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Analog Devices Inc./Maxim Integrated MAX1724EZK30+T
- Part No.:
- MAX1724EZK30+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX1724EZK30+T.pdf
- Description:
- IC REG BOOST 3V 400MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,446
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Product details
Overview
MAX1724EZK30+T from Maxim Integrated is a fixed-output 3.0V, synchronous step-up DC-DC converter in a 5-pin TSOT package, featuring 1.5μA quiescent current, 0.91V guaranteed startup voltage, ±1% output voltage accuracy over temperature, and integrated EMI suppression. It operates from 0.8V to 5.5V input and delivers up to 150mA output current, optimized for single-cell battery-powered medical sensors and remote transmitters.
For engineers reviewing the MAX1724EZK30+T datasheet, MAX1724EZK30+T pinout, MAX1724EZK30+T application, or MAX1724EZK30+T equivalent, key selection criteria include ultra-low IQ, fixed 3.0V output with tight regulation, TSOT footprint compatibility, shutdown control interface, and internal damping switch for EMI reduction in space-constrained portable systems.
Technical Context
The MAX1724EZK30+T employs a forced discontinuous, current-limited PFM control scheme with no external oscillator, using a 0.5Ω N-channel power switch and integrated P-channel synchronous rectifier to eliminate external diodes. Its low-voltage startup circuit is powered from the BATT pin, enabling reliable operation down to 0.91V input.
It integrates a damping switch at the LX node to suppress inductor ringing and reduce radiated EMI without degrading efficiency, while the active-low SHDN pin reduces supply current to 0.01μA (typ) at +25°C - critical for intermittent-sensing applications requiring long battery life.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1% over -40°C to +85°C - ensures stable rail for 3.3V-tolerant microcontrollers without external feedback resistors. |
| Input Voltage Range | 0.8V to 5.5V - supports single alkaline/NiMH (0.9–1.6V), Li+ (2.7–4.2V), or dual-cell configurations without external LDO pre-regulation. |
| Quiescent Current | 1.5μA into OUT - enables >1-year battery life in 10μA average-load IoT sensor nodes powered by CR2032 coin cells. |
| Shutdown Current | 0.01μA into BATT at +25°C - preserves battery charge during extended sleep modes in wearable medical devices. |
| Startup Voltage | 0.91V (guaranteed at +25°C, RL = 3kΩ) - allows operation from deeply discharged single-cell batteries before recharge. |
| Max Output Current | 150mA at VIN = 1.5V, VOUT = 3.0V - sufficient to drive BLE radio bursts or OLED display segments in handheld instruments. |
| Package | 5-pin TSOT (0.9mm height, 1.6mm × 1.6mm footprint) - enables PCB area savings vs. μDFN alternatives while maintaining thermal performance. |
Pinout & Package
MAX1724EZK30+T is housed in a 5-pin Thin SOT (TSOT) package with 0.65mm pitch, 1.6mm × 1.6mm body, and 0.9mm typical height - optimized for ultra-thin portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BATT | Battery input and damping switch connection | Primary power path; powers low-voltage startup circuit - enables 0.91V cold-start without external biasing. |
| SHDN | Active-low shutdown control input | Logic-compatible input (VIL ≤ 75mV, VIH ≥ 500mV); pulls IC into 0.01μA shutdown state when grounded. |
| GND | Analog and power ground reference | Single ground pin shared by control logic and power stage - requires low-inductance connection to minimize switching noise coupling. |
| OUT | Regulated power output and bootstrap supply | Delivers 3.0V @ up to 150mA; also supplies internal gate drivers - eliminates need for external bootstrap capacitor. |
| LX | Switch node connecting internal N-FET drain and P-FET drain | High-frequency switching node (up to ~1MHz); requires short, low-loop-area routing to minimize EMI and ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated P-channel MOSFET replaces external Schottky diode - reduces BOM count, board area, and conduction losses by ~0.3V drop elimination. |
| EMI-suppressing damping switch | Internal clamp at LX node actively dissipates inductor ring energy - lowers radiated emissions without adding external RC snubber components. |
| Ultra-low quiescent current | 1.5μA supply current into OUT - extends shelf life and operational runtime in battery-gauged medical patches and environmental loggers. |
| Guaranteed 0.91V startup | Validated minimum input for functional start-up at +25°C with 3kΩ load - enables use with aging primary cells where voltage sag exceeds standard boost thresholds. |
| Fixed 3.0V output precision | ±1% initial accuracy and ±1.5% over full temperature range - meets tight tolerance requirements of analog front-ends and RF power amplifiers. |
Applications
| Wireless Remote Transmitter | Personal Medical Sensor |
|---|---|
Use Scenario: Battery-powered sub-GHz ISM band transmitter sending periodic vital-sign telemetry from a wrist-worn pulse oximeter. IC Role / Device Role / Timing Role: Primary 3.0V power rail generator for RF transceiver and signal conditioning ASIC, activated only during transmission bursts. Use Value: 0.01μA shutdown current prevents battery drain between 5-minute transmissions; 0.91V startup ensures operation until cell reaches end-of-life at ~0.95V. |
Use Scenario: Disposable glucose monitor strip reader using a CR2016 coin cell with 3-year shelf life requirement. IC Role / Device Role / Timing Role: Step-up regulator supplying 3.0V to ADC, electrochemical sensor interface, and Bluetooth LE SoC during 10-second measurement cycles. Use Value: 1.5μA quiescent current limits standby loss to <0.1% of CR2016 capacity per year; TSOT package fits within 12mm × 12mm PCB constraint. |
| Digital Still Camera Flash LED Driver | Low-Power Hand-Held Instrument |
Use Scenario: Compact point-and-shoot camera using single AA alkaline cell to power white LED flash at 3.0V/120mA for 100ms bursts. IC Role / Device Role / Timing Role: High-efficiency boost converter delivering regulated 3.0V to LED driver IC, synchronized to shutter release signal via SHDN pin. Use Value: Up to 90% efficiency at 100mA minimizes battery heating; internal damping switch eliminates need for EMI filter on camera's sensitive image sensor PCB. |
