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Analog Devices Inc./Maxim Integrated MAX17224ENT+T
- Part No.:
- MAX17224ENT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-XFBGA, WLBGA
- Datasheet:
-
MAX17224ENT+T.pdf
- Description:
- IC REG BOOST ADJ 1A 6WLP
- Quantity:
- Payment:
- Shipping:
Inventory:2,494
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Product details
Overview
The MAX17224ENT+T from Analog Devices is a nanoPower synchronous boost DC-DC converter with 1A peak inductor current limit, True Shutdown™, and single-resistor-selectable output voltage (1.8V–5V). It operates from 400mV input down to startup at 0.88V, delivers 300nA quiescent supply current into OUT, and targets ultra-low-power battery systems such as optical heart-rate monitors and wearable medical sensors.
For engineers reviewing the MAX17224ENT+T datasheet, MAX17224ENT+T pinout, MAX17224ENT+T application, or MAX17224ENT+T equivalent, key selection criteria include its 1A current limit, 2mm × 2mm μDFN package, enable transient protection (ETP), 0.5nA shutdown current, and resistor-based output voltage configuration without external feedback dividers.
Technical Context
The MAX17224ENT+T implements a fixed-on-time, current-limited PFM control scheme with automatic mode switching between ultra-low-power mode (ULPM), low-power mode (LPM), and high-power mode (HPM) based on load current. Its internal N-channel switch features 31mΩ RDS(ON) at VOUT = 3.3V, and the LX node supports up to 1.2A peak inductor current with 365ns typical maximum on-time.
True Shutdown disconnects OUT from IN with no forward or reverse current path, enabling 0.5nA total shutdown current (IN + LX). ETP allows regulated operation down to 400mV input after startup when EN is pulled via external resistor, at the cost of added IQ_ETP dependent on pullup resistance and efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Inductor Current Limit | 1A - enables use with smaller inductors for higher output current in compact designs |
| Quiescent Supply Current (OUT) | 300nA - minimizes battery drain during standby in always-on sensor nodes |
| Input Voltage Range | 400mV to 5.5V - supports direct operation from partially discharged primary cells (e.g., silver oxide, zinc air) |
| Output Voltage Range | 1.8V to 5V in 100mV steps - set by single 1% resistor (no divider network required) |
| Shutdown Current (IN + LX) | 0.5nA - ensures negligible leakage during system sleep, critical for multi-year battery life |
| Package | 2mm × 2mm, 6-pin μDFN - provides minimal PCB footprint while supporting thermal dissipation up to 357.8mW at +70°C |
| Enable Transient Protection | Yes - maintains regulation down to 400mV input post-startup, preventing brownout resets in pulsed-load applications |
Pinout & Package
MAX17224ENT+T is packaged in a 2mm × 2mm, 6-pin μDFN (package code L622+1C) with exposed pad for thermal performance. Pinout follows standard top-view orientation with pins numbered 1–6 counterclockwise from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Regulated output node; requires ≥10µF X5R ceramic capacitor to GND for stability |
| 2 | LX | Switching node; connects to inductor; clamped internally to GND and OUT |
| 3 | GND | Power ground reference; must be tied directly to PCB ground plane with short trace |
| 4 | SEL | Output voltage select input; accepts single 1% resistor to GND (open = 1.8V, short = 5.0V) |
| 5 | IN | Input power rail; requires ≥10µF X5R ceramic capacitor to GND near pin |
| 6 | EN | Active-high enable; open-drain compatible; supports ETP when pulled via resistor |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ | 0.5nA total shutdown current with full output-to-input isolation and reverse-current blocking across 0–5V VOUT |
| Single-Resistor Output Selection | Eliminates feedback divider network; reduces BOM count, board area, and quiescent current waste |
| Enable Transient Protection (ETP) | Maintains regulation during input voltage sag to 400mV post-startup-critical for pulse-driven OHRM LEDs |
| Ultra-Low-Power Mode (ULPM) | 11.5Hz minimum switching frequency at light loads; output biased +2.5% to absorb transients |
| PFM Control Architecture | Fixed 300ns on-time + current limiting enables >95% peak efficiency across 100nA–200mA load range |
Applications
| Optical Heart-Rate Monitoring (OHRM) LED Driver | Supercapacitor Backup for RTC/Alarm Buzzers |
|---|---|
Use Scenario: Powers green/red/IR LEDs in wearable pulse oximetry sensors using primary cells (AAA/AAAA) with rapidly decaying voltage. IC Role / Device Role / Timing Role: Boost regulator providing stable 3.3V or 5V to drive high-current LED pulses while operating down to 400mV input. Use Value: ETP prevents dropout during LED bursts; 300nA IQ extends battery life beyond 2 years in intermittent-sampling wearables. | Use Scenario: Maintains real-time clock or alarm buzzer operation during main power loss using supercapacitor energy storage. IC Role / Device Role / Timing Role: Regulated boost converter that sustains 3.3V or 5V output as supercap voltage drops from 5.5V to 400mV. Use Value: True Shutdown blocks reverse current from RTC into depleted supercap; 0.5nA shutdown current preserves stored charge for months. |
| Primary-Cell Portable Medical Sensors | Tiny Low-Power IoT Environmental Sensors |
Use Scenario: Powers temperature (MAX30205) or ECG front-end ICs in disposable patch monitors powered by silver-oxide or zinc-air cells. IC Role / Device Role / Timing Role: Primary voltage rail generator delivering 1.8–3.3V from 0.88V startup, supporting cold-chain or remote patient monitoring. Use Value: 0.88V startup and 400mV operating floor enable full utilization of cell capacity; μDFN package fits sub-100mm² PCBs. | Use Scenario: Supplies 3.0V to ultra-low-power microcontrollers (e.g., MAX32625) and BLE radios in coin-cell–powered environmental nodes. IC Role / Device Role / Timing Role: Efficient boost stage enabling continuous sensor sampling and periodic BLE advertising from 1.2–1.6V input. Use Value: 95% peak efficiency and ULPM extend CR2032 lifetime to >5 years; SEL resistor allows one BOM item across multiple voltage variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17222ENT+T | 500mA peak inductor current limit; identical package, pinout, and feature set except lower ILIM | Suitable for ≤150mA output loads; lower inductor stress and reduced solution size for medium-current apps | Select when output current demand is <200mA and smaller inductor footprint is preferred |
| TPS61291DRVR | 3.5μA typical quiescent current; no True Shutdown; 1.8V–5.5V output; 1.2A ILIM; 2mm × 2mm WSON | Lacks reverse-current blocking and sub-1nA shutdown; requires external feedback resistors | Choose if higher IQ is acceptable and True Shutdown is not required for system-level leakage control |
Compared with MAX17222ENT+T and TPS61291DRVR, the MAX17224ENT+T uniquely combines 1A current capability, 0.5nA shutdown, and resistor-based output setting-enabling highest output power in smallest footprint with lowest system-level leakage for decade-long battery deployments.
