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Analog Devices Inc./Maxim Integrated MAX17223ENT+T
- Part No.:
- MAX17223ENT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-XFBGA, WLBGA
- Datasheet:
-
MAX17223ENT+T.pdf
- Description:
- IC REG BOOST ADJ 500MA 6WLP
- Quantity:
- Payment:
- Shipping:
Inventory:2,712
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Product details
Overview
The MAX17223ENT+T from Analog Devices is a nanoPower synchronous boost DC-DC converter with 500mA peak inductor current limit, True Shutdown™ (0.5nA shutdown current), and single-resistor-selectable output voltage (1.8V–5V). It operates from 400mV input down to startup at 0.88V, delivers up to 95% peak efficiency, and targets ultra-low-power battery systems such as optical heart-rate monitors and wearable medical sensors.
For engineers reviewing the MAX17223ENT+T datasheet, MAX17223ENT+T pinout, MAX17223ENT+T application, or MAX17223ENT+T equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters across temperature, real-world application constraints for primary/secondary cells, and two rigorously cross-checked alternative parts with documented functional and packaging differences.
Technical Context
The MAX17223ENT+T implements a fixed-on-time, current-limited PFM control scheme with three dynamic operating modes-ultra-low-power mode (ULPM), low-power mode (LPM), and high-power mode (HPM)-automatically selected based on load current. Its 300ns minimum on-time and 70–75% maximum duty cycle enable stable regulation at sub-1V inputs.
True Shutdown™ disconnects OUT from IN using internal MOSFETs, eliminating reverse current flow even when VOUT = 0V–5V and ensuring zero forward leakage. The device supports enable transient protection (ETP) for sustained operation during input dips to 400mV post-startup, at the cost of slightly elevated quiescent current dependent on external pullup resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Supply Current (OUT) | 300nA typical - enables multi-year battery life in always-on sensor nodes |
| Shutdown Current | 0.5nA typical - preserves energy during deep sleep without external switches |
| 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 5.0V in 100mV steps - set by single ±1% resistor, no feedback divider current loss |
| Peak Inductor Current Limit | 500mA - matches 2.2µH inductors for optimal size/efficiency tradeoff in wearables |
| Startup Input Voltage | 0.88V typical - boots from supercapacitor or weak primary cell after storage |
| Package | 2mm × 2mm, 6-pin µDFN - compact footprint compatible with high-density wearable PCBs |
Pinout & Package
The MAX17223ENT+T is supplied in a 2mm × 2mm, 6-pin µDFN package (package code L622+1C, outline 21-0164) with wettable flank leads for automated optical inspection. Thermal resistance θJA = 223.6°C/W on a four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 400mV–5.5V; requires ≥10µF X5R ceramic capacitor to ground for stability and EMI reduction |
| 2 (OUT) | Regulated output node | Delivers 1.8V–5V; must connect ≥10µF X5R ceramic capacitor directly to GND with minimal trace length |
| 3 (GND) | Power and signal reference | Primary return path; must be tied to power plane with shortest possible connection to CIN and COUT grounds |
| 4 (SEL) | Output voltage selection input | Reads single ±1% resistor to GND during 600µs startup window; CRSEL < 2pF required for accuracy |
| 5 (LX) | Switching node | Connects inductor between IN and LX; high di/dt node requiring minimized loop area and copper fill |
| 6 (EN) | Active-high enable control | Pull high to enable; open-drain or push-pull GPIO compatible; enables ETP only on MAX17222/MAX17223/MAX17224 variants |
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 continuous divider current loss and reduces BOM count - one part supports 33 output voltages via standard 1% resistors |
| Enable Transient Protection (ETP) | Maintains regulation during input voltage sags to 400mV post-startup - critical for primary-cell systems under pulsed loads |
| PFM control with 3 operating modes | ULPM (11.5Hz min frequency), LPM, and HPM automatically adapt to load - ensures >85% efficiency from 10µA to 200mA output |
| Sub-1V startup capability | 0.88V typical startup voltage enables use with supercapacitors and aged primary batteries without precharge circuitry |
Applications
| Optical Heart-Rate Monitoring (OHRM) LED Drivers | Supercapacitor Backup for RTC/Alarm Buzzers |
|---|---|
Use Scenario: Primary-cell wearable with MAX30102 optical sensor requiring regulated 3.3V LED supply during brief 100ms pulses. IC Role / Device Role / Timing Role: Boost converter providing stable 3.3V from 0.9–1.6V silver-oxide cell; handles 200mA pulsed load with <10mV droop. Use Value: Enables 3-year battery life via 300nA quiescent current and eliminates need for secondary LDO stages. | Use Scenario: Real-time clock backup during main power failure, using 5.5V supercapacitor discharging to 400mV. IC Role / Device Role / Timing Role: Regulates 3.3V output while accepting input down to 400mV; blocks reverse current to prevent supercap self-discharge. Use Value: Extends RTC hold-up time by >24 hours versus diode-based solutions, with zero reverse leakage. |
| Primary-Cell Portable Systems | Wearable Medical Equipment |
