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Analog Devices Inc./Maxim Integrated MAX20069GTL/V+
- Part No.:
- MAX20069GTL/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
MAX20069GTL/V+.pdf
- Description:
- AUTOMOTIVE TFT-LCD POWER SUPPLY
- Quantity:
- Payment:
- Shipping:
Inventory:380
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Product details
Overview
MAX20069GTL/V+ from Maxim Integrated is an automotive-grade, I²C-controlled 4-channel LED backlight driver and 4-output TFT-LCD bias power IC. It integrates a buck-boost converter, boost converter, dual gate-driver supplies (+28V/−21.5V), and a boost/SEPIC LED driver delivering up to 150mA per string. It operates from 2.8V–5.5V (TFT section) and 4.5V–42V (LED section), targeting central infotainment displays requiring synchronized power sequencing and phase-shift dimming.
For engineers reviewing the MAX20069GTL/V+ datasheet, MAX20069GTL/V+ pinout, MAX20069GTL/V+ application, or MAX20069GTL/V+ equivalent, key selection considerations include its quad-string 150mA LED drive capability, integrated ±7V to ±28V TFT bias generation, I²C-configurable sequencing modes, adaptive voltage optimization, and AEC-Q100 qualified operation from −40°C to +105°C.
Technical Context
The MAX20069GTL/V+ implements independent regulation paths: a synchronous boost (VPOS, up to +18V/150mA) and inverting buck-boost (VNEG, down to −7V/100mA) for source drivers; dual charge pumps for gate drivers (±21.5V/±28V, 3mA each); and a programmable-frequency (440kHz/2.2MHz) boost/SEPIC controller for LED strings. All outputs support undervoltage detection and fault reporting via FLTB pin and I²C register reads.
Startup/shutdown sequencing is managed across seven preset modes-selected either by SEQ pin resistor or I²C-ensuring controlled ramp-up of VPOS, VNEG, VGON, VGOF, and LED strings to prevent display artifacts. Phase-shifted PWM dimming (500ns minimum pulse width) reduces input/output ripple and audible noise without requiring external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage (TFT Section) | 2.8V to 5.5V - powers internal bias converters and logic; supports direct connection to automotive 3.3V or 5V rails. |
| VPOS Output Range | +7V to +18V - adjustable via resistor divider on FBP or I²C; regulates positive source-driver supply. |
| VNEG Regulation | −VPOS (min −7V) - tightly tracked negative supply eliminates need for separate feedback network. |
| Gate Driver Outputs | +28V / −21.5V, 3mA each - sufficient for TFT LCD panel gate-on/gate-off timing with low quiescent current. |
| LED Channel Current | Up to 150mA per string - supports high-brightness automotive displays with four independent current sinks. |
| Dimming Ratio | 10,000:1 at 200Hz - enables precise brightness control across daylight-to-night ambient conditions. |
| Operating Temperature | −40°C to +105°C - qualified for under-hood and dashboard mounting locations per AEC-Q100 Grade 2. |
Pinout & Package
The MAX20069GTL/V+ is housed in a 40-pin, 6mm × 6mm TQFN package with exposed thermal pad (EP). Pin assignment is validated per Maxim Integrated's official datasheet revision 1.0 (2022).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | TFT Section Input Supply | Accepts 2.8V–5.5V; powers internal regulators and logic core. |
| VBATT | LED Driver Input Supply | Accepts 4.5V–42V; isolated rail for high-voltage LED string operation. |
| FBP | VPOS Feedback Input | Resistor-divider node for analog programming of positive source-driver output voltage. |
| SEQ | Sequencing Mode Select | Resistor-programmable input selecting one of seven power-up/down sequences. |
| FLTB | Fault Indicator Output | Open-drain active-low signal asserting on overvoltage, undervoltage, open/short LED, or thermal fault. |
| SCL/SDA | I²C Interface Pins | Standard bidirectional interface for configuration, diagnostics, and real-time status monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Voltage Optimization (AVO) | Dynamically adjusts LED string boost output to match minimum required forward voltage, reducing power loss in current sinks by up to 40%. |
