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Analog Devices Inc./Maxim Integrated MAX20096ATJ/VY+
- Part No.:
- MAX20096ATJ/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- LED Drivers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX20096ATJ/VY+.pdf
- Description:
- IC LED DRIVER CTRLR PWM 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:722
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Product details
Overview
MAX20096ATJ/VY+ from Maxim Integrated is a dual-channel, high-voltage synchronous buck LED controller for automotive exterior lighting. It regulates LED current via proprietary average current-mode control (no loop compensation required), supports 4.5V–65V input, operates up to 1MHz switching frequency, and provides SPI-readback of channel currents, output voltages, and junction temperature. It drives high-brightness LED strings in adaptive front-lighting systems.
For engineers reviewing the MAX20096ATJ/VY+ datasheet, MAX20096ATJ/VY+ pinout, MAX20096ATJ/VY+ application, or MAX20096ATJ/VY+ equivalent, key selection criteria include its 32-pin side-wettable TQFN package, -40°C to +125°C automotive qualification, integrated thermal warning/thermal shutdown, analog+PWM dimming support per channel, and real-time current/voltage/temperature telemetry via SPI.
Technical Context
The MAX20096ATJ/VY+ integrates two independent synchronous buck controllers with bottom-FET current sensing and proprietary average current-mode control-eliminating external compensation components while maintaining stable ~1MHz switching frequency across load and line variations. Each channel features dedicated TON pins for programmable frequency setting and separate CSP/CSN inputs for accurate current-sense amplifier operation.
Its SPI interface enables full telemetry: 8-bit ADC reads of ILED (±2%FS gain/offset error), VOUT scaling, and MON_TEMP[7:0] (1°C resolution over -40°C to +125°C). Protection includes per-channel overvoltage (2.5V threshold, 22mV hysteresis), short-fault detection (50–400mV configurable), and thermal shutdown at 165°C with 15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 65V - supports wide automotive battery transients including cold-crank and load-dump conditions. |
| Switching Frequency | Up to 1MHz - enables compact magnetics and reduces EMI filter size in space-constrained headlamp modules. |
| Current Sense Accuracy | ±2% gain error, ±2%FS offset error - ensures precise LED current regulation critical for DRL and matrix lighting compliance. |
| Thermal Shutdown Threshold | 165°C with 15°C hysteresis - protects against sustained overload while allowing safe recovery after fault clearance. |
| SPI Interface Speed | Up to 4MHz clock - enables fast readback of 8-bit current, voltage, and temperature data without interrupting real-time LED control. |
| Operating Temperature | -40°C to +125°C ambient - qualified for under-hood and headlamp housing environments per AEC-Q100 Grade 0. |
| VCC Regulator Output | 5.0V ±125mV (10mA load) - powers internal logic and external circuitry; UVLO thresholds at 4.1V (rising) / 3.85V (falling). |
Pinout & Package
MAX20096ATJ/VY+ uses a thermally enhanced 32-pin side-wettable TQFN package (5mm × 5mm, 0.5mm pitch) with exposed pad (EP) for PCB-level thermal management. The package supports automated optical inspection (AOI) and improves solder joint reliability in automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX1, LX2 | Switching node outputs | Connect to inductor ends; require low-inductance layout to minimize switching losses and EMI. |
| BST1, BST2 | High-side gate drive bootstrap supplies | Each requires 0.1μF ceramic capacitor to respective LX pin; enables n-channel high-side MOSFET drive. |
| DH1, DH2 | High-side gate drivers | Drive gates of external n-channel MOSFETs; sourcing/sinking resistance ≤5Ω ensures fast edge rates. |
| DL1, DL2 | Low-side gate drivers | Drive gates of synchronous rectifiers; sinking resistance ≤3.5Ω maintains tight dead-time control (20ns). |
| CSP1/CSN1, CSP2/CSN2 | Current sense differential inputs | Measure current through low-side MOSFET source; enable accurate average current regulation without shunt resistor. |
| REFI1, REFI2 | Analog dimming reference inputs | Set default LED current via resistor divider; fail-safe mode clamps at 1.3V and triggers zero-current threshold at 0.18V. |
| DIM1, DIM2 | PWM dimming inputs | Accept 0.2V–3V analog or external PWM (80Hz–2kHz); internal ramp generator provides 200Hz default dimming with 180° phase shift. |
