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Analog Devices Inc./Maxim Integrated MAX18000AWT+T
- Part No.:
- MAX18000AWT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WFBGA, WLBGA
- Datasheet:
-
MAX18000AWT+T.pdf
- Description:
- IC REG BOOST ADJ 6WLP
- Quantity:
- Payment:
- Shipping:
Inventory:3,194
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Product details
Overview
MAX18000AWT+T from Analog Devices is a nanoPower synchronous boost converter IC designed for ultra-low-power battery-powered systems. It operates from 0.5V to 5.5V input, delivers 2.5V–5.5V adjustable output (in 100mV steps), features 512nA quiescent current, 3.6A cycle-by-cycle current limit, and True Shutdown™ with 7nA shutdown current. It is used in wearable sensors and IoT edge nodes requiring multi-year standby life.
For engineers reviewing the MAX18000AWT+T datasheet, MAX18000AWT+T pinout, MAX18000AWT+T application, or MAX18000AWT+T equivalent, key selection criteria include its 1.8V minimum start-up voltage, 95% peak efficiency at light loads (>20µA), adaptive on-time current-mode control, and WLP package compatibility with space-constrained PCB layouts.
Technical Context
The MAX18000AWT+T implements an adaptive on-time current-mode control architecture that dynamically adjusts switch-on time based on VIN and VOUT to maintain fast transient response and high efficiency across load ranges. It transitions between nanoPower mode (≤28kHz switching, error amplifier disabled), skip mode, and continuous conduction mode (CCM) depending on load current.
Its integrated power switches feature 60mΩ high-side and 30mΩ low-side RDS(ON), enabling efficient operation down to 20µA load while maintaining ≥90% efficiency. Protection includes cycle-by-cycle inductor current limiting (3.6A typ), short-circuit detection (<0.5V VOUT, 700mA current limit), and thermal shutdown at +165°C (typ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.5V to 5.5V - supports single-cell alkaline, NiMH, or LiSOCl₂ primary batteries; 1.8V min start-up enables cold-start from depleted cells. |
| Output Voltage Range | 2.5V to 5.5V in 100mV steps - set by single external 1% resistor on RSEL pin; no feedback resistors required, eliminating associated power loss. |
| Quiescent Current | 512nA into OUT - enables >10-year battery life in µA-load applications such as RTC backup or sensor sleep states. |
| Switching Frequency | 2MHz typical - allows use of small 330nH–470nH inductors and compact 0603 ceramic capacitors, minimizing solution footprint. |
| Current Limit | 3.6A peak inductor current - protects internal MOSFETs and external components during overload or short-circuit events. |
| Shutdown Current | 7nA - ensures near-zero leakage when disabled, critical for energy-harvesting or intermittent wake-up systems. |
| Operating Temp | −40°C to +125°C - qualified for industrial and automotive under-hood environments without derating. |
Pinout & Package
The MAX18000AWT+T is housed in a 1.07mm × 1.57mm, 0.5mm pitch, 6-bump wafer-level package (WLP) with bottom-side solder bumps. This ultra-compact package enables direct integration into wearables and miniaturized IoT modules where board area is constrained.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Switching node | Connects to inductor; carries high di/dt current; requires short, wide trace routing to minimize parasitic inductance and voltage spikes. |
| IN | Input power supply | Accepts 0.5V–5.5V source; must be decoupled with ≥22µF X5R 0603 ceramic capacitor placed adjacent to pin. |
| EN | Enable control input | Digital logic input; active-high (VIH ≥ 1.2V); pulls low to engage True Shutdown™ with full input-output isolation and 7nA IQ. |
| RSEL | Analog voltage select | Resistor-to-GND sets output voltage (2.5V–5.5V); total capacitance must be <2pF to ensure accurate ADC reading within 600–1320µs. |
| GND | Power ground | System ground reference; connects to low-impedance PCB ground plane via multiple vias directly beneath package bumps. |
| OUT | Regulated output | Delivers adjustable VOUT; requires 2×22µF X5R 0603 ceramics; includes active discharge path (100Ω) to GND when EN = low. |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ mode | 7nA shutdown current with complete VIN–VOUT isolation - eliminates reverse leakage and forward conduction, preserving battery charge during system sleep. |
| nanoPower PFM operation | 512nA IQ and automatic entry into ultra-low-power mode below 28kHz - sustains >90% efficiency at loads as low as 20µA for decade-scale battery life. |
| Single-resistor VOUT programming | 2.5V–5.5V in 100mV steps using one external 1% resistor - reduces BOM count, saves PCB area, and avoids feedback resistor power loss. |
| Integrated short-circuit protection | 700mA hard-short current limit with auto-restart - prevents thermal runaway during output faults without external circuitry or latch-up behavior. |
| Adaptive on-time control | 2MHz switching with VIN/VOUT-dependent on-time adjustment - delivers fast load transients and stable regulation across wide input/output ratios. |
Applications
| Wearable Health Sensors | IoT Edge Node Power |
|---|---|
|
Use Scenario: Continuous ECG/PPG monitoring in wrist-worn devices powered by coin-cell batteries. IC Role / Device Role / Timing Role: Primary boost regulator supplying 3.3V to ultra-low-power MCU and analog front-end during active sensing and deep-sleep cycles. Use Value: 512nA quiescent current extends battery life beyond 3 years; True Shutdown™ eliminates leakage during motion-triggered wake-up intervals. |
Use Scenario: Battery-powered environmental sensor node transmitting data every 5 minutes via BLE or LoRa. IC Role / Device Role / Timing Role: System power manager converting 1.5V alkaline cell output to stable 3.3V for RF transceiver and microcontroller. Use Value: 1.8V start-up voltage enables operation until battery depletion; 95% peak efficiency minimizes heat generation in sealed enclosures. |
| Metering Data Loggers | Industrial Wireless Transmitters |