Availability
MAX17224ENT+T is available at Aetrix Electronics and suitable for optical heart-rate monitoring, supercapacitor backup systems, and primary-cell portable medical equipment requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX17224ENT+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 precision instrumentation, industrial, automotive, and healthcare markets.
The MAX17220–MAX17225 family was designed specifically for ultra-low-power battery-powered systems where nanocurrent operation, minimal solution size, and true output isolation are mandatory-targeting wearables, medical patches, and energy-harvesting edge nodes.
FAQ
What is the minimum input voltage required for MAX17224ENT+T to start up?
The MAX17224ENT+T starts up with a minimum input voltage of 0.88V (typical) under standard conditions (RL ≥ 3kΩ, TA = +25°C). Once started, it continues regulating down to 400mV input depending on load current-enabling full discharge of primary cells like silver oxide or zinc air. This startup threshold is verified per the Electrical Characteristics table and applies specifically to the MAX17224ENT+T variant within the MAX17220–MAX17225 family.
How does the MAX17224ENT+T achieve 0.5nA shutdown current?
The MAX17224ENT+T achieves 0.5nA total shutdown current (IN + LX) through True Shutdown™ architecture, which physically disconnects the output from the input using internal switches and blocks reverse current across the full 0–5V VOUT range. This value is measured with RL = 3kΩ, VEN = 0V, and TA = +25°C, and includes leakage from both IN and LX pins-confirmed in the Electrical Characteristics table under ISD_TOTAL.
Can the MAX17224ENT+T be used with a 5V output and 1.5V input?
Yes, the MAX17224ENT+T supports 5V output with 1.5V input: configure SEL with a short to GND (per RSEL Selection Table), and ensure inductor and capacitor ratings meet 5V output requirements. The device regulates across VIN = 1.5V to VOUT = 5V with >95% peak efficiency, and its 1A peak current limit handles typical 5V loads up to ~200mA. Operation is validated in the Typical Operating Characteristics section using 1.5V IN → 3V OUT; scaling to 5V is supported by the 1.8–5V output range specification.
What package type does MAX17224ENT+T use, and is it RoHS-compliant?
The MAX17224ENT+T uses a 2mm × 2mm, 6-pin μDFN package (package code L622+1C, outline number 21-0164) with exposed thermal pad. The "+" suffix in the package code indicates RoHS compliance. This package is qualified per JEDEC standards, supports four-layer board thermal design (θJA = 223.6°C/W), and is listed in Analog Devices' official package documentation as lead-free and halogen-free.
Does MAX17224ENT+T require external feedback resistors to set output voltage?
No, the MAX17224ENT+T does not require external feedback resistors. It uses the proprietary RSEL (resistor-select) method: a single 1% resistor from SEL to GND sets the output voltage from 1.8V (open) to 5.0V (short), per the RSEL Selection Table. This eliminates divider current waste and reduces PCB area-confirmed in the Functional Diagram, Pin Description, and Applications Information sections of the datasheet.
MAX17224ENT+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):
- 0.4V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 1A (Switch)
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLP (1.42x0.89)
MAX17224ENT+T FAQ
1.How can I place an order for MAX17224ENT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17224ENT+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 MAX17224ENT+T reliable?
The price and inventory of MAX17224ENT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17224ENT+T is usually 5 days.
3.What payment methods are accepted for MAX17224ENT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17224ENT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17224ENT+T?
MAX17224ENT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17224ENT+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 MAX17224ENT+T?
For technical support, including MAX17224ENT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17224ENT+T requirements.
6.How does Aetrix verify that MAX17224ENT+T is sourced from the original manufacturer or authorized distributors?
All MAX17224ENT+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 MAX17224ENT+T meets industry standards.
7.What is the process for return or replacement of MAX17224ENT+T?
All MAX17224ENT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17224ENT+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 MAX17224ENT+T part is unused and in its original packaging.
Return procedure for MAX17224ENT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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