| TON1, TON2 | Frequency-setting pins | Resistor-to-VIN + capacitor-to-AGND sets channel-specific switching frequency; supports asymmetric channel operation. |
| CSB, SCLK, SDI, SDO | SPI interface signals | Enable readback of ILED, VOUT, MON_TEMP, and fault status; CSB active-low, 4MHz max clock, 3-wire interface. |
| RESETB | Active-low reset input | Toggles configuration mode between analog control pins and SPI register mapping; 25ns pulse width minimum. |
| IOUTV1, IOUTV2 | Current monitor outputs | Unity-gain buffered analog outputs (5V/V gain) proportional to LED current; used for closed-loop feedback or diagnostics. |
| OUT1, OUT2 | Output voltage feedback inputs | Accept scaled-down output voltage via resistor divider; internal 2.5V reference enables overvoltage protection at 2.5V ±22mV. |
Key Features
| Feature | Design Value |
|---|---|
| No compensation required | Proprietary average current-mode control eliminates external RC networks, reducing BOM count and layout sensitivity. |
| Per-channel dimming flexibility | Independent analog (REFI) and PWM (DIM) inputs per channel enable mixed dimming strategies for matrix beam shaping. |
| Ultra-fast fault response | Short-fault detection activates within one switching cycle (≤100ns), preventing LED string damage during open/short events. |
| Real-time thermal monitoring | On-die temperature sensor with SPI-readable MON_TEMP[7:0] provides 1°C resolution for predictive thermal derating. |
| Automotive-grade reliability | AEC-Q100 qualified, -40°C to +125°C operation, and side-wettable TQFN package ensure long-term performance in harsh environments. |
Applications
| Adaptive Front-Lighting System (AFS) | Daytime Running Light (DRL) Module |
|---|---|
Use Scenario: Dynamic beam pattern adjustment using individually addressable LED segments in automotive headlamps. IC Role / Device Role / Timing Role: Dual-channel current controller enabling independent on/off and dimming of LED strings per segment. Use Value: Maintains constant current regulation even when LEDs are shorted/opened mid-operation, enabling pixel-level beam control without flicker. |
Use Scenario: High-efficiency, thermally stable illumination for daytime visibility in passenger vehicles. IC Role / Device Role / Timing Role: Primary LED driver managing two parallel high-current LED strings with synchronized PWM dimming. Use Value: 90%+ efficiency across 1A–3A output range and thermal shutdown at 165°C ensure consistent lumen output over vehicle lifetime. |
| Matrix LED Headlamp Control Unit | Commercial Vehicle Fog Light Assembly |
Use Scenario: Precision current control for >100 individually switchable LEDs in high-resolution headlamp arrays. IC Role / Device Role / Timing Role: Dual synchronous buck controller providing scalable current regulation with SPI telemetry for closed-loop calibration. Use Value: 8-bit ADC readback of ILED and MON_TEMP enables per-string current trimming and thermal derating-critical for ISO 11270 compliance. |
Use Scenario: Robust, transient-tolerant fog light driver for trucks and off-road vehicles operating in extreme ambient temperatures. IC Role / Device Role / Timing Role: High-input-voltage LED controller handling 24V nominal + 100V load-dump transients with thermal warning at 150°C. Use Value: 4.5V–65V input range and -40°C to +125°C rating ensure uninterrupted operation during cold cranking and desert heat exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel high-voltage LED controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20097ATJ/V+ (same family) | No SPI interface; replaces CSB/SCLK/SDI/SDO/RESETB pins with FLTB open-drain fault flag. | Lacks telemetry capability but offers simpler fault signaling for cost-sensitive non-telematic designs. | Select MAX20097ATJ/V+ when real-time current/voltage/temperature readback is unnecessary and board space allows 28-pin TSSOP. |
| LM3492-Q1 (TI) | Single-channel, no integrated current-sense amplifier; requires external shunt and op-amp for current regulation. | Supports only one LED string; lacks per-channel dimming inputs and thermal monitoring. | Choose LM3492-Q1 only for single-string applications where SPI telemetry and dual-channel independence are not required. |
Compared with MAX20096ATJ/VY+, the MAX20097ATJ/V+ removes telemetry but simplifies layout and reduces component count, while the LM3492-Q1 trades integration for lower channel count and no built-in current sensing-making MAX20096ATJ/VY+ uniquely suited for adaptive, multi-string automotive lighting requiring diagnostic visibility.
