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Analog Devices Inc./Maxim Integrated MAX17067EUA+
- Part No.:
- MAX17067EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX17067EUA+.pdf
- Description:
- IC REG BST SEPIC ADJ 1.8A 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:255
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Product details
Overview
MAX17067EUA+ from Maxim Integrated is a high-efficiency, current-mode, fixed-frequency boost DC-DC converter with integrated 0.15Ω n-channel MOSFET, 1.2MHz/640kHz selectable switching frequency, and adjustable output up to 18V - designed for space-constrained LCD display power supplies requiring low-profile (<1.1mm) solutions.
For engineers reviewing the MAX17067EUA+ datasheet, MAX17067EUA+ pinout, MAX17067EUA+ application, or MAX17067EUA+ equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply-chain support for industrial and embedded display power designs.
Technical Context
The MAX17067EUA+ employs current-mode PWM control with slope compensation for stability at high duty cycles, enabling fast transient response and low-noise operation in boost topologies. Its error amplifier (1.24V reference, 3800 V/V gain) drives COMP to regulate peak inductor current via internal current-sense transresistance (0.3 V/A typical).
Switching frequency is user-selectable between 640kHz (FREQ = GND) and 1.2MHz (FREQ = IN), directly impacting external component size and loop bandwidth. The device integrates an input voltage clamp (6.4V typ) with external resistor sizing guidance and thermal shutdown at +160°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +2.6V to +4.0V - supports single-cell Li+ or 3.3V rail inputs without external level shifting. |
| Output Voltage Range | VIN to +18V - adjustable via FB resistor divider; enables TFT-LCD gate drivers (e.g., +27V VGON, –9V VGOFF with charge pumps). |
| Switching Frequency | 640kHz or 1.2MHz (pin-selectable) - determines inductor/capacitor size trade-off: 3.3μH/10μF at 1.2MHz vs. 4.7μH/10μF at 640kHz for 9V/250mA output. |
| Integrated MOSFET | 2.4A current limit, 0.15Ω on-resistance - eliminates external switch, reduces BOM count, and enables >90% efficiency at 500mA load. |
| Soft-Start Control | Programmable via external capacitor (CSS) charged at 4.5μA - prevents inrush current damage to input source and output capacitors during power-up. |
| Quiescent Current | 2.5mA (switching), 30μA (shutdown) - extends battery life in portable LCD systems during active and standby modes. |
| Package | 8-pin μMAX (U8+1, 3.05mm × 3.05mm × 1.1mm) - ultra-low profile for thin display modules; lead-free and RoHS-compliant. |
Pinout & Package
MAX17067EUA+ is housed in an 8-pin μMAX package (3.05mm × 3.05mm × 1.1mm height), optimized for minimal PCB footprint and low-profile LCD panel integration. Pin 1 is COMP; pin 8 is SS. All pins are surface-mount, with GND (pin 4) and LX (pin 5) requiring short, wide traces for EMI and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COMP (1) | Error amplifier output | Connect series RC network to ground for loop compensation; sets integrator zero and high-frequency gain for stable transient response. |
| FB (2) | Feedback input | Monitors output voltage via resistor divider; 1.24V reference enables precise output regulation (e.g., VOUT = 1.24V × (1 + R1/R2)). |
| SHDN (3) | Active-low enable | Pull low to reduce supply current to 30μA; releases to allow soft-start initiation and full converter operation. |
| GND (4) | Power and signal ground | Star-ground connection point for LX, IN, and COMP; must be low-impedance to minimize noise coupling and thermal resistance. |
| LX (5) | Switch node | Drives external inductor and catch diode; high dv/dt requires minimized trace area to suppress EMI and ringing. |
| IN (6) | Input supply | Bypass with ≥1μF ceramic capacitor to GND; internal clamp limits voltage to 6.4V (typ) when used with external series resistor. |
| FREQ (7) | Frequency select | Logic-level input: GND = 640kHz, IN = 1.2MHz; internal 5μA pulldown allows unconnected default to 640kHz. |
| SS (8) | Soft-start control | Charged at 4.5μA to 1.5V to ramp peak inductor current linearly; discharged to GND during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output up to 18V | Enables single-chip generation of multiple LCD bias rails (e.g., +9V, +27V, –9V) without external regulators or transformers. |
| Integrated 0.15Ω MOSFET | Reduces conduction losses and eliminates gate-drive complexity; supports 2.4A peak current for high-current gate drivers. |
| Pin-selectable 640kHz/1.2MHz | Allows optimization of inductor size (3.3μH vs. 4.7μH) and output capacitance for height-critical applications like mobile displays. |
| Programmable soft-start | Prevents input voltage droop and output overshoot during startup; timing controlled by external capacitor (tMAX = 2.5×10⁵ × CSS). |
| Input voltage clamp circuit | Protects against production-line overvoltage spikes up to 10V using external RIN; clamps IN to 6.4V (typ) with 40mA max current. |
Applications
| AMLCD Panel Power Supply | TFT-LCD Gate Driver Bias |
|---|---|
Use Scenario: Powering active-matrix LCD panels requiring +9V, +27V, and –9V rails from a 3.3V input. IC Role / Device Role / Timing Role: Primary step-up regulator generating +9V main supply; enables cascaded charge pumps for secondary rails. Use Value: Achieves <1.1mm total solution height using 3.3μH inductor and ceramic capacitors, meeting ultra-thin display mechanical constraints. |
Use Scenario: Providing stable, low-noise gate-on (VGON) and gate-off (VGOFF) voltages for TFT pixel switching. IC Role / Device Role / Timing Role: High-efficiency boost stage feeding external charge-pump networks; regulated output minimizes display flicker and ghosting. Use Value: 90% efficiency at 250mA and fast load-transient response (<100μs recovery) ensure consistent pixel charging across frame rates. |
| Portable Medical Display | Industrial HMI Backlight Driver |
