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Analog Devices Inc./Maxim Integrated MAX20343QEWE+T
- Part No.:
- MAX20343QEWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFBGA, WLBGA
- Datasheet:
-
MAX20343QEWE+T.pdf
- Description:
- IC REG BUCK BOOST PROG 1A 16WLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,561
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Product details
Overview
The MAX20343QEWE+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, 2.5V–5.5V programmable output voltage, and operation down to 1.9V input startup voltage. It serves as a primary power supply for optical biometric sensors and LPWAN radios where low noise, high efficiency, and energy harvesting from supercapacitors are critical.
For engineers reviewing the MAX20343QEWE+T datasheet, MAX20343QEWE+T pinout, MAX20343QEWE+T application, or MAX20343QEWE+T equivalent, key selection criteria include its 16-bump WLP package (1.77mm × 2.01mm), I²C-controlled configuration, -40°C to +85°C operating range, and support for dynamic voltage scaling (DVS) in photoplethysmography (PPG) systems.
Technical Context
The MAX20343QEWE+T employs a proprietary control algorithm that dynamically shifts between buck, buck-boost, and boost modes without discontinuities or subharmonic ripple-enabling stable output under wide VIN/VOUT ratios. Its valley/zero-current detection and adaptive peak current limiting ensure robust transient response across load steps from 10µA to 700mA.
It integrates dual feedback paths: a standard integrator loop for high-accuracy regulation and an optional integrator-disable mode for faster settling at reduced power (1.75W max). The FAST pin pretriggers switching response, while RSEL enables resistor-programmed VOUT with 50mV resolution-both configurable at factory or via I²C register map.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 3.5µA typical - enables multi-year battery life in always-on wearable sensors |
| Startup Input Voltage | 1.9V - allows direct start from partially discharged supercapacitors or coin cells |
| Output Power | 3.5W (integrator enabled) or 1.75W (integrator disabled) - scales performance to system headroom needs |
| Output Voltage Range | 2.5V–5.5V in 50mV steps - supports LED biasing, RF transceivers, and MCU cores |
| Operating Temp Range | -40°C to +85°C - qualified for industrial and consumer wearable environments |
| Package | 16-bump WLP, 1.77mm × 2.01mm, 0.4mm pitch - enables placement on compact optical modules |
| I²C Interface | Up to 680kHz clock, slave address 0x02 - enables real-time DVS and fault monitoring |
Pinout & Package
The MAX20343QEWE+T is housed in a 16-bump, 1.77mm × 2.01mm, 0.4mm pitch Wafer-Level Package (WLP) with I²C control interface. Bump-side-down layout requires precise land pattern per Maxim Application Note 1891 (Land Pattern Number: Refer to Application Note 1891).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CAP | Bypass capacitor connection | Stabilizes internal LDO supply; requires 470nF ceramic to GND |
| GND (A2/B2/C2) | Power ground | Primary return path for input/output currents and IC substrate |
| IN (A3/A4) | Input supply | Accepts 1.9V–5.5V input; bypassed with ≥5µF effective capacitance near pin |
| FAST / RSEL (B1) | Multifunction terminal | Factory-configured as FAST (transient pretrigger) or RSEL (VOUT programming resistor) |
| SCL / SDA (C1/D1) | I²C serial interface | Supports bidirectional communication and status interrupts (INT pin) |
| LVLX / HVLX (B3/B4/C3/C4) | Switch node connections | Drive external inductor; require low-inductance routing and Kelvin grounding |
| OUT (C4/D4) | Regulated output | Delivers programmable 2.5V–5.5V; monitored by PGOOD and INGOOD pins |
Key Features
| Feature | Design Value |
|---|---|
| Seamless buck/buck-boost/boost transition | Eliminates output voltage discontinuities and subharmonic ripple-critical for noise-sensitive PPG signal chains |
| Dynamic Voltage Scaling (DVS) | Reduces LED driver headroom in real time, cutting power consumption without compromising optical SNR |
| Ultra-low 3.5µA quiescent current | Extends battery life in intermittent-sensing wearables (e.g., wrist-based heart rate monitors) |
| Integrator enable/disable control | Switches between high-accuracy regulation (3.5W) and fast transient settling (1.75W, <10µs recovery) |
| FAST pin pretrigger | Activates anticipatory switching before load step-reducing VOUT droop by >50% vs. standard response |
Applications
| Biometric Optical Sensing (PPG) | LPWAN Radio Supply |
|---|---|
Use Scenario: Continuous heart-rate monitoring using green/red LEDs and photodiode in a wrist-worn wearable. IC Role / Device Role / Timing Role: Primary power supply for LED drivers and analog front-end, delivering low-noise 3.3V with <150mV load transient droop. Use Value: Enables 200nA LED bias currents without interference from switching ripple-preserving PPG AC signal integrity. | Use Scenario: Powering NB-IoT or LTE-M radio modules during brief transmission bursts (e.g., 100ms, 500mA peak). IC Role / Device Role / Timing Role: Buck-boost regulator buffering supercapacitor energy storage, maintaining stable 3.6V output during deep discharge. Use Value: Extracts >95% of stored energy from supercapacitor (down to 0.5V), extending transmission range and battery lifetime. |
| Industrial Sensor Node | Low-Power Wearable MCU Core |