Use Scenario: Pocket-sized multimeter with auto-ranging LCD and isolated serial interface, powered by two AAA cells. IC Role / Device Role / Timing Role: Fixed 3.0V supply for microcontroller, precision op-amps, and RS-232 level shifter - active only during measurement mode. Use Value: ±1% output accuracy maintains ADC reference stability across temperature; TSOT footprint allows placement adjacent to MCU without compromising layout symmetry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1724ELT30+T | Same electrical specs but in 6-pin µDFN (2mm × 2mm × 0.75mm); includes NC pin; higher thermal dissipation rating (219mW vs. 180mW). | Preferred for thermally constrained designs needing >150mA continuous output or tighter thermal management. | Select MAX1724ELT30+T when board space permits larger footprint and thermal performance outweighs height sensitivity. |
| TPS61200DRCT | Fixed 3.0V output, 1.2μA IQ, but requires external Schottky diode; no integrated damping switch; 0.95V min startup. | Suitable for cost-sensitive designs where EMI filtering can be added externally and board area is less constrained. | Choose TPS61200DRCT only if BOM cost reduction justifies added diode, filter components, and marginally higher EMI risk. |
Compared with MAX1724ELT30+T, the MAX1724EZK30+T offers lower profile (0.9mm vs. 0.75mm height is misstated - actual TSOT height is 0.9mm, µDFN is 0.75mm; thus TSOT trades height for smaller footprint) and simpler layout, while TPS61200DRCT lacks integrated EMI suppression and synchronous rectification - increasing component count and potential failure points in field-deployed medical devices.
Availability
MAX1724EZK30+T is available at Aetrix Electronics and suitable for wireless remote transmitters, personal medical sensors, digital still camera flash modules, and low-power hand-held instruments requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MAX1724EZK30+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
Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for power management, sensing, and communication applications in industrial, medical, and consumer markets.
The MAX1722/MAX1723/MAX1724 family was engineered specifically for ultra-low-power, single-cell battery applications demanding minimal quiescent current, compact size, and robust EMI behavior - targeting portable healthcare, remote sensing, and energy-harvesting edge nodes.
FAQ
What is the guaranteed minimum startup voltage for MAX1724EZK30+T?
The MAX1724EZK30+T guarantees startup at 0.91V input voltage at +25°C with a 3kΩ load, as specified in the Electrical Characteristics table. This value is validated across production units and ensures reliable operation from weak or aging single-cell batteries before recharge is possible. The startup voltage rises slightly with temperature and load, reaching 0.95V at +85°C under same conditions.
Does MAX1724EZK30+T require external components for basic operation?
No, the MAX1724EZK30+T requires only an external inductor (typically 10μH), input capacitor (≥10μF ceramic), and output capacitor (≥10μF ceramic) for full functionality. Unlike adjustable variants, it needs no feedback resistors due to its factory-trimmed 3.0V output. The integrated synchronous rectifier and damping switch eliminate external diodes and snubbers, reducing total component count to four passive parts.
How does the SHDN pin function on MAX1724EZK30+T?
The SHDN pin on MAX1724EZK30+T is an active-low logic input: driving it below 75mV (VIL) places the device in shutdown mode, reducing BATT supply current to 0.01μA (typ) at +25°C. Pulling SHDN high (≥500mV) enables normal regulation. The pin tolerates voltages up to 6V regardless of BATT or OUT levels, allowing direct interfacing with 3.3V or 5V microcontrollers without level shifting.
What package type is used for MAX1724EZK30+T and what are its dimensions?
The MAX1724EZK30+T uses a 5-pin Thin SOT (TSOT) package with outline number 21-0113, measuring 1.6mm × 1.6mm × 0.9mm (L × W × H). Its land pattern (90-0241) features 0.65mm pitch, and the top mark is "ADQI". This package provides superior height control versus µDFN options while maintaining thermal performance adequate for 150mA continuous loads at ambient temperatures ≤+70°C.
Is MAX1724EZK30+T RoHS-compliant and lead-free?
Yes, MAX1724EZK30+T is RoHS-compliant and lead-free, indicated by the "+" suffix in its package code per Maxim's ordering nomenclature. The device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) and is rated for lead-free reflow soldering at +260°C peak temperature, making it compatible with standard Pb-free assembly processes.
MAX1724EZK30+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 400mA (Switch)
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MAX1724EZK30+T FAQ
1.How can I place an order for MAX1724EZK30+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1724EZK30+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 MAX1724EZK30+T reliable?
The price and inventory of MAX1724EZK30+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1724EZK30+T is usually 5 days.
3.What payment methods are accepted for MAX1724EZK30+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1724EZK30+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1724EZK30+T?
MAX1724EZK30+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1724EZK30+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 MAX1724EZK30+T?
For technical support, including MAX1724EZK30+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1724EZK30+T requirements.
6.How does Aetrix verify that MAX1724EZK30+T is sourced from the original manufacturer or authorized distributors?
All MAX1724EZK30+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 MAX1724EZK30+T meets industry standards.
7.What is the process for return or replacement of MAX1724EZK30+T?
All MAX1724EZK30+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1724EZK30+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 MAX1724EZK30+T part is unused and in its original packaging.
Return procedure for MAX1724EZK30+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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