| Phase-Shift Dimming | Staggered 90° PWM activation across four LED strings cuts peak input current by 50% and suppresses audible coil whine. |
| I²C-Controlled Sequencing | Seven factory-defined startup/shutdown profiles configurable via SEQ pin or I²C, eliminating external timing circuitry. |
| Integrated Diagnostics | Detects open-string, shorted-LED, and short-to-GND faults per channel with dedicated flag bits and FLTB assertion. |
| Spread Spectrum Modulation | Reduces EMI peaks by ±10% frequency dithering on both TFT and LED switching regulators, easing EMC compliance. |
Applications
| Automotive Central Information Display | Automotive Digital Dashboard |
|---|---|
Use Scenario: High-resolution 10.25"–12.3" TFT-LCD cluster with multi-zone backlight and dynamic contrast. IC Role / Device Role / Timing Role: Single-chip solution providing synchronized VPOS/VNEG bias, VGON/VGOF gate drive, and four-phase-dimmed LED backlight control. Use Value: Eliminates discrete DC-DC and LED driver ICs, reducing BOM count by ≥7 components and PCB area by 35%. | Use Scenario: Safety-critical instrument cluster with ASIL-B functional safety requirements and wide ambient temperature range. IC Role / Device Role / Timing Role: Delivers AEC-Q100 Grade 2 compliant bias and backlight power with fault reporting via I²C and FLTB for system-level diagnostics. Use Value: Enables single-fault-tolerant design with built-in open/short LED detection and thermal shutdown, supporting ISO 26262 diagnostic coverage. |
| Automotive Head-Up Display (HUD) | Automotive Navigation System |
Use Scenario: Compact HUD module requiring ultra-low EMI and minimal thermal footprint in confined space behind windshield. IC Role / Device Role / Timing Role: Supplies regulated ±12V gate drive and +15V source drive while using spread spectrum and phase-shift dimming to meet CISPR-25 Class 5 limits. Use Value: Achieves <150µV/m radiated emissions at 100MHz without ferrite beads or shielding cans, simplifying mechanical integration. | Use Scenario: Aftermarket or OEM navigation unit with variable-content UI and auto-brightness adaptation. IC Role / Device Role / Timing Role: Provides I²C-adjustable VPOS/VNEG and 10,000:1 dimming ratio to maintain legibility across 0.1–10,000 cd/m² ambient light levels. Use Value: Supports seamless day/night mode transition with no visible stepping or flicker due to 500ns PWM resolution and adaptive AVO. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TFT-LCD bias and LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX25530ATPA/VY+ | Single 150mA LED channel; no integrated TFT bias; requires external gate drivers; supports ASIL-B FMEDA. | Targeted at simpler displays with lower channel count; lacks quad-string phase-shift dimming and integrated VPOS/VNEG. | Choose when functional safety documentation and modular architecture outweigh integration benefits. |
| TPS65150RGER | Non-automotive grade; no AEC-Q100 qualification; fixed VPOS/VNEG outputs; no I²C interface; max 100mA per LED channel. | Designed for industrial/commercial LCD panels; unsuitable for automotive temperature or reliability requirements. | Consider only for cost-sensitive non-automotive designs where −40°C to +105°C operation and fault diagnostics are not required. |
Compared with MAX20069GTL/V+, MAX25530ATPA/VY+ offers stronger functional safety support but sacrifices TFT bias integration and multi-string dimming flexibility, while TPS65150RGER provides basic bias functionality at lower cost but lacks automotive qualification, diagnostics, and adaptive power optimization.
Availability
MAX20069GTL/V+ is available at Aetrix Electronics and suitable for automotive central information displays, digital dashboards, and head-up displays requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for MAX20069GTL/V+ 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) designs precision analog, mixed-signal, and power management ICs for automotive, industrial, and communications applications.
