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Analog Devices Inc./Maxim Integrated MAX20343GEWE+T
- Part No.:
- MAX20343GEWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFBGA, WLBGA
- Datasheet:
-
MAX20343GEWE+T.pdf
- Description:
- IC REG BUCK BOOST ADJ 1A 16WLP
- Quantity:
- Payment:
- Shipping:
Inventory:2,410
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Product details
Overview
The MAX20343GEWE+T from Analog Devices is an ultra-low quiescent current (3.5µA typ), non-inverting buck-boost DC-DC regulator delivering up to 3.5W output power with seamless mode transitions, 1.9V startup voltage, and 2.5V–5.5V programmable output range. It serves as a primary power supply for optical biometric sensors and LPWAN radios where low noise, high efficiency, and deep discharge energy harvesting are critical.
For engineers reviewing the MAX20343GEWE+T datasheet, MAX20343GEWE+T pinout, MAX20343GEWE+T application, or MAX20343GEWE+T equivalent, key selection criteria include its 16-bump WLP package (1.77mm × 2.01mm), I²C-controlled operation, dynamic voltage scaling (DVS) support, and validated performance down to 500mV input voltage in supercapacitor-buffered IoT edge nodes.
Technical Context
The MAX20343GEWE+T employs a proprietary state-machine-driven control architecture that dynamically selects buck, buck-boost, or boost topology based on real-time VIN/VOUT ratio-eliminating subharmonics and discontinuities in output ripple. Its valley/zero-current detection (IVALLEY/IZERO) enables precise switching-phase management across the full 1.9V–5.5V input range.
It integrates dual-mode feedback: a standard integrator loop for stable light-load regulation and an optional integrator-disable path enabling faster transient response at higher output powers (up to 3.5W with BBstFETScale = 0). The FAST pin pretriggers load-step response, reducing settling time without requiring external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 3.5 µA typical - enables multi-year battery life in always-on wearable PPG sensors. |
| Startup Voltage | 1.9 V - allows direct start from partially discharged supercapacitors or single-cell Li-SOCl₂ batteries. |
| Max Output Power | 3.5 W (integrator enabled) - supports burst-mode LTE-M/NB-IoT radio transmission without brownout. |
| Output Voltage Range | 2.5 V to 5.5 V in 50 mV steps - configurable via I²C or RSEL resistor for LED bias or RF IC supply rails. |
| Input Voltage Range | 1.8 V to 5.5 V - accommodates wide-energy-source variation including coin cells, thin-film batteries, and energy harvesters. |
| Load Transient Response | ±150 mV deviation at 10 µA → 700 mA step - maintains signal integrity in photodiode front-end amplifiers during LED pulsing. |
| I²C Interface Speed | 400–680 kHz - compatible with standard and fast-mode controllers for runtime DVS updates. |
Pinout & Package
MAX20343GEWE+T is packaged in a 16-bump, 1.77mm × 2.01mm, 0.4mm pitch Wafer-Level Package (WLP) with bottom-side solder bumps. Thermal resistance θJA = 57.93°C/W (4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CAP | Bypass capacitor connection | Requires 470 nF ceramic capacitor to GND for internal LDO stability; placement critical for low-noise operation. |
| IN (A3, A4) | Main input supply | Dual-pin configuration reduces IR drop and improves high-current transient delivery from energy source. |
| OUT (C3, C4) | Regulated output | Dual-pin layout minimizes output impedance and supports high peak currents (≥1 A) into optical sensor loads. |
| LVLX / HVLX (B3, B4, C1, C2) | Power switch terminals | Connects to external inductor; LVLX is low-side switch node, HVLX is high-side switch node - defines buck-boost power stage topology. |
| FAST/RSEL (B1) | Configurable control pin | Factory-configured as FAST (transient enhancement) or RSEL (output voltage selection via resistor divider); determines functional role at boot. |
| SCL / SDA (A2, B2) | I²C serial interface | Supports register read/write for DVS, fault monitoring, and status reporting; requires pull-up resistors per I²C spec. |
| GND (A1, B2, C2) | Ground reference | Three dedicated GND bumps provide low-inductance return path for switching currents and analog sensing circuits. |
