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Analog Devices Inc./Maxim Integrated MAX17094AETM+
- Part No.:
- MAX17094AETM+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX17094AETM+.pdf
- Description:
- 4A, LOW-NOISE, HIGH-FREQUENCY, S
- Quantity:
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Product details
Overview
MAX17094AETM+ from Maxim Integrated is a highly integrated TFT-LCD power management IC featuring a current-mode step-up DC-DC converter (6–14V output), 250mA LDO, 20MHz rail-to-rail op amp, seven high-voltage level shifters (−10V to +30V), and I²C-programmable VCOM calibrator with nonvolatile memory. It powers source drivers, gate drivers, and backplane bias in notebook display panels.
For engineers reviewing the MAX17094AETM+ datasheet, MAX17094AETM+ pinout, MAX17094AETM+ application, or MAX17094AETM+ equivalent, this device supports fast transient response for pulsed source-driver loads, programmable switching frequency (450kHz–1.2MHz), ±2% LDO accuracy, and production-ready VCOM calibration via 7-bit DAC and I²C interface.
Technical Context
The MAX17094AETM+ integrates five functional blocks on a single die: a current-mode boost regulator with internal 2.5A/150mΩ MOSFET and digital soft-start; a precision LDO (±2% output accuracy, 0.3V dropout at 250mA); a high-slew-rate op amp (45V/µs, 20MHz BW, 150mA drive); seven independent high-voltage level shifters with <32ns rise/fall times; and an I²C-addressable VCOM calibrator using a ratiometric 7-bit DAC and nonvolatile IVR memory.
Its architecture targets thin-film transistor LCD timing and voltage sequencing requirements: the step-up regulator supplies panel source drivers; GON1/GON2/GOFF rails power row/column scan drivers; the op amp drives the AC-coupled LCD backplane; and the VCOM calibrator adjusts panel threshold offset via programmable sink current into the VCOM divider network.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion, dual-cell NiMH, or 3.3V/5V system rails without external regulation. |
| Boost Output Voltage | 6V to 14V - adjustable via FB resistor divider; regulates main source-driver supply (e.g., +8V typical). |
| LDO Output Current | 250mA - delivers stable logic-level supply (e.g., VLOGIC) with ≤1% load regulation across full current range. |
| Op Amp Slew Rate | 45V/µs - enables fast settling of VCOM voltage during frame transitions, critical for flicker suppression. |
| VCOM Calibrator Resolution | 7-bit DAC - provides 128 discrete VCOM offset levels stored in nonvolatile memory for factory calibration retention. |
| Level Shifter Output Range | −10V to +30V - drives TFT gate electrodes directly, eliminating need for external high-voltage level-shifting ICs. |
| Switching Frequency Range | 450kHz to 1.2MHz - set by single external resistor; enables use of ultra-small 4.1µH inductors and ceramic capacitors. |
Pinout & Package
MAX17094AETM+ is housed in a 48-pin, 6mm × 6mm × 0.8mm TQFN-EP package with exposed thermal pad (EP) connected to AGND. The package supports high-density PCB layouts for slim notebook displays and provides low thermal resistance for continuous 2.4A LX RMS current handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN, LIN, AVDD | Power Inputs | IN supplies boost stage; LIN feeds LDO; AVDD powers op amp and internal VL regulator - each requires local ceramic bypassing. |
| FREQ, SS, SET | Configuration Terminals | FREQ sets switching frequency via resistor; SS controls soft-start timing; SET programs full-scale VCOM sink current (VAVDD/(20×RSET)). |
| FB, FBL, COMP | Feedback & Compensation | FB regulates boost output; FBL sets LDO output voltage; COMP accepts RC network (e.g., 40.2kΩ + 1000pF) for loop stability. |
| Y2–Y8, YDCHG | High-Voltage Outputs | Seven level-shifter outputs (Y2–Y8) and discharge driver (YDCHG) swing −10V to +30V with <125ns propagation delay and <32ns edge rates. |
| SCL, SDA, ADDR0, ADDR1 | I²C Interface | Standard 400kHz I²C bus with hardware address selection (ADDR0/ADDR1); enables factory VCOM trim and runtime calibration updates. |
