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Analog Devices Inc./Maxim Integrated MAX17223ALT+T
- Part No.:
- MAX17223ALT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN
- Datasheet:
-
MAX17223ALT+T.pdf
- Description:
- IC REG BOOST ADJ 500MA 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,010
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Product details
Overview
The MAX17223ALT+T from Analog Devices is a nanoPower synchronous boost DC-DC converter optimized for ultra-low-quiescent-current battery-powered systems, featuring 500mA peak inductor current limit, True Shutdown™ (0.5nA shutdown current), 400mV minimum operating input voltage, and single-resistor-selectable output (1.8V–5V). It enables long-life operation in optical heart-rate monitoring LED drivers and supercapacitor-backed RTCs.
For engineers reviewing the MAX17223ALT+T datasheet, MAX17223ALT+T pinout, MAX17223ALT+T application, or MAX17223ALT+T equivalent, key selection considerations include its 300nA quiescent supply current into OUT, 0.88V minimum startup voltage, 2mm × 2mm μDFN-6 package, and enable transient protection (ETP) for stable regulation down to 400mV input under load.
Technical Context
The MAX17223ALT+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 300ns maximum switch on-time and 500mA N-channel MOSFET peak current limit (RDS(ON) = 62mΩ typical at VOUT = 3.3V) support efficient light-load operation while enabling up to ~205mA continuous output with 2.2µH inductors.
True Shutdown disconnects OUT from IN with no forward or reverse current path across the full 0V–5V output range, and the RSEL pin reads a single 1% resistor during a 600µs detection window to set output voltage without continuous feedback divider current. ETP functionality-enabled only in MAX17220/22/24 variants-is not present in MAX17223ALT+T, confirming it operates without enable-input transient protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Supply Current into OUT | 300nA typical - enables multi-year battery life in always-on IoT sensors |
| Shutdown Current | 0.5nA typical - eliminates leakage paths during system sleep |
| Input Voltage Range | 400mV to 5.5V - supports direct operation from partially discharged primary cells |
| Output Voltage Range | 1.8V to 5.0V in 100mV steps - set by single 1% resistor, no feedback divider current loss |
| Peak Inductor Current Limit | 500mA - defines maximum energy transfer per cycle; matches 2.2µH inductor sizing |
| Minimum Startup Voltage | 0.88V typical - allows cold-start from weak alkaline or silver-oxide cells |
| Package | 2mm × 2mm, 6-pin μDFN - enables compact PCB layout with minimal thermal resistance (θJA = 223.6°C/W) |
Pinout & Package
MAX17223ALT+T is housed in a 2mm × 2mm, 6-pin µDFN package (package code L622+1C, outline 21-0164) with wettable flank leads for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input power supply | Accepts 400mV–5.5V; requires ≥10µF X5R ceramic bypass capacitor to ground |
| 2 (OUT) | Regulated output | Delivers 1.8V–5V; connects to ≥10µF output capacitor and load |
| 3 (GND) | Power ground reference | Low-impedance return path; must be short-traced to both input and output capacitors |
| 4 (SEL) | Output voltage select | Reads single 1% resistor to GND during startup; CRSEL < 2pF required for valid detection |
| 5 (LX) | Switching node | Connects inductor between IN and LX; carries pulsed current up to 500mA peak |
| 6 (EN) | Active-high enable | Drives internal bias circuits; open-drain or push-pull GPIO compatible; no ETP function |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ | 0.5nA total shutdown current with complete input-output isolation and zero reverse current over 0–5V VOUT |
| NanoPower Operation | 300nA quiescent current into OUT enables >10-year shelf life in coin-cell-powered devices |
| Synchronous Rectification | Integrated P- and N-channel MOSFETs eliminate external diode losses; achieves 95% peak efficiency |
| RSEL Output Programming | Single 1% resistor replaces traditional feedback divider, saving board space and eliminating static current waste |
| Ultra-Low-Voltage Startup | 0.88V typical startup threshold allows reliable operation from aging primary cells (e.g., AAA, AA, silver oxide) |
Applications
| Optical Heart-Rate Monitoring (OHRM) LED Drivers | Supercapacitor Backup for RTC/Alarm Buzzers |
|---|---|
Use Scenario: Primary-cell wearable sensor powering pulsed green/red LEDs for photoplethysmography (PPG). IC Role / Device Role / Timing Role: Boost converter supplying regulated 3.3V to OHRM LEDs and microcontroller peripherals from 0.8–1.6V silver-oxide cell. Use Value: 400mV operational floor and 300nA quiescent current extend battery life beyond 2 years while maintaining LED intensity stability. |
Use Scenario: Maintaining real-time clock and alarm buzzer operation during main power failure using supercapacitor energy storage. IC Role / Device Role / Timing Role: Regulating constant 3.3V or 5V output from decaying supercapacitor (400mV–5.5V) to preserve timekeeping and audible alert integrity. Use Value: True Shutdown prevents supercapacitor self-discharge; 0.5nA shutdown current extends backup runtime by >30% versus conventional boosters. |
| Primary-Cell Portable Systems | Tiny, Low-Power IoT Sensors |
Use Scenario: Battery-powered environmental sensor (temperature/humidity) using alkaline AAA cells in remote deployments. IC Role / Device Role / Timing Role: Providing stable 3.0V supply to ultra-low-power MCU and BLE radio during intermittent 10-second wake cycles. Use Value: 0.88V startup and 500mA peak current support rapid sensor readouts without brownout, even at end-of-life cell voltage. |
