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Analog Devices Inc./Maxim Integrated MAX17067EUA+T
- Part No.:
- MAX17067EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX17067EUA+T.pdf
- Description:
- IC REG BST SEPIC ADJ 1.8A 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,825
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Product details
Overview
The MAX17067EUA+T from Maxim Integrated is a high-efficiency, current-mode, fixed-frequency boost DC-DC converter with an integrated 2.4A/0.15Ω n-channel MOSFET, operating from 2.6V to 4.0V input and delivering up to 18V output at 90% efficiency. It features pin-selectable 640kHz or 1.2MHz switching frequency, programmable soft-start via external capacitor, and integrated input voltage clamp for overvoltage protection-designed for space-constrained LCD display power supplies.
For engineers reviewing the MAX17067EUA+T datasheet, MAX17067EUA+T pinout, MAX17067EUA+T application, or MAX17067EUA+T equivalent, key selection criteria include its 8-pin µMAX package height (<1.1mm), dual-frequency selectability, ±0.1% feedback reference accuracy (1.24V), thermal shutdown at +160°C, and compatibility with low-ESR ceramic output capacitors in ultra-thin TFT-LCD bias rail designs.
Technical Context
The MAX17067EUA+T employs a current-mode PWM architecture with slope compensation to ensure stability across wide duty cycles (up to 95%), enabling fast transient response and low-noise operation. Its error amplifier (transconductance: 100–440 μS, gain: 3800 V/V) drives COMP to control peak inductor current, while internal comparators and clock logic coordinate switching timing and cycle-skipping at light loads.
Functional integration includes an active-low SHDN input with <1μA leakage, FREQ pin with 5μA internal pulldown for default 640kHz operation, and SS pin charged at 4.5μA typical to enable controlled inrush limiting. The IN supply clamp circuit limits pin voltage to 6.05–6.60V using an external series resistor, protecting against production-line transients without external TVS diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.6V to 4.0V - supports single-cell Li+ or 3.3V system rails without level-shifting. |
| Output Voltage Range | Adjustable from VIN to 18V - enables generation of panel bias voltages (e.g., +9V, +27V, –9V) via FB resistor divider. |
| Switching Frequency | Pin-selectable 640kHz or 1.2MHz - allows trade-off between inductor size (3.3μH @ 1.2MHz) and EMI filtering ease. |
| Integrated MOSFET | 2.4A rated, 0.15Ω RON - reduces external component count and conduction losses in compact layouts. |
| Feedback Reference | 1.24V ±0.013V - ensures precise output regulation (±0.1%) with minimal line/load regulation drift (0.15%/V). |
| Quiescent Current | 2.5mA (switching), 30μA (shutdown) - extends battery life in always-on display subsystems. |
| Thermal Shutdown | +160°C with 20°C hysteresis - prevents latch-up during sustained overload or poor heatsinking. |
Pinout & Package
Package: 8-pin µMAX® (U8+1), 3.05mm × 3.05mm × 1.1mm profile - optimized for ultra-low-height LCD panel assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COMP | Compensation node for error amplifier | Connects external RC network (e.g., 121kΩ + 620pF) to stabilize loop dynamics and suppress output ripple. |
| 2 - FB | Feedback input | Senses output via resistor divider; 1.24V reference sets VOUT = 1.24V × (1 + R1/R2); bias current ≤200nA minimizes divider error. |
| 3 - SHDN | Active-low shutdown control | Pulls low to disable switching, reduce IIN to 30μA, and discharge SS capacitor; VIH ≥0.7×VIN, VIL ≤0.3×VIN. |
| 4 - GND | Power and signal ground | Star-ground connection point for LX, IN, and feedback traces to minimize noise coupling and EMI. |
| 5 - LX | Switch node | Drives external inductor/catch diode; requires short, low-inductance routing to limit voltage spikes and EMI. |
| 6 - IN | Input supply | Bypassed with ≥1μF ceramic capacitor; internal clamp limits voltage to 6.4V (typ) when used with external RIN. |
| 7 - FREQ | Frequency select input | Logic-low → 640kHz; logic-high (tied to IN) → 1.2MHz; internal 5μA pulldown enables default low-frequency operation. |
| 8 - SS | Soft-start control | Charged at 4.5μA to 0.5–1.5V range; controls inductor peak current ramp; discharged to GND when SHDN = low. |
Key Features
| Feature | Design Value |
|---|---|
| High-efficiency boost conversion | 90% peak efficiency at 250mA/9V output enables thermally constrained LCD backlight and gate driver supplies. |
| Ultra-low-profile solution | Total height <1.1mm with 3.3μH inductor and ceramic capacitors - meets mechanical stack-up requirements for slim AMLCD modules. |
| Programmable soft-start | External capacitor sets inrush current ramp rate; prevents input voltage droop and output overshoot during power-up. |
| Integrated input voltage clamp | Clamps IN pin to 6.4V (typ) using external RIN, eliminating need for discrete TVS in industrial display environments. |
| Fast transient response | Current-mode control with slope compensation delivers stable regulation under 10mA→200mA load steps within 100μs. |
Applications
| AMLCD Panel Bias Supply | Portable Medical Display Power |
|---|---|
Use Scenario: Generating +9V, +27V, and –9V rails for TFT-LCD source/gate drivers in handheld ultrasound or patient monitors. IC Role / Device Role / Timing Role: Primary step-up regulator controlling output via FB divider; COMP loop stabilizes multi-output cross-regulation. Use Value: 1.2MHz operation enables 3.3μH inductor and <1.1mm total height - critical for portable device thickness constraints. |
Use Scenario: Powering high-resolution diagnostic displays from a single 3.3V system rail in battery-operated imaging equipment. IC Role / Device Role / Timing Role: High-efficiency boost converter supplying regulated 9V to display controller ICs with minimal thermal dissipation. Use Value: 90% efficiency and 30μA shutdown current extend battery runtime while maintaining stable VOUT under dynamic load changes. |
| Industrial HMI Display Module | Automotive Infotainment Backlight |