| VCOM, POS, NEG, OUT | VCOM Calibration Block | VCOM is op amp output; POS/NEG are rail-to-rail inputs; OUT sinks programmable current into POS node to adjust VCOM level. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Boost + LDO + Op Amp + Level Shifters + VCOM Calibrator | Reduces BOM count by >7 discrete ICs; eliminates inter-IC layout routing, timing skew, and supply coupling issues in display power trees. |
| Current-Mode Boost Architecture | Delivers fast transient response to pulsed source-driver loads (e.g., 20mA → 300mA in <100μs) without external compensation. |
| Nonvolatile VCOM Memory (IVR) | Retains calibrated VCOM offset across power cycles and temperature; avoids re-trim during field operation or cold start. |
| Rail-to-Rail Op Amp with 150mA Drive | Drives large capacitive VCOM nodes (≥100nF) with minimal droop; supports AC-coupled backplane driving without external buffer stages. |
| Thermal-Overload Protection | Shuts down safely at 160°C junction temperature with 15°C hysteresis; prevents latch-up or permanent damage under sustained overload. |
Applications
| Notebook Display Power | TFT-LCD Panel Bias |
|---|---|
|
Use Scenario: Powering 13.3"–15.6" notebook LCD panels with integrated gate-on/gate-off and source-driver supplies. IC Role / Device Role / Timing Role: Central PMIC generating synchronized VMAIN (+8V), VGON1/VGON2 (+22V), VGOFF (−6.5V), VLOGIC (+3.3V), and VCOM. Use Value: Single-chip solution reduces PCB area by >40% vs. discrete regulators and level shifters; enables <1mm profile designs. |
Use Scenario: Calibrating VCOM voltage to minimize image flicker and grayscale inversion in high-resolution IPS panels. IC Role / Device Role / Timing Role: Programmable VCOM calibrator with 7-bit DAC and nonvolatile memory performs factory-set offset trimming during panel assembly. Use Value: Eliminates manual potentiometer adjustment; ensures consistent VCOM across production batches and operating temperatures. |
| Source Driver Supply | Gate Driver Level Shifting |
|
Use Scenario: Delivering regulated +8V to 12-bit source driver ICs (e.g., SN65LVDS301) during video frame updates. IC Role / Device Role / Timing Role: High-efficiency (>85%) current-mode boost converter with programmable 1.2MHz switching frequency minimizes inductor size. Use Value: Supports rapid load transients (20mA → 1A in 10μs) without output droop, preserving color fidelity during dynamic scenes. |
Use Scenario: Driving TFT gate lines with precise timing in active-matrix OLED or LCD panels requiring ±10V to ±30V swing. IC Role / Device Role / Timing Role: Seven independent high-speed level shifters (Y2–Y8) with <32ns edges and <125ns propagation delay. Use Value: Enables 240Hz refresh rates by meeting tight setup/hold timing margins; replaces multiple discrete HV drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TFT-LCD power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17095AETM+ | Same pinout and feature set; differs only in I²C slave address (0x5A vs. 0x58) and default VCOM calibration settings. | Drop-in replacement where board layout and firmware support dual-address configuration; identical electrical performance. | Select MAX17095AETM+ when multiple MAX17094-based panels require I²C bus isolation without address conflict. |
| RTQ2132B-QT | Single-channel boost + LDO + op amp only; lacks integrated level shifters and VCOM calibrator; uses SPI instead of I²C. | Requires external HV level shifters and separate VCOM DAC circuit; suitable for simpler monochrome or segmented LCDs. | Choose RTQ2132B-QT only for cost-sensitive designs where full TFT functionality is unnecessary and BOM flexibility is prioritized. |
Compared with MAX17094AETM+, MAX17095AETM+ offers identical functionality with address differentiation for multi-panel systems, while RTQ2132B-QT provides partial integration but mandates external components for gate driving and VCOM tuning - making MAX17094AETM+ the only single-package solution for full-color, high-refresh-rate notebook displays.