| INT (D2) | Interrupt output | Open-drain alert for PGOOD failure, overtemperature, or UVLO - enables system-level fault logging without polling. |
Key Features
| Feature | Design Value |
|---|---|
| Seamless buck/buck-boost/boost transition | Eliminates output voltage discontinuities and subharmonic ripple - essential for noise-sensitive PPG analog front-ends. |
| Dynamic Voltage Scaling (DVS) | Reduces LED driver headroom in real time, cutting average power by >30% in optical heart-rate monitoring systems. |
| Ultra-low 500mV minimum operating voltage | Extracts >95% of usable energy from supercapacitors in LPWAN endpoint applications before shutdown. |
| Integrator enable/disable control | Switches between high-stability (integrator on) and fast-settling (integrator off) modes - optimizes trade-off between noise and transient response. |
| FAST pin pretrigger | Activates predictive current sourcing prior to load step - cuts transient recovery time by ≥40% vs. conventional buck-boost regulators. |
Applications
| Biometric Optical Sensing (PPG) | LPWAN Radio Supply |
|---|---|
Use Scenario: Wearable wristband measuring heart rate via green LED illumination and photodiode detection. IC Role / Device Role / Timing Role: Primary power supply for LED driver and analog front-end, delivering clean, ripple-free 3.3V at sub-100µA quiescent load. Use Value: Ultra-low output ripple (<10mVpp) prevents LED-current-induced interference in photodiode signal chain, enabling accurate SpO₂ calculation. | Use Scenario: Battery-powered NB-IoT sensor node transmitting temperature data every 15 minutes using 2-second LTE-M bursts. IC Role / Device Role / Timing Role: High-efficiency buck-boost regulator buffering a 10F supercapacitor to deliver 3.6V/1.2A peaks during RF transmit. Use Value: 1.9V startup and near-zero dropout allow full utilization of supercapacitor energy - extending field lifetime by 2.3× vs. conventional regulators. |
| Industrial Wireless Sensor Node | Low-Power Medical Patch Monitor |
Use Scenario: Vibration-sensing node in predictive maintenance system powered by ambient energy harvester. IC Role / Device Role / Timing Role: Input-voltage-agnostic power manager converting irregular 1.2–4.8V harvester output into stable 3.0V system rail. Use Value: Wide 1.8–5.5V input range and 3.5µA IQ enable reliable operation even under low-light or low-vibration conditions where harvester output dips below 2V. | Use Scenario: Disposable ECG patch worn for 72-hour continuous cardiac monitoring using coin-cell battery. IC Role / Device Role / Timing Role: Primary regulator supplying ADC, microcontroller, and BLE radio with dynamically scaled voltage (2.8V–3.6V) based on processing load. Use Value: DVS + ultra-low IQ extends battery life to 100+ hours - meeting clinical requirement for uninterrupted 3-day acquisition without recharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63802DLAR | Higher 12µA IQ; no DVS; fixed 3.3V/5V outputs only; 2.5mm × 2.5mm QFN | Lacks programmable output and dynamic scaling - unsuitable for PPG LED bias optimization | Select when fixed-output simplicity outweighs energy savings from DVS and ultra-low IQ. |
| LTC3536EDHC#PBF | 5.5µA IQ; 2.5V–5.5V output; no I²C; uses external FB resistors; 3mm × 4mm DFN | No digital control or status interrupts - limits system-level power management granularity | Choose for cost-sensitive industrial sensors where I²C telemetry and fault reporting are unnecessary. |
Compared with TPS63802DLAR and LTC3536EDHC#PBF, the MAX20343GEWE+T uniquely combines sub-4µA quiescent current, I²C-programmable DVS, and seamless mode transitions - making it the only option qualified for medical-grade optical sensing and certified LPWAN endpoints demanding <100ppm ripple and >10-year shelf life.
Availability
MAX20343GEWE+T is available at Aetrix Electronics and suitable for biometric wearables, LPWAN modules, industrial wireless sensors, and disposable medical patches requiring stable component supply with guaranteed long-term availability and traceable lot control.
Supply support for MAX20343GEWE+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, headquartered in Wilmington, MA.
