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Analog Devices Inc./Maxim Integrated MAX17291ANT+T
- Part No.:
- MAX17291ANT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-XFBGA, WLBGA
- Datasheet:
-
MAX17291ANT+T.pdf
- Description:
- IC REG BOOST ADJ 1A 6WLP
- Quantity:
- Payment:
- Shipping:
Inventory:6,885
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Product details
Overview
The MAX17291ANT+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, featuring 28μA quiescent current and 91% peak efficiency. It integrates power switch, power diode, and output load switch-designed for space-constrained sensor modules requiring stable high-voltage rail generation.
For engineers reviewing the MAX17291ANT+T datasheet, MAX17291ANT+T pinout, MAX17291ANT+T application, or MAX17291ANT+T equivalent, key selection criteria include its 0.05μA shutdown current, 2.2ms soft-start, short-circuit protection, -40°C to +125°C operating range, and dual-package availability (6-bump WLP or 8-pin TDFN).
Technical Context
The MAX17291ANT+T employs current-mode control with adaptive constant off-time architecture, enabling quasi-constant 1.0MHz switching in CCM and PFM-based light-load efficiency mode. Its integrated nMOS/pMOS switch pair and on-chip power diode eliminate external high-side components.
True Shutdown™ fully isolates IN from OUT via internal load switch, achieving ≤50nA input shutdown current and zero reverse current. Protection includes output short-circuit response (1A current limit + 2μs forced off-time) and thermal shutdown at +165°C with 15°C 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 pre-regulation. |
| Output Voltage Range | 5.5V to 20V - programmable via external resistor divider; enables direct powering of HV sensors, op-amps, or RF front-ends. |
| Peak Inductor Current Limit | 1.0A - sets maximum energy transfer per cycle; determines minimum inductor size and short-circuit current capability. |
| Quiescent Supply Current | 28μA - enables multi-year battery life in always-on sensor nodes with intermittent wake-up. |
| Shutdown Current | 0.05μA - ensures negligible battery drain during system sleep; critical for wearable and medical patch designs. |
| Switching Frequency | 1.0MHz - allows use of small, low-profile inductors (4.7–15μH) and ceramic capacitors, minimizing PCB area. |
| Operating Temperature | -40°C to +125°C - qualified for automotive cabin, industrial IoT, and medical equipment environments. |
Pinout & Package
The MAX17291ANT+T is packaged in a 1.27mm × 0.87mm, 6-bump WLP (3 × 2 array, 0.4mm pitch), optimized for ultra-compact sensor modules. The package exposes no thermal pad; all thermal dissipation occurs through solder joints and PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Switching node | Connects inductor between IN and LX; carries high di/dt ripple current; requires tight layout to minimize EMI and voltage spikes. |
| IN | Input power supply | Accepts 1.8V–5.5V; must be bypassed with ≥22μF ceramic capacitor near pin to suppress input ripple and support peak current demands. |
| EN | Active-high enable | Pull ≥1.2V to enable; pull ≤0.8V to enter True Shutdown; logic-compatible with MCU GPIOs without level-shifting. |
| FB | Feedback input | Senses divided output voltage; internal 1.25V reference enables precise output programming (e.g., R1=3.48MΩ, R2=402kΩ for 12V). |
| OUT | Regulated output | Delivers up to 20V; requires 10–22μF ceramic output capacitor to maintain stability and limit ripple under load transients. |
| GND | Power ground | Reference for LX, IN, and OUT; must be connected to low-impedance PCB ground plane to ensure accurate regulation and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ | 0.05μA shutdown current with complete IN–OUT isolation-eliminates standby leakage in battery-powered systems. |
| Integrated Power Diode | Eliminates need for external Schottky diode-reduces BOM count, footprint, and forward voltage drop losses. |
| Output Short-Circuit Protection | 1A current limiting + 2μs forced off-time prevents thermal runaway during accidental shorts or faulty downstream loads. |
| 2.2ms Soft-Start | Controls VOUT ramp rate at 6V/ms-prevents inrush current that could brown-out weak input sources like coin cells. |
| Light Load Efficiency Mode | PFM operation below ~10mA load-maintains >85% efficiency down to μA-level output currents. |
Applications
| Industrial Sensor Node | Wearable Health Monitor |
|---|---|
Use Scenario: A wireless temperature/humidity sensor node powered by a CR2032 coin cell operates intermittently, waking every 30 seconds to acquire and transmit data. IC Role / Device Role / Timing Role: Boost converter generating stable 12V rail for analog front-end and RF transceiver from 2.2V–3.0V battery voltage. Use Value: 28μA quiescent current extends battery life beyond 3 years; True Shutdown cuts leakage to 0.05μA during 99.9% sleep time. | Use Scenario: A wrist-worn ECG patch uses dry electrodes and low-power ADC, requiring clean 15V bias for signal conditioning amplifiers. IC Role / Device Role / Timing Role: High-efficiency step-up regulator delivering regulated 15V from a 3.6V LiPo cell, synchronized to measurement bursts. Use Value: 1.0MHz switching enables <1mm² solution size; 91% peak efficiency minimizes heat buildup against skin. |
| Portable Medical Instrument | Automotive Cabin Sensor |