Availability
MAX20096ATJ/VY+ is available at Aetrix Electronics and suitable for automotive exterior lighting, adaptive front-lighting systems, and commercial vehicle LED modules requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MAX20096ATJ/VY+ 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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets.
The MAX20096ATJ/VY+ belongs to Maxim's automotive LED driver product line, designed specifically for high-reliability, thermally demanding exterior lighting applications requiring precision current regulation, fault resilience, and embedded diagnostics.
FAQ
What is the maximum switching frequency supported by the MAX20096ATJ/VY+?
The MAX20096ATJ/VY+ supports a maximum switching frequency of 1MHz, set independently per channel using external R-C networks on TON1 and TON2 pins. This high-frequency capability enables smaller inductors and capacitors, reducing solution size in space-constrained headlamp assemblies while maintaining stable current regulation across input and load variations.
Does the MAX20096ATJ/VY+ integrate current-sense amplifiers, and what is their accuracy?
Yes, the MAX20096ATJ/VY+ integrates two matched current-sense amplifiers (CSA1/CSA2) with 5.0V/V typical gain and ±2% gain error, ±2%FS offset error. They measure current through the low-side MOSFET source (CSP/CSN inputs), eliminating the need for external shunt resistors and enabling high-accuracy LED current regulation essential for photometric compliance in automotive lighting.
How does the SPI interface of the MAX20096ATJ/VY+ support diagnostics and system monitoring?
The MAX20096ATJ/VY+ SPI interface enables real-time readback of 8-bit ADC values for LED current (ILED), scaled output voltage (VOUT), and junction temperature (MON_TEMP). With 4MHz clock support and dedicated registers, it delivers diagnostic data without interrupting PWM dimming or current regulation-enabling closed-loop calibration, thermal derating, and fault logging in adaptive lighting ECUs.
What protection features are included in the MAX20096ATJ/VY+?
The MAX20096ATJ/VY+ includes per-channel overvoltage protection (2.5V threshold, 22mV hysteresis), short-fault detection (configurable 50–400mV thresholds), inductor current-limit protection, thermal warning (150°C), and thermal shutdown (165°C with 15°C hysteresis). These features operate autonomously without MCU intervention, ensuring robust LED string protection during transients or failures.
Is the MAX20096ATJ/VY+ qualified for automotive applications, and what is its temperature rating?
Yes, the MAX20096ATJ/VY+ is AEC-Q100 qualified and specified for operation from -40°C to +125°C ambient temperature. Its 32-pin side-wettable TQFN package, thermal characteristics (θJA = 36°C/W on 4-layer board), and integrated thermal monitoring make it suitable for under-hood and headlamp housing environments in passenger and commercial vehicles.
MAX20096ATJ/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- No
- Number of Outputs:
- 2
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 65V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 1MHz
- Dimming:
- Analog, PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 32-TQFN-EP (5x5)
MAX20096ATJ/VY+ FAQ
1.How can I place an order for MAX20096ATJ/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20096ATJ/VY+ 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 MAX20096ATJ/VY+ reliable?
The price and inventory of MAX20096ATJ/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20096ATJ/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20096ATJ/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20096ATJ/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20096ATJ/VY+?
MAX20096ATJ/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20096ATJ/VY+ 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 MAX20096ATJ/VY+?
For technical support, including MAX20096ATJ/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20096ATJ/VY+ requirements.
6.How does Aetrix verify that MAX20096ATJ/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20096ATJ/VY+ 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 MAX20096ATJ/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20096ATJ/VY+?
All MAX20096ATJ/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20096ATJ/VY+, 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 MAX20096ATJ/VY+ part is unused and in its original packaging.
Return procedure for MAX20096ATJ/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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