pin function in the MAX21610ATJA/V+T?
The FB pin on the MAX21610ATJA/V+T provides an analog feedback signal proportional to the required LED string voltage headroom. It drives the error amplifier of an external DC-DC converter to dynamically adjust output voltage - minimizing power dissipation and heat generation. This closed-loop regulation is active during all operating modes of the MAX21610ATJA/V+T, including dimming transitions and thermal derating events.
What diagnostic features are built into the MAX21610ATJA/V+T?
The MAX21610ATJA/V+T includes LED open/short detection per channel, supply overvoltage protection, thermal warning at +115°C, and thermal shutdown at +150°C. All diagnostics generate flag outputs readable via SPI and can trigger automatic channel disable. These features are fully operational across the full -40°C to +125°C range and are integral to the MAX21610ATJA/V+T's AEC-Q100 Grade 2 qualification.
Is the MAX21610ATJA/V+T AEC-Q100 qualified, and what grade does it meet?
Yes, the MAX21610ATJA/V+T is AEC-Q100 qualified to Grade 2, supporting operation from -40°C to +125°C ambient. This qualification covers stress testing for temperature cycling, humidity, ESD, and latch-up, and applies to the full 32-pin TQFN package variant. The Grade 2 rating confirms suitability for under-hood and cabin-display applications where reliability under thermal and electrical stress is mandatory.
MAX21610ATJA/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- -
- Voltage - Output:
- 17V
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- -
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFN (5x5)
MAX21610ATJA/V+T FAQ
1.How can I place an order for MAX21610ATJA/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX21610ATJA/V+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 MAX21610ATJA/V+T reliable?
The price and inventory of MAX21610ATJA/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX21610ATJA/V+T is usually 5 days.
3.What payment methods are accepted for MAX21610ATJA/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX21610ATJA/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX21610ATJA/V+T?
MAX21610ATJA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX21610ATJA/V+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 MAX21610ATJA/V+T?
For technical support, including MAX21610ATJA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX21610ATJA/V+T requirements.
6.How does Aetrix verify that MAX21610ATJA/V+T is sourced from the original manufacturer or authorized distributors?
All MAX21610ATJA/V+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 MAX21610ATJA/V+T meets industry standards.
7.What is the process for return or replacement of MAX21610ATJA/V+T?
All MAX21610ATJA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX21610ATJA/V+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 MAX21610ATJA/V+T part is unused and in its original packaging.
Return procedure for MAX21610ATJA/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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