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Analog Devices Inc./Maxim Integrated MAX17291ATA+T
- Part No.:
- MAX17291ATA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX17291ATA+T.pdf
- Description:
- IC REG BOOST ADJ 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,638
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Product details
Overview
The MAX17291ATA+T from Analog Devices is a micropower, high-voltage boost DC-DC converter with 1A peak inductor current limit, True Shutdown™, and 1.0MHz fixed-frequency operation in CCM. It accepts 1.8V–5.5V input and delivers regulated 5.5V–20V output, features 28μA quiescent current, and integrates power switch, diode, and load switch - enabling compact sensor power supply designs.
For engineers reviewing the MAX17291ATA+T datasheet, MAX17291ATA+T pinout, MAX17291ATA+T application, or MAX17291ATA+T equivalent, this page provides verified technical context, package-specific pin mapping, real-world use cases for wearable and medical sensors, and validated alternative options with documented functional trade-offs.
Technical Context
The MAX17291ATA+T implements current-mode control with adaptive constant off-time and operates in two modes: light-load PFM (for >91% efficiency at μA loads) and heavy-load PWM (quasi-constant 1.0MHz switching). Its internal error amplifier regulates output by comparing FB voltage to 1.25V reference, dynamically adjusting peak inductor current up to 1.0A.
True Shutdown™ disconnects OUT from IN via integrated load switch, achieving ≤50nA shutdown current and zero reverse current. Protection includes output short-circuit response (2μs forced off-time, 1A current clamp), thermal shutdown at +165°C (15°C hysteresis), and UVLO with 1.7V rising threshold and 100mV hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8V to 5.5V - supports single-cell Li-ion, alkaline, or coin-cell sources without external LDO pre-regulation. |
| Output Voltage Range | 5.5V to 20V - programmable via external resistor divider; enables direct powering of HV sensors, op-amps, or RF modules. |
| Peak Inductor Current Limit | 1.0A - sets maximum energy transfer per cycle; determines minimum inductance and saturation rating for stable 50mA–100mA output. |
| Quiescent Supply Current | 28μA - enables multi-year battery life in always-on sensor nodes operating at <100μA average load. |
| Switching Frequency | 1.0MHz - allows use of small 4.7μH–15μH inductors and ceramic capacitors, minimizing solution footprint. |
| Shutdown Current | ≤50nA - ensures negligible battery drain during system sleep; critical for wearables with long idle periods. |
| Operating Temperature | -40°C to +125°C - qualified for industrial-grade sensor modules deployed in harsh environments. |
Pinout & Package
The MAX17291ATA+T is packaged in a 1.27mm × 0.87mm, 6-bump WLP (3 × 2 array, 0.4mm pitch) with bottom-side solder bumps. This ultra-compact package targets space-constrained PCB layouts in wearable and implantable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Switching Node | Connects inductor between IN and LX; carries high di/dt pulsed current - requires short, low-inductance trace routing. |
| IN | Input Power Supply | Accepts 1.8V–5.5V; bypassed with 22μF ceramic capacitor to GND - critical for stability and EMI suppression. |
| EN | Active-High Enable | Logic-level control (VIH ≥ 1.2V); pulls low to enter True Shutdown™ with ≤50nA input leakage. |
| FB | Feedback Input | Senses output voltage via resistor divider; internal 1.25V reference enables precise VOUT programming (±1.5% accuracy). |
| OUT | Regulated Output | Delivers 5.5V–20V; requires 10μF–22μF ceramic output capacitor - defines transient response and ripple performance. |
| GND | Power Ground | Reference for all internal circuits; must be connected to solid ground plane with low-impedance path to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ | Zero forward/reverse current between IN and OUT; eliminates standby leakage - essential for battery-powered systems requiring deep sleep. |
| Integrated Power Diode | Eliminates external Schottky diode; reduces BOM count and PCB area while maintaining >91% peak efficiency across load range. |
| Short-Circuit Protection | Automatic 1A current limiting and 2μs forced off-time during output short; prevents thermal runaway without latch-off. |
| Soft-Start | 2.2ms built-in ramp time limits inrush current - avoids input rail collapse during cold start in low-capacity battery systems. |
| Thermal Shutdown | +165°C trip point with 15°C hysteresis - protects silicon integrity during sustained overload or poor heatsinking conditions. |
Applications
| Gas Sensor Module Power | Smartwatch Heart Rate Monitor |
|---|---|
Use Scenario: Powering electrochemical gas sensors requiring 12V bias voltage from a 3.0V coin cell. IC Role / Device Role / Timing Role: Boost converter generating stable 12V output with <50mV ripple; manages startup sequencing and load transients during sensor activation. Use Value: 28μA quiescent current extends 200mAh coin cell life to >3 years in intermittent-read mode; True Shutdown™ eliminates standby drain during 99% idle time. |
Use Scenario: Supplying 15V to optical heart rate ICs during LED pulse bursts in ultra-thin smartwatches. IC Role / Device Role / Timing Role: High-efficiency step-up regulator delivering 50mA peak current with fast transient response; synchronized to LED driver timing. Use Value: 1.0MHz switching enables use of 6.8μH inductor and 10μF ceramic caps - fits within 2.5mm × 2.5mm board area; 91% peak efficiency minimizes thermal rise under skin. |
| Portable ECG Patch | Industrial Wireless Node |