Use Scenario: Sub-gram industrial condition monitor powered by zinc-air or lithium-thionyl-chloride primary cells. IC Role / Device Role / Timing Role: Delivering 2.5V to MEMS accelerometer and LoRa transceiver during 1-minute hourly transmissions. Use Value: 300nA quiescent current reduces average system current to <1µA, enabling 15+ year deployment without battery replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17222ALT+T | Identical 500mA ILIM, same μDFN-6 package, but lacks ETP - matches MAX17223ALT+T's functional scope | No enable transient protection; suitable where EN is driven by push-pull GPIO or open-drain with external pullup | Select MAX17222ALT+T when identical performance with verified production availability is prioritized over minor date-code variance |
| TPS61291DRVR | 350nA IQ, 400mV–5.5V input, 1.8V–5.5V output, but 300mA ILIM and no True Shutdown (reverse current possible) | Lacks input-output isolation in shutdown; requires external reverse-blocking FET for supercapacitor backup | Choose TPS61291DRVR only if lower cost outweighs need for true zero-leakage shutdown and higher peak current capability |
Compared with MAX17222ALT+T, the MAX17223ALT+T offers identical electrical specs and pinout but may differ in wafer lot or test screening; versus TPS61291DRVR, MAX17223ALT+T delivers superior shutdown integrity and 67% higher peak current for demanding pulsed loads.
Availability
MAX17223ALT+T is available at Aetrix Electronics and suitable for optical heart-rate monitoring wearables, supercapacitor-backed RTC modules, and primary-cell IoT sensors requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MAX17223ALT+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 (acquired Maxim Integrated in 2021) designs precision analog, mixed-signal, and power management ICs for high-reliability industrial, medical, and automotive applications.
The MAX17220–MAX17225 family was engineered specifically for ultra-low-power battery longevity in primary-cell and energy-harvesting systems, emphasizing sub-1µA system-level quiescent budgets and minimal solution footprint.
FAQ
What is the minimum input voltage required for the MAX17223ALT+T to start up?
The MAX17223ALT+T has a typical minimum startup input voltage of 0.88V at +25°C with a 3kΩ load, enabling reliable cold-start from nearly depleted primary cells such as silver oxide or alkaline AAA batteries. This value is guaranteed to be ≤0.95V across the full -40°C to +125°C operating temperature range.
Does the MAX17223ALT+T support True Shutdown™, and what does that mean for system design?
Yes, the MAX17223ALT+T supports True Shutdown™, which fully disconnects the output from the input with no forward or reverse current path. Its total shutdown current is 0.5nA typical, and it blocks reverse current across the entire 0V–5V output voltage range - critical for preventing supercapacitor self-discharge or battery drain in always-off states.
How is the output voltage set on the MAX17223ALT+T, and what resistor tolerance is required?
The MAX17223ALT+T uses a single resistor (RSEL) connected from the SEL pin to GND to set output voltage in 100mV steps from 1.8V to 5.0V. The datasheet specifies ±1% resistor accuracy is required; standard E96 1% thin-film resistors (e.g., 133kΩ for 3.0V) are recommended, and parasitic capacitance on the SEL trace must remain below 2pF.
What is the peak inductor current limit of the MAX17223ALT+T, and how does it affect inductor selection?
The MAX17223ALT+T has a guaranteed 500mA peak inductor current limit (0.4A min, 0.575A max). This defines the maximum energy per switching cycle and directly determines minimum inductance: for example, with VIN = 1.8V, VOUT = 3V, and desired IOUT = 205mA, a 3.3µH inductor is recommended - larger than the default 2.2µH used in reference designs.
Is Enable Transient Protection (ETP) available on the MAX17223ALT+T?
No, Enable Transient Protection (ETP) is exclusive to the MAX17220, MAX17222, and MAX17224 variants. The MAX17223ALT+T does not include ETP circuitry, meaning it cannot maintain regulation when input voltage drops below ~0.95V post-startup - consistent with its specification as a non-ETP member of the family.
MAX17223ALT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN
- 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:
- 500mA (Switch)
- Frequency - Switching:
- 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-µDFN (2x2)
MAX17223ALT+T FAQ
1.How can I place an order for MAX17223ALT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17223ALT+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 MAX17223ALT+T reliable?
The price and inventory of MAX17223ALT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17223ALT+T is usually 5 days.
3.What payment methods are accepted for MAX17223ALT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17223ALT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17223ALT+T?
MAX17223ALT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17223ALT+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 MAX17223ALT+T?
For technical support, including MAX17223ALT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17223ALT+T requirements.
6.How does Aetrix verify that MAX17223ALT+T is sourced from the original manufacturer or authorized distributors?
All MAX17223ALT+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 MAX17223ALT+T meets industry standards.
7.What is the process for return or replacement of MAX17223ALT+T?
All MAX17223ALT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17223ALT+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 MAX17223ALT+T part is unused and in its original packaging.
Return procedure for MAX17223ALT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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