Availability
MAX17094AETM+ is available at Aetrix Electronics and suitable for notebook computer displays, industrial HMI panels, and medical imaging monitors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX17094AETM+ 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 leader specializing in high-performance analog, mixed-signal, and power management solutions for demanding applications including computing, communications, and industrial systems.
The MAX17094 product line was designed specifically for TFT-LCD display power architectures, integrating all essential voltage rails, timing-critical level shifting, and factory-calibrated VCOM control into one compact package optimized for thin-profile mobile devices.
FAQ
What is the maximum output current capability of the integrated LDO in the MAX17094AETM+?
The MAX17094AETM+ includes a low-dropout linear regulator rated for up to 250mA output current at ≤0.3V dropout voltage. Its output voltage is accurate within ±2% over temperature and load, and it features internal digital soft-start to prevent inrush current during power-up. This LDO supplies logic-level voltages such as VLOGIC for display timing controllers and is fully specified across the −40°C to +85°C operating range.
How does the MAX17094AETM+ implement VCOM calibration, and what memory technology stores the calibration value?
The MAX17094AETM+ implements VCOM calibration using a 7-bit ratiometric DAC that controls a programmable current sink at the OUT pin, adjusting the voltage divider at the op amp's POS input. Calibration values are stored in nonvolatile IVR (Integrated Volatile Register) memory, which retains settings across power cycles without backup battery. The I²C interface allows factory programming and verification during panel assembly.
Can the MAX17094AETM+ drive high-capacitance LCD backplane nodes, and what op amp specifications enable this?
Yes, the MAX17094AETM+ op amp is explicitly designed to drive high-capacitance VCOM nodes (≥100nF) with rail-to-rail inputs/outputs, 45V/µs slew rate, 20MHz bandwidth, and 150mA output current. These specs ensure fast settling (<20μs to ±0.5 LSB) and minimal droop during frame transitions - critical for suppressing flicker in high-resolution TFT panels.
What is the purpose of the SENSE pin on the MAX17094AETM+, and how is it used in system protection?
The SENSE pin on the MAX17094AETM+ connects to a resistor divider from VIN and triggers YDCHG activation when input voltage falls below 1.235V. This provides undervoltage detection for panel discharge: if main supply drops during shutdown or fault, YDCHG pulls the panel to VGON1, safely discharging residual charge and preventing image retention or latch-up. The threshold has 10mV hysteresis for noise immunity.
Does the MAX17094AETM+ support programmable switching frequency, and how is it configured?
Yes, the MAX17094AETM+ supports programmable switching frequency from 450kHz to 1.2MHz via the FREQ pin. A single external resistor (30kΩ to 80kΩ) between FREQ and GND sets the frequency per f(MHz) = 0.015 × RFREQ(kΩ). Leaving FREQ unconnected defaults to ~600kHz. This flexibility allows optimization of inductor size, efficiency, and EMI filtering for specific display power requirements.
MAX17094AETM+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX17094AETM+ FAQ
1.How can I place an order for MAX17094AETM+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17094AETM+ 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 MAX17094AETM+ reliable?
The price and inventory of MAX17094AETM+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17094AETM+ is usually 5 days.
3.What payment methods are accepted for MAX17094AETM+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17094AETM+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17094AETM+?
MAX17094AETM+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17094AETM+ 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 MAX17094AETM+?
For technical support, including MAX17094AETM+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17094AETM+ requirements.
6.How does Aetrix verify that MAX17094AETM+ is sourced from the original manufacturer or authorized distributors?
All MAX17094AETM+ 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 MAX17094AETM+ meets industry standards.
7.What is the process for return or replacement of MAX17094AETM+?
All MAX17094AETM+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17094AETM+, 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 MAX17094AETM+ part is unused and in its original packaging.
Return procedure for MAX17094AETM+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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