Use Scenario: Generating 18V for analog front-end amplifiers in disposable single-use ECG patches powered by CR2032. IC Role / Device Role / Timing Role: Micropower boost converter with programmable output; enters True Shutdown™ between 30-second measurement intervals. Use Value: ≤50nA shutdown current ensures <0.1% annual battery loss; 1.27mm × 0.87mm WLP package enables integration into 12mm-diameter flexible PCB. |
Use Scenario: Providing 20V to LoRaWAN transceiver PA stages in battery-operated environmental monitors deployed outdoors. IC Role / Device Role / Timing Role: Robust high-voltage boost stage operating across -40°C to +125°C ambient; handles wide input variation from aging primary cells. Use Value: -40°C to +125°C rating ensures reliability in uncontrolled enclosures; overtemperature lockout prevents failure during summer solar heating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS610995YFFR | Lower max output (5.5V vs 20V); 2.5μA IQ; no integrated load switch or True Shutdown™ | Not suitable for >5.5V sensor bias; requires external isolation FET for true shutdown | Select when only 3.3V/5V output needed and ultra-low IQ (<3μA) is critical |
| LT3990EMSE#TRPBF | Higher IQ (40μA); 40V max output; external MOSFET required; no integrated diode | Supports wider VIN/VOUT ranges but increases BOM and layout complexity | Select when >20V output or higher output current (>150mA) is required |
Compared with TPS610995YFFR and LT3990EMSE#TRPBF, the MAX17291ATA+T uniquely combines 20V output capability, True Shutdown™, integrated diode, and sub-30μA quiescent current in a 1.27mm × 0.87mm WLP - making it optimal for miniaturized, high-voltage, battery-sensitive sensor power rails.
Availability
The MAX17291ATA+T is available at Aetrix Electronics and suitable for sensor power supply, wearable device subsystems, and portable medical equipment requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MAX17291ATA+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX17291 belongs to Analog Devices' micropower DC-DC converter product line, engineered specifically for ultra-low-power, high-voltage sensor and wearable applications where solution size and battery longevity are paramount.
FAQ
What is the maximum output voltage supported by the MAX17291ATA+T?
The MAX17291ATA+T supports an output voltage range of 5.5V to 20V, set by an external resistor divider on the FB pin. The internal feedback reference is 1.25V (±1.5%), and the device maintains regulation across its full temperature range (-40°C to +125°C) and load conditions. Output voltages above 20V are not supported and may damage the IC.
Does the MAX17291ATA+T include an integrated power diode?
Yes, the MAX17291ATA+T integrates a power diode, eliminating the need for an external Schottky diode. This reduces bill-of-materials count, PCB area, and parasitic losses - contributing directly to its 91% peak efficiency and compact total solution size. The diode is rated for continuous conduction at the 1A peak inductor current limit.
How does True Shutdown™ function in the MAX17291ATA+T?
True Shutdown™ in the MAX17291ATA+T uses an integrated load switch to physically disconnect the OUT pin from the IN pin when EN is low. This achieves ≤50nA shutdown current and blocks both forward and reverse current flow - unlike standard enable/disable modes that leave parasitic paths active. No external components are required to realize this behavior.
What package type is used for the MAX17291ATA+T?
The MAX17291ATA+T uses a 1.27mm × 0.87mm, 6-bump Wafer-Level Package (WLP) with 3 × 2 bump arrangement and 0.4mm pitch. This ultra-miniature package is optimized for space-constrained applications such as hearing aids, ingestible sensors, and compact wearables. Land pattern design must follow Analog Devices Application Note 1891.
Can the MAX17291ATA+T drive a 100mA load at 15V output from a 3.3V input?
Yes, the MAX17291ATA+T can deliver 100mA at 15V output from 3.3V input, provided the inductor and capacitors are selected per Analog Devices' design guidelines. At this condition, typical efficiency is ~85%, resulting in ~530mW power dissipation. Thermal performance must be verified using θJA = 95.15°C/W (WLP package) and ambient temperature constraints.
MAX17291ATA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5.5V
- Voltage - Output (Max):
- 20V
- Current - Output:
- -
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
MAX17291ATA+T FAQ
1.How can I place an order for MAX17291ATA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17291ATA+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 MAX17291ATA+T reliable?
The price and inventory of MAX17291ATA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17291ATA+T is usually 5 days.
3.What payment methods are accepted for MAX17291ATA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17291ATA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17291ATA+T?
MAX17291ATA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17291ATA+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 MAX17291ATA+T?
For technical support, including MAX17291ATA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17291ATA+T requirements.
6.How does Aetrix verify that MAX17291ATA+T is sourced from the original manufacturer or authorized distributors?
All MAX17291ATA+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 MAX17291ATA+T meets industry standards.
7.What is the process for return or replacement of MAX17291ATA+T?
All MAX17291ATA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17291ATA+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 MAX17291ATA+T part is unused and in its original packaging.
Return procedure for MAX17291ATA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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