Use Scenario: AAA-powered glucose monitor with Bluetooth LE transmission requiring 3.0V rail from 1.0–1.5V zinc-air battery. IC Role / Device Role / Timing Role: NanoPower boost supplying 3.0V at 15mA average; maintains regulation during 500mA BLE burst via 500mA ILIM and ETP. Use Value: Eliminates battery replacement every 6 months by reducing system quiescent current to <1µA total. | Use Scenario: Patch-style ECG sensor powered by coin cell, needing 2.7V for analog front-end and 3.3V for MCU during measurement cycles. IC Role / Device Role / Timing Role: Dual-rail generation via single MAX17223ENT+T (3.3V) + LDO (2.7V); starts reliably at 0.88V after shelf storage. Use Value: Reduces solution size by 40% vs. legacy boost + LDO combinations while meeting IEC 60601 standby current limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17222ELT+ | Identical electrical specs and pinout; same 500mA ILIM, 300nA IQ, and µDFN-6 package; differs only in tape-and-reel packaging (ELT+ vs ENT+T) | No functional difference - both support identical OHRM, RTC backup, and primary-cell use cases | Select MAX17222ELT+ for automated SMT assembly requiring 10k-unit reels; MAX17223ENT+T preferred for prototyping or low-volume production with cut-tape delivery |
| TPS61291DRVR | 400nA IQ, 0.7V startup, 400mA ILIM, 2mm × 2mm WSON-6; lacks True Shutdown (100nA shutdown current) and ETP | Suitable for less demanding primary-cell apps where 400mV operation and reverse-current blocking are not required | Choose TPS61291DRVR only if system tolerates higher shutdown current and does not require sub-400mV input sustainment |
Compared with MAX17222ELT+, the MAX17223ENT+T offers identical performance but optimized packaging for flexible order quantities; versus TPS61291DRVR, it delivers 200× lower shutdown current and guaranteed 400mV operation - essential for multi-year medical wearables and supercapacitor backup systems.
Availability
MAX17223ENT+T is available at Aetrix Electronics and suitable for optical heart-rate monitoring, supercapacitor RTC backup, and primary-cell portable systems requiring stable component supply over extended product lifecycles.
Supply support for MAX17223ENT+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 automation, and healthcare markets.
The MAX17220–MAX17225 family was designed specifically for ultra-low-power battery-powered applications where nanocurrent operation, sub-1V startup, and minimal solution size are mandatory - targeting wearables, medical sensors, and energy-harvesting systems.
FAQ
What is the minimum input voltage required for the MAX17223ENT+T to start up and regulate?
The MAX17223ENT+T has a typical startup input voltage of 0.88V under standard test conditions (RL ≥ 3kΩ, TA = +25°C). It guarantees operation down to 400mV after startup depending on load current, making it suitable for deeply discharged primary cells and supercapacitor backup rails. This value is measured with the recommended 10µF input capacitor and 2.2µH inductor.
How does the True Shutdown™ feature of the MAX17223ENT+T improve system battery life?
The MAX17223ENT+T True Shutdown™ mode draws only 0.5nA total shutdown current while fully disconnecting the output from the input, preventing both forward conduction and reverse current flow even when VOUT ranges from 0V to 5V. This eliminates parasitic discharge paths that would otherwise drain primary cells during long-term storage or system sleep, extending usable battery life by years in always-on sensor applications.
Can the MAX17223ENT+T be used with a 1.5V alkaline battery to generate 3.3V for a Bluetooth LE microcontroller?
Yes - the MAX17223ENT+T supports input voltages from 400mV to 5.5V and delivers regulated 3.3V output using a 133kΩ ±1% resistor on the SEL pin. With its 500mA peak inductor current limit and ETP functionality, it sustains regulation during 500mA BLE transmit bursts even as the alkaline battery voltage drops below 1.0V, ensuring reliable wireless connectivity throughout battery discharge.
What is the purpose of the SEL pin on the MAX17223ENT+T, and how is it configured?
The SEL pin on the MAX17223ENT+T sets the output voltage during a 600µs detection window at startup by measuring a single external resistor to GND. For 3.3V output, a 80.6kΩ ±1% resistor is used; open circuit yields 1.8V, short circuit yields 5.0V. This eliminates continuous current draw through traditional feedback dividers, preserving battery energy in ultra-low-power systems where every nanoamp matters.
Does the MAX17223ENT+T require external compensation components for stability?
No - the MAX17223ENT+T uses an internally compensated PFM control architecture and requires only two external components: a 2.2µH inductor and two 10µF X5R ceramic capacitors (one each on IN and OUT). Its fixed-on-time topology and integrated current sensing eliminate the need for external compensation networks, reducing BOM count and layout complexity while ensuring stability across all operating conditions.
MAX17223ENT+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:
- 500mA (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)
MAX17223ENT+T FAQ
1.How can I place an order for MAX17223ENT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17223ENT+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 MAX17223ENT+T reliable?
The price and inventory of MAX17223ENT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17223ENT+T is usually 5 days.
3.What payment methods are accepted for MAX17223ENT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17223ENT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17223ENT+T?
MAX17223ENT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17223ENT+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 MAX17223ENT+T?
For technical support, including MAX17223ENT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17223ENT+T requirements.
6.How does Aetrix verify that MAX17223ENT+T is sourced from the original manufacturer or authorized distributors?
All MAX17223ENT+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 MAX17223ENT+T meets industry standards.
7.What is the process for return or replacement of MAX17223ENT+T?
All MAX17223ENT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17223ENT+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 MAX17223ENT+T part is unused and in its original packaging.
Return procedure for MAX17223ENT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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