Use Scenario: A handheld pulse oximeter uses a red/IR LED array requiring 18V drive voltage, powered by two AAA batteries (2.4V–3.2V). IC Role / Device Role / Timing Role: Micropower boost converter supplying 18V to LED driver IC, activated only during measurement cycles. Use Value: 2.2ms soft-start prevents LED current overshoot; -40°C to +125°C rating ensures reliable operation across clinical environments. | Use Scenario: An ambient air quality sensor mounted behind a vehicle dashboard must operate continuously across engine-off (cold soak) and engine-on (hot soak) conditions. IC Role / Device Role / Timing Role: High-voltage boost stage powering gas detection electrochemical cells requiring 10V bias from 3.3V system rail. Use Value: Thermal shutdown at +165°C prevents latch-up in confined spaces; 1A current limit handles transient sensor startup surges. |
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 (18V vs. 20V); 30μA IQ; no integrated load switch; no True Shutdown | Lacks output isolation in shutdown-unsuitable where zero leakage is mandatory | Select only if 18V output suffices and leakage tolerance >100nA |
| LT3467EDD#TRPBF | Higher IQ (60μA); 1.2MHz fSW; no short-circuit protection; requires external diode | Needs external Schottky diode and lacks fault recovery-increases design complexity and failure risk | Prefer only when higher switching frequency justifies added BOM and layout effort |
Compared with TPS610995YFFR and LT3467EDD#TRPBF, the MAX17291ANT+T uniquely combines 20V output capability, 0.05μA shutdown current, integrated diode, and robust short-circuit protection-making it optimal for ultra-low-power, safety-critical sensor applications where reliability and leakage are non-negotiable.
Availability
MAX17291ANT+T is available at Aetrix Electronics and suitable for sensor power supply, wearable devices, and portable medical equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX17291ANT+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, Inc. 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-quiescent-current, high-voltage boost applications in battery-constrained sensor and wearable systems.
FAQ
What is the maximum output voltage supported by the MAX17291ANT+T?
The MAX17291ANT+T supports an output voltage range of 5.5V to 20V, set via an external resistor divider connected to the FB pin. The internal feedback reference is 1.25V (typ), and the device maintains regulation accuracy within ±1.5% over temperature and load. Output voltages above 18V require careful attention to LX voltage stress and PCB layout to avoid breakdown.
Does the MAX17291ANT+T include short-circuit protection, and how does it behave during a fault?
Yes, the MAX17291ANT+T features active short-circuit protection. When the output is shorted to ground, the device limits peak inductor current to 1.0A and enforces a 2μs minimum off-time to prevent thermal runaway. After fault removal, it automatically recovers using soft-start ramping-first maintaining constant input current until VOUT exceeds VIN, then ramping to target voltage at 6V/ms.
Can the MAX17291ANT+T operate from a 2.0V input and deliver 12V at 50mA?
Yes-the MAX17291ANT+T is validated for this exact condition. The typical application circuit in the datasheet (Figure 2) specifies 2.0V–5.0V input, 12V output, and 50mA load. At 2.0V input and 12V/50mA output, efficiency remains >82%, and the 1A current limit provides ample margin for startup and transient surges.
What is the purpose of the AGND pin in the TDFN package, and how should it be connected?
In the TDFN package, the AGND pin (Pin 2) is the analog ground reference for internal error amplifier and feedback circuitry. It must be connected externally to the exposed pad (EP), which is functionally tied to AGND. Both AGND and GND pins should connect to the EP at a single point on the PCB to minimize ground bounce and ensure accurate regulation-separate routing to main GND is not permitted.
Is the MAX17291ANT+T pin-compatible with other variants in the MAX1729x family?
No-the MAX17291ANT+T uses the 6-bump WLP package (N60N1+1), while other variants like MAX17291ATC+T use the 8-pin TDFN (T822+3C). Pin counts, layouts, and terminal assignments differ significantly: WLP has 6 terminals (LX, IN, EN, FB, OUT, GND), whereas TDFN adds POK and AGND. Direct substitution requires PCB redesign.
MAX17291ANT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-XFBGA, WLBGA
- 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:
- 1A
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLP (1.27x0.87)
MAX17291ANT+T FAQ
1.How can I place an order for MAX17291ANT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17291ANT+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 MAX17291ANT+T reliable?
The price and inventory of MAX17291ANT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17291ANT+T is usually 5 days.
3.What payment methods are accepted for MAX17291ANT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17291ANT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17291ANT+T?
MAX17291ANT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17291ANT+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 MAX17291ANT+T?
For technical support, including MAX17291ANT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17291ANT+T requirements.
6.How does Aetrix verify that MAX17291ANT+T is sourced from the original manufacturer or authorized distributors?
All MAX17291ANT+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 MAX17291ANT+T meets industry standards.
7.What is the process for return or replacement of MAX17291ANT+T?
All MAX17291ANT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17291ANT+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 MAX17291ANT+T part is unused and in its original packaging.
Return procedure for MAX17291ANT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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