Use Scenario: Battery-powered temperature/humidity sensor node transmitting data hourly over LoRaWAN. IC Role / Device Role / Timing Role: Main power rail generator for microcontroller, ADC, and RF transceiver-switching only during active periods. Use Value: 3.5µA IQ reduces average system current to <1µA in sleep mode, enabling 10-year coin-cell operation. | Use Scenario: Powering ARM Cortex-M0+ core and peripherals in hearable devices with tight PCB area constraints. IC Role / Device Role / Timing Role: Compact, integrated power solution replacing discrete LDO + boost converter combo. Use Value: 1.77mm × 2.01mm WLP footprint frees space for antenna or battery-no external compensation required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20344QEWE+T | Same architecture but rated for -40°C to +125°C; higher 12.5µA IQ at +125°C | Targeted for automotive cabin or industrial edge nodes requiring extended temperature operation | Select MAX20344QEWE+T only if ambient exceeds +85°C; otherwise MAX20343QEWE+T offers lower IQ and cost |
| TPS63802DLAR | 3.0V–5.5V output range; 2.5µA IQ; no I²C interface; fixed-output variants only | Lacks DVS and real-time telemetry-suitable for simpler, cost-sensitive designs without closed-loop control | Choose TPS63802DLAR when I²C telemetry and programmable VOUT are unnecessary and board space permits larger QFN |
Compared with MAX20344QEWE+T and TPS63802DLAR, the MAX20343QEWE+T uniquely balances ultra-low IQ, I²C configurability, and seamless mode transitions-making it optimal for battery-constrained, noise-sensitive optical sensing where firmware-controlled DVS delivers measurable power savings.
Availability
The MAX20343QEWE+T is available at Aetrix Electronics and suitable for biometric sensing, LPWAN radio modules, and industrial sensor nodes requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for MAX20343QEWE+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 MAX20343QEWE+T belongs to Analog Devices' ultra-low-power PMIC portfolio, engineered specifically for energy-constrained IoT endpoints-including optical biosensors and cellular LPWAN devices-where every nanoamp and millivolt matters.
FAQ
What is the minimum input voltage required for the MAX20343QEWE+T to start up?
The MAX20343QEWE+T starts up at 1.9V, enabling operation from deeply discharged supercapacitors or single-cell LiFePO₄ batteries. This specification is guaranteed across temperature and load conditions per the Absolute Maximum Ratings table. 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).
Does the MAX20343QEWE+T support dynamic voltage scaling (DVS), and how is it implemented?
Yes, the MAX20343QEWE+T supports DVS via I²C register writes to adjust VOUT in 50mV steps during runtime. This allows firmware to reduce LED driver headroom in PPG systems or lower MCU core voltage during idle states-directly reducing power loss in downstream components. DVS is enabled by default and requires no external circuitry beyond the I²C bus.
What package type and dimensions does the MAX20343QEWE+T use?
The MAX20343QEWE+T uses a 16-bump Wafer-Level Package (WLP) measuring 1.77mm × 2.01mm with 0.4mm pitch. Its package code is W161C2+1 (Outline Number 21-100328). This ultra-compact form factor is optimized for placement on remote optical modules or space-constrained wearables where traditional QFNs cannot fit.
Can the MAX20343QEWE+T operate without an I²C host controller?
Yes-the MAX20343QEWE+T supports single-pin-enabled (RSEL) configuration, where output voltage is set by an external resistor to GND. In this mode, I²C pins (SCL/SDA) are unused, and functionality is fixed at power-up. However, the MAX20343QEWE+T variant specifically is I²C-controlled; RSEL-only versions carry different part numbers (e.g., MAX20343AEWE+T).
What is the maximum output power capability of the MAX20343QEWE+T, and under what conditions?
The MAX20343QEWE+T delivers up to 3.5W output power when the integrator loop is enabled, VIN > 2.7V, and VOUT ≥ 3.2V with BBstFETScale = 0, 1µH inductor, and 8µF output capacitance. With integrator disabled, maximum power drops to 1.75W-optimized for faster transient response in burst-mode applications like LPWAN transmissions.
MAX20343QEWE+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:
- Programmable
- 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:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WLP (1.77x2.01)
MAX20343QEWE+T FAQ
1.How can I place an order for MAX20343QEWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20343QEWE+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 MAX20343QEWE+T reliable?
The price and inventory of MAX20343QEWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20343QEWE+T is usually 5 days.
3.What payment methods are accepted for MAX20343QEWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20343QEWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20343QEWE+T?
MAX20343QEWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20343QEWE+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 MAX20343QEWE+T?
For technical support, including MAX20343QEWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20343QEWE+T requirements.
6.How does Aetrix verify that MAX20343QEWE+T is sourced from the original manufacturer or authorized distributors?
All MAX20343QEWE+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 MAX20343QEWE+T meets industry standards.
7.What is the process for return or replacement of MAX20343QEWE+T?
All MAX20343QEWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20343QEWE+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 MAX20343QEWE+T part is unused and in its original packaging.
Return procedure for MAX20343QEWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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