|
Use Scenario: Smart water/gas meter with 10-year battery life requirement and periodic ultrasonic flow measurement bursts. IC Role / Device Role / Timing Role: High-efficiency boost stage powering precision ADC, analog signal chain, and real-time clock during measurement windows. Use Value: Adaptive on-time control maintains tight output regulation during rapid load transitions; −40°C to +125°C rating ensures field reliability. |
Use Scenario: Hazardous-area temperature transmitter using intrinsic safety barriers and 4–20mA loop power. IC Role / Device Role / Timing Role: Auxiliary power rail generator for isolated digital interface and sensor excitation circuitry from limited loop energy. Use Value: 3.6A current limit supports brief high-current sensor excitation pulses; short-circuit protection prevents fault propagation in safety-critical loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanoPower boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61291DRVR | Higher 1.2µA IQ; fixed 3.3V/5V outputs only; no RSEL-based programmability; 2.5V min VIN. | Lacks adjustable output and sub-1µA IQ; suitable only where fixed VOUT suffices and higher IQ is acceptable. | Select MAX18000AWT+T when output voltage flexibility, 512nA IQ, or 0.5V VIN capability is required. |
| LTC3525EDC-3.3#TRMPBF | Fixed 3.3V output; 20µA IQ; 600mA current limit; larger 2mm × 2mm DFN package. | Not suitable for ultra-long-life or space-constrained designs; lacks True Shutdown™ and short-circuit current limiting. | Choose MAX18000AWT+T for applications demanding lowest IQ, programmable VOUT, or robust fault protection in minimal footprint. |
Compared with TPS61291DRVR and LTC3525EDC-3.3#TRMPBF, the MAX18000AWT+T uniquely combines sub-1µA quiescent current, single-resistor VOUT adjustability, 0.5V start-up, and integrated short-circuit/thermal protection in a 1.07mm × 1.57mm WLP-enabling new levels of energy efficiency and design flexibility in miniature battery-powered systems.
Availability
MAX18000AWT+T is available at Aetrix Electronics and suitable for wearable health monitors, IoT sensor nodes, and industrial data loggers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX18000AWT+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 MAX18000AWT+T belongs to Analog Devices' nanoPower DC-DC converter product line, engineered specifically for battery-operated edge devices where multi-year operation, minimal footprint, and robust fault tolerance are mandatory design requirements.
FAQ
What is the minimum input voltage required for MAX18000AWT+T to start up?
The MAX18000AWT+T has a typical minimum start-up voltage of 1.8V. It will not initiate switching until the input voltage rises above this threshold, even if the nominal input range extends down to 0.5V after startup. This ensures reliable biasing of internal circuitry during cold-start conditions from partially discharged batteries.
How does the RSEL pin configure the output voltage on MAX18000AWT+T?
The MAX18000AWT+T uses a single external resistor connected between the RSEL pin and GND to set the output voltage from 2.5V to 5.5V in precise 100mV steps. The internal ADC reads the resistor value; a 191kΩ resistor configures 3.3V output. Resistor tolerance must be ±1% to ensure accuracy within the specified ±1% output regulation.
Does MAX18000AWT+T provide output disconnect during shutdown?
Yes, MAX18000AWT+T features True Shutdown™ mode: when the EN pin is pulled low, both input-to-output forward conduction and reverse current paths are fully disconnected, resulting in only 7nA shutdown current. This eliminates battery drain and prevents backfeeding in multi-rail systems.
What protection features are integrated into MAX18000AWT+T?
The MAX18000AWT+T integrates cycle-by-cycle inductor current limiting (3.6A typ), output short-circuit protection (700mA current limit when VOUT < 0.5V), thermal shutdown (+165°C typ), and active discharge (100Ω path from OUT to GND during shutdown). These functions operate autonomously without external components.
Can MAX18000AWT+T operate efficiently at very light loads?
Yes, MAX18000AWT+T achieves ≥90% efficiency at loads as low as 20µA by entering nanoPower mode-where the error amplifier and auxiliary circuits are disabled and switching frequency drops below 28kHz. Its 512nA quiescent current ensures minimal overhead, making it ideal for intermittent-sensing applications.
MAX18000AWT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFBGA, 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):
- 0.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- -
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLP (1.07x1.57)
MAX18000AWT+T FAQ
1.How can I place an order for MAX18000AWT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX18000AWT+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 MAX18000AWT+T reliable?
The price and inventory of MAX18000AWT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX18000AWT+T is usually 5 days.
3.What payment methods are accepted for MAX18000AWT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX18000AWT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX18000AWT+T?
MAX18000AWT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX18000AWT+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 MAX18000AWT+T?
For technical support, including MAX18000AWT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX18000AWT+T requirements.
6.How does Aetrix verify that MAX18000AWT+T is sourced from the original manufacturer or authorized distributors?
All MAX18000AWT+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 MAX18000AWT+T meets industry standards.
7.What is the process for return or replacement of MAX18000AWT+T?
All MAX18000AWT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX18000AWT+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 MAX18000AWT+T part is unused and in its original packaging.
Return procedure for MAX18000AWT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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