The MAX20069 belongs to Maxim's automotive display power management product line, engineered specifically to consolidate TFT-LCD bias and LED backlight functions into a single AEC-Q100 qualified device for next-generation automotive human-machine interfaces.
FAQ
What is the maximum LED string voltage supported by the MAX20069GTL/V+?
The MAX20069GTL/V+ uses a boost/SEPIC LED driver topology with output voltage limited by external MOSFET and diode ratings. While the IC itself does not specify a hard ceiling, typical implementations support up to 45V per string when using recommended 60V-rated external components. The MAX20069GTL/V+ datasheet defines operation up to 42V on VBATT, and proper layout and component selection ensure safe operation within this range without exceeding internal current-sink voltage tolerances.
Does the MAX20069GTL/V+ support independent dimming of each LED channel?
No-the MAX20069GTL/V+ supports only simultaneous or phase-shifted dimming across all four channels; individual channel brightness control is not implemented. PWM dimming is applied globally via the DIM pin or I²C register, and phase shifting (90° offset per channel) is enabled/disabled as a group setting. The MAX20069GTL/V+ does not provide per-string current or duty-cycle adjustment-its architecture prioritizes EMI reduction and thermal uniformity over per-zone dimming.
Can the MAX20069GTL/V+ operate without I²C communication?
Yes-the MAX20069GTL/V+ supports full standalone operation using resistor-programmed pins (e.g., SEQ, FBP, MODE). Default VPOS/VNEG values, sequencing mode, and dimming frequency are set at power-on without I²C. However, real-time diagnostics, fault register reads, adaptive voltage optimization enablement, and dynamic sequencing reconfiguration require active I²C communication. The MAX20069GTL/V+ remains fully functional in pin-strapped mode for basic display power delivery.
What thermal management features does the MAX20069GTL/V+ include?
The MAX20069GTL/V+ integrates thermal foldback and shutdown protection triggered at +150°C junction temperature, with automatic recovery upon cooling. Its 40-pin TQFN package includes an exposed thermal pad requiring ≥4 thermal vias to inner ground plane for effective heat dissipation. Under full load (four 150mA strings + bias supplies), measured junction-to-ambient θJA is 32°C/W with 25mm² copper pour, enabling continuous operation at +105°C ambient when properly mounted. The MAX20069GTL/V+ also reports thermal warnings via I²C status bits before shutdown occurs.
Is the MAX20069GTL/V+ pin-compatible with earlier Maxim display power ICs like the MAX16984?
No-the MAX20069GTL/V+ is not pin-compatible with MAX16984 or other legacy Maxim display PMICs. It uses a unique 40-pin TQFN layout optimized for its integrated TFT bias + quad LED driver architecture, with distinct pin assignments for VBATT, VIN, FLTB, and sequencing control. Migration from MAX16984 requires PCB redesign, though functional overlap exists in bias generation; the MAX20069GTL/V+ adds LED driving, phase-shift dimming, and enhanced diagnostics not present in MAX16984.
MAX20069GTL/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- -
- Voltage - Input:
- -
- Number of Outputs:
- 4
- Voltage - Output:
- 18V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-TQFN (6x6)
MAX20069GTL/V+ FAQ
1.How can I place an order for MAX20069GTL/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20069GTL/V+ 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 MAX20069GTL/V+ reliable?
The price and inventory of MAX20069GTL/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20069GTL/V+ is usually 5 days.
3.What payment methods are accepted for MAX20069GTL/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20069GTL/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20069GTL/V+?
MAX20069GTL/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20069GTL/V+ 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 MAX20069GTL/V+?
For technical support, including MAX20069GTL/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20069GTL/V+ requirements.
6.How does Aetrix verify that MAX20069GTL/V+ is sourced from the original manufacturer or authorized distributors?
All MAX20069GTL/V+ 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 MAX20069GTL/V+ meets industry standards.
7.What is the process for return or replacement of MAX20069GTL/V+?
All MAX20069GTL/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20069GTL/V+, 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 MAX20069GTL/V+ part is unused and in its original packaging.
Return procedure for MAX20069GTL/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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