Use Scenario: Providing isolated bias voltages for touch-sensitive industrial HMIs exposed to 12V supply transients on factory floors. IC Role / Device Role / Timing Role: Input-clamped boost regulator protecting downstream circuitry from >6V supply spikes without external clamping components. Use Value: Integrated 6.4V IN clamp eliminates TVS diode BOM cost and PCB area while meeting IEC 61000-4-4 surge immunity requirements. |
Use Scenario: Driving LED backlight strings in automotive infotainment head units powered from 3.3V domain with strict EMI limits. IC Role / Device Role / Timing Role: Low-noise, fixed-frequency boost converter minimizing conducted EMI through 640kHz/1.2MHz selectable switching. Use Value: Pin-selectable frequency allows EMI tuning to avoid sensitive AM/FM bands while maintaining <100mVPP output ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher input range (2.7V–12V), 4A switch, but larger 14-pin WQFN package (3.5mm × 3.5mm). | Supports wider input sources (e.g., 5V USB), but incompatible with sub-1.1mm height requirement. | Select when higher input voltage tolerance or output current (>2.4A) is needed; not suitable for ultra-low-profile LCD modules. |
| LT3467EDD#TRPBF | Fixed 1.3MHz frequency, no FREQ pin; lower quiescent current (1.2mA), but no integrated input clamp. | Lacks IN clamp circuit - requires external TVS for overvoltage protection in harsh environments. | Choose for ultra-low-IQ battery-powered devices where input transients are absent; adds BOM cost and layout complexity for clamping. |
Compared with TPS61088RHLR and LT3467EDD#TRPBF, the MAX17067EUA+T uniquely combines µMAX package height <1.1mm, pin-selectable frequency, and integrated IN clamp - making it the only option for space- and reliability-critical AMLCD bias supplies requiring zero-height overhead and production-line surge resilience.
Availability
The MAX17067EUA+T is available at Aetrix Electronics and suitable for LCD display power supplies, portable medical device displays, and industrial HMI modules requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.
Supply support for MAX17067EUA+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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and consumer applications.
The MAX17067EUA+T belongs to Maxim's low-noise, high-density DC-DC converter product line, engineered specifically for ultra-thin flat-panel display power architectures requiring minimal board area and robust transient immunity.
FAQ
What is the maximum output voltage supported by the MAX17067EUA+T?
The MAX17067EUA+T supports an adjustable output voltage up to 18V, set via the FB resistor divider (VOUT = 1.24V × (1 + R1/R2)). This capability enables direct generation of common LCD panel bias rails such as +9V, +12V, and +18V without cascaded stages. Operation beyond 18V is not specified and may compromise reliability or regulation accuracy.
How does the MAX17067EUA+T implement input overvoltage protection?
The MAX17067EUA+T integrates an internal IN supply clamp circuit that limits the IN pin voltage to 6.05–6.60V (typical 6.4V) when used with an external series resistor (RIN). This eliminates the need for discrete TVS diodes in applications subject to production-line voltage spikes. The clamp activates automatically during overvoltage events, protecting internal circuitry without external control logic.
Can the MAX17067EUA+T operate with ceramic output capacitors only?
Yes, the MAX17067EUA+T is explicitly designed for use with low-ESR ceramic output capacitors. Its external compensation pin (COMP) allows full loop stabilization using standard RC networks (e.g., 121kΩ + 620pF), and the current-mode architecture maintains stability even with near-zero ESR outputs. This avoids the bulk and aging issues of tantalum or electrolytic alternatives.
What is the purpose of the FREQ pin on the MAX17067EUA+T?
The FREQ pin on the MAX17067EUA+T selects switching frequency: pulled low (GND) for 640kHz operation, or tied to IN for 1.2MHz operation. An internal 5μA pulldown ensures default 640kHz behavior if left unconnected. This flexibility allows designers to optimize inductor size (smaller at 1.2MHz) versus EMI filter complexity (easier at 640kHz) without changing the IC.
Does the MAX17067EUA+T require an external catch diode?
Yes, the MAX17067EUA+T requires an external Schottky catch diode (e.g., MBRS130LT1) connected between LX and VOUT. While the IC integrates a 2.4A/0.15Ω n-channel MOSFET for the high-side switch, it does not integrate the synchronous rectifier or freewheeling path. A low-VF, fast-recovery Schottky diode is mandatory for proper boost topology operation and efficiency.
MAX17067EUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.6V
- Voltage - Input (Max):
- 4V
- Voltage - Output (Min/Fixed):
- 2.6V
- Voltage - Output (Max):
- 18V
- Current - Output:
- 1.8A (Switch)
- Frequency - Switching:
- 640kHz, 1.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX17067EUA+T FAQ
1.How can I place an order for MAX17067EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17067EUA+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 MAX17067EUA+T reliable?
The price and inventory of MAX17067EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17067EUA+T is usually 5 days.
3.What payment methods are accepted for MAX17067EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17067EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17067EUA+T?
MAX17067EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17067EUA+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 MAX17067EUA+T?
For technical support, including MAX17067EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17067EUA+T requirements.
6.How does Aetrix verify that MAX17067EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX17067EUA+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 MAX17067EUA+T meets industry standards.
7.What is the process for return or replacement of MAX17067EUA+T?
All MAX17067EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17067EUA+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 MAX17067EUA+T part is unused and in its original packaging.
Return procedure for MAX17067EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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