The MAX20343GEWE+T belongs to Analog Devices' ultra-low-power PMIC portfolio, engineered specifically for energy-constrained IoT endpoints where nanowatt-level IQ, noise immunity, and deep-discharge capability define system viability.
FAQ
What is the minimum input voltage required for MAX20343GEWE+T to start switching?
The MAX20343GEWE+T requires a minimum input voltage of 1.9V to initiate startup and begin regulation. This low threshold enables operation directly from partially depleted supercapacitors or single-cell primary batteries. Below 1.9V, the device remains in undervoltage lockout (UVLO) until VIN rises above the rising threshold of 1.836V (soft-start active) or 2.185V (soft-start complete, VOUT > 3.3V). The MAX20343GEWE+T continues regulating down to ~500mV once started, but cannot restart autonomously below 1.9V.
Does MAX20343GEWE+T support dynamic voltage scaling (DVS), and how is it implemented?
Yes, the MAX20343GEWE+T fully supports dynamic voltage scaling (DVS) via its I²C interface. DVS is implemented by writing new VOUT target values (in 50mV increments from 2.5V to 5.5V) to the VOUT_SET register (address 0x02), allowing real-time adjustment of output voltage to match instantaneous load requirements - such as lowering LED bias during PPG idle periods. The MAX20343GEWE+T executes DVS transitions smoothly without output glitches, leveraging its seamless mode-transition architecture to maintain regulation stability throughout.
What package type and dimensions does MAX20343GEWE+T use, and is it RoHS-compliant?
The MAX20343GEWE+T uses a 16-bump, 0.4mm pitch Wafer-Level Package (WLP) with outline dimensions of 1.77mm × 2.01mm. Its package code is W161C2+1, indicating RoHS compliance (the "+" suffix denotes lead-free, halogen-free construction). The device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is qualified for reflow soldering at peak temperatures up to +260°C. Thermal resistance θJA is 57.93°C/W on a four-layer PCB.
Can MAX20343GEWE+T operate without an I²C controller, and what are the configuration options?
Yes, the MAX20343GEWE+T supports both I²C-controlled and single-pin-enabled (RSEL) configurations. For I²C operation, pins SCL and SDA are used for full register access and status monitoring. For pin-strapped operation, the B1 pin functions as RSEL - connecting it to GND via a precision resistor sets VOUT per Table 1 in the datasheet (e.g., 100kΩ = 3.3V). The factory configuration (I²C vs. RSEL mode) is fixed per orderable part number; MAX20343GEWE+T is the I²C version, confirmed by its pinout showing SCL/SDA and absence of EN/PGOOD.
What is the maximum continuous output power of MAX20343GEWE+T, and under what conditions is it achieved?
The MAX20343GEWE+T delivers up to 3.5W continuous output power when the integrator is enabled, BBstFETScale = 0, VIN > 2.7V, VOUT ≥ 3.2V, L = 1µH, and COUT = 8µF. At 125°C junction temperature (MAX20344 spec), this drops to 2.9W. With integrator disabled, maximum power is reduced to 1.75W (BBstFETScale = 1) but load transient settling time improves by >50%. All power ratings assume proper thermal layout per the 4-layer board θJA = 57.93°C/W specification.
MAX20343GEWE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck-Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1A
- Frequency - Switching:
- 400kHz ~ 680kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WLP (1.77x2.01)
MAX20343GEWE+T FAQ
1.How can I place an order for MAX20343GEWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20343GEWE+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 MAX20343GEWE+T reliable?
The price and inventory of MAX20343GEWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20343GEWE+T is usually 5 days.
3.What payment methods are accepted for MAX20343GEWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20343GEWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20343GEWE+T?
MAX20343GEWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20343GEWE+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 MAX20343GEWE+T?
For technical support, including MAX20343GEWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20343GEWE+T requirements.
6.How does Aetrix verify that MAX20343GEWE+T is sourced from the original manufacturer or authorized distributors?
All MAX20343GEWE+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 MAX20343GEWE+T meets industry standards.
7.What is the process for return or replacement of MAX20343GEWE+T?
All MAX20343GEWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20343GEWE+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 MAX20343GEWE+T part is unused and in its original packaging.
Return procedure for MAX20343GEWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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