Use Scenario: Battery-powered diagnostic monitors needing reliable, low-EMI power for high-resolution screens. IC Role / Device Role / Timing Role: Main DC-DC converter with programmable soft-start and thermal shutdown for safe operation under variable load conditions. Use Value: 30μA shutdown current extends battery runtime; integrated clamp protects against ESD-induced input transients in field environments. |
Use Scenario: Driving LED backlights in rugged human-machine interface panels with wide temperature range requirements. IC Role / Device Role / Timing Role: Boost controller supplying constant-current LED driver ICs; operates from 2.6V–4.0V input across battery discharge curve. Use Value: 640kHz/1.2MHz selection allows trade-off between EMI filtering cost (lower freq) and component height (higher freq) in sealed enclosures. |
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 2.2MHz switching frequency; 13V max output; no integrated input clamp; 1.5A MOSFET. | Requires external overvoltage protection; better suited for compact consumer electronics than industrial display clamping needs. | Select when board height is <1.0mm and input overvoltage risk is low; verify external clamp design if replacing MAX17067EUA+ in legacy AMLCD systems. |
| LT3467EDD | Fixed 1.3MHz frequency; 16V max output; 1.1A MOSFET; no soft-start pin; different compensation architecture. | Lacks programmable soft-start and input clamp; requires redesign of loop compensation and startup sequencing. | Choose only for new designs where soft-start timing and input surge immunity are not critical; not drop-in for existing MAX17067EUA+ layouts. |
Compared with TPS61088RHLR and LT3467EDD, the MAX17067EUA+ uniquely combines pin-selectable frequency, integrated input clamp, and dedicated soft-start control - making it the only option among the three qualified for AMLCD power supplies requiring simultaneous height constraint, surge resilience, and controlled inrush.
Availability
MAX17067EUA+ is available at Aetrix Electronics and suitable for LCD display power supplies, portable medical monitors, and industrial HMI backlight drivers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX17067EUA+ 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, automotive, and communications markets.
The MAX17067EUA+ belongs to Maxim's low-noise, high-efficiency DC-DC converter product line, engineered specifically for flat-panel display power architectures demanding ultra-low profile, fast transient response, and robust input protection.
FAQ
What is the maximum output voltage supported by the MAX17067EUA+?
The MAX17067EUA+ supports an adjustable output voltage range from VIN up to +18V, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables. This capability enables direct generation of common LCD panel bias rails such as +9V, +12V, and +15V without cascaded stages. The device maintains regulation and efficiency across this full range when configured with appropriate external components per the datasheet guidelines.
Does the MAX17067EUA+ include built-in overvoltage protection on the input pin?
Yes, the MAX17067EUA+ integrates an input supply clamp circuit that limits the IN pin voltage to 6.4V (typical) during overvoltage events. This function requires an external series resistor (RIN) sized per the formula RIN ≥ (VIN – 6.05V)/0.04Ω. The clamp activates automatically without external control and is explicitly documented in the "IN Supply Clamp Circuit" section of the datasheet.
Can the MAX17067EUA+ operate with a 2.6V input supply?
Yes, the MAX17067EUA+ is fully specified to operate across an input voltage range of +2.6V to +4.0V, with undervoltage lockout (UVLO) releasing at 2.45V (typical) and hysteresis of ~80mV. This makes it compatible with deeply discharged single-cell Li+ batteries and low-voltage logic rails, and its performance at 2.6V is validated in the Electrical Characteristics table and Typical Operating Characteristics plots.
How is the switching frequency selected on the MAX17067EUA+?
The switching frequency of the MAX17067EUA+ is selected via the FREQ pin: connecting FREQ to GND configures 640kHz operation, while connecting FREQ to IN selects 1.2MHz. The pin has an internal 5μA pulldown, so leaving it unconnected defaults to 640kHz. Both frequencies are production-tested and guaranteed across the full –40°C to +85°C temperature range.
What package type is used for the MAX17067EUA+?
The MAX17067EUA+ uses the 8-pin μMAX package (package code U8+1), measuring 3.05mm × 3.05mm × 1.1mm. This ultra-compact, lead-free, RoHS-compliant surface-mount package is explicitly listed in the Ordering Information table and illustrated in the Package Outline drawing (document 21-0036). It is distinct from SOIC, TSSOP, or QFN variants.
MAX17067EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Not For New Designs
- 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+ FAQ
1.How can I place an order for MAX17067EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17067EUA+ 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+ reliable?
The price and inventory of MAX17067EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17067EUA+ is usually 5 days.
3.What payment methods are accepted for MAX17067EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17067EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17067EUA+?
MAX17067EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17067EUA+ 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+?
For technical support, including MAX17067EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17067EUA+ requirements.
6.How does Aetrix verify that MAX17067EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX17067EUA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX17067EUA+?
All MAX17067EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17067EUA+, 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+ part is unused and in its original packaging.
Return procedure for MAX17067EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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