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Analog Devices Inc./Maxim Integrated MAX20343MEWE+T
- Part No.:
- MAX20343MEWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFBGA, WLBGA
- Datasheet:
-
MAX20343MEWE+T.pdf
- Description:
- IC REG BUCK BOOST PROG 1A 16WLP
- Quantity:
- Payment:
- Shipping:
Inventory:3,050
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Product details
Overview
The MAX20343MEWE+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 buck/buck-boost/boost mode transitions, 1.9V startup voltage, and 2.5V–5.5V programmable output range - designed for optical biometric sensors and LPWAN radio power supplies where low noise and energy harvesting efficiency are critical.
For engineers reviewing the MAX20343MEWE+T datasheet, MAX20343MEWE+T pinout, MAX20343MEWE+T application, or MAX20343MEWE+T equivalent, key selection criteria include its 16-bump WLP package (1.77mm × 2.01mm), I²C-controlled operation, dynamic voltage scaling (DVS) support, ultra-low 500mV minimum input operating voltage capability, and integrated FAST pin for load transient pre-triggering.
Technical Context
The MAX20343MEWE+T employs a proprietary state-machine-driven control algorithm that eliminates subharmonics and discontinuities across its full input range (1.9V–5.5V), enabling stable regulation even during deep discharge of supercapacitors or primary batteries. Its architecture integrates valley/zero-current detection (IVALLEY/IZERO), adjustable peak current limits (BBstIPSet1/BBstIPSet2), and optional feedback integrator disable for optimized transient response.
It supports two configuration modes: I²C-controlled (with SCL/SDA/INT pins) and single-pin-enabled (RSEL-based VOUT programming), both implemented in the same 16-bump WLP package. The device features dual high-side/low-side switch drivers (HVLX/LVLX), active discharge (20mA), and PGOOD/INGOOD monitoring with 2.25% hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 3.5µA typical at 3.7V input - enables multi-year battery life in always-on wearable sensors. |
| Startup Voltage | 1.9V - allows direct start from partially discharged Li-SOCl₂ or coin cells. |
| Output Power | 3.5W max with integrator enabled - sufficient for pulsed LED drive in PPG systems. |
| Output Voltage Range | 2.5V–5.5V in 50mV steps - supports variable headroom requirements for RF transceivers and analog front-ends. |
| Input Voltage Range | 1.9V–5.5V continuous - accommodates wide supercapacitor discharge curves (0.5V–5.5V usable via external circuitry). |
| Load Transient Response | ±150mV deviation at 10µA→700mA step - minimizes LED current droop during photoplethysmography sampling. |
| PGOOD Threshold | 84.7% of VOUT with 2.25% hysteresis - ensures reliable system enable sequencing under varying load conditions. |
Pinout & Package
MAX20343MEWE+T is packaged in a 16-bump, 0.4mm pitch wafer-level package (WLP), measuring 1.77mm × 2.01mm, with exposed die pad for thermal performance. This ultra-compact WLP variant is I²C-controlled and optimized for space-constrained optical modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CAP | Bypass capacitor connection | Requires 470nF ceramic to GND for internal LDO stability; decouples high-frequency switching noise. |
| IN (A3, A4) | Main input supply | Dual-pad connection lowers impedance; requires ≥5µF effective capacitance placed adjacent to pins. |
| OUT (C3, C4) | Regulated output | Dual-pad layout reduces output impedance; supports up to 3.5W into 2.2µH/4µF or 1µH/8µF LC networks. |
| LVLX (B3, B4) | Low-side switch driver | Drives external low-side MOSFET; must be routed with minimal loop area to reduce EMI. |
| HVLX (C1, D1) | High-side switch driver | Drives external high-side MOSFET; pairs with LVLX for synchronous buck-boost topology. |
| SCL / SDA / INT | I²C interface & status | Supports 400–680kHz clock; INT asserts on fault or status change - enables host MCU event-driven monitoring. |
| GND (A2, B2, C2) | Power and signal ground | Three dedicated ground bumps provide low-inductance return path for power and logic circuits. |
| FAST | Transient response enhancer | Pulling FAST high increases IQ to ~35µA and accelerates load step recovery - used during LED pulse bursts. |
Key Features
| Feature | Design Value |
|---|---|
| Seamless mode transition | Eliminates output voltage discontinuities and subharmonic ripple across 1.9V–5.5V input range - removes need for post-regulation LDO in noise-sensitive PPG systems. |
| Dynamic Voltage Scaling (DVS) | Enables real-time VOUT adjustment via I²C to match instantaneous LED or RF PA requirements - reduces average power by up to 30% in duty-cycled applications. |
| Ultra-low 500mV operating voltage | Allows extraction of residual energy from supercapacitors down to 0.5V with external charge pump assist - extends usable runtime in energy-harvested LPWAN nodes. |
| Configurable integrator loop | Integrator can be disabled to trade 1.75W max output for faster load settling (<10µs) - ideal for burst-mode sensor wake-ups. |
| FAST pin pretrigger | Asserting FAST before load step reduces output deviation by >40% versus standard response - critical for maintaining LED current accuracy during PPG acquisition windows. |
Applications
| Biometric Optical Sensing (PPG) | LPWAN Radio Supply (NB-IoT/Cat-M1) |
|---|---|
Use Scenario: Continuous heart-rate monitoring using green/red LEDs on wrist-worn wearable with coin-cell battery. IC Role / Device Role / Timing Role: Primary power regulator supplying programmable, low-noise VOUT to LED driver IC; enables DVS-synchronized LED current pulses. Use Value: 3.5µA quiescent current extends battery life beyond 2 years; <150mV load transient deviation preserves PPG signal SNR at 100dB. | Use Scenario: Battery-powered NB-IoT sensor node transmitting 20-second bursts every 10 minutes using LTE Cat-M1 modem. IC Role / Device Role / Timing Role: High-efficiency buck-boost supplying 3.3V/1.5A to RF transceiver during TX burst; operates down to 1.9V input during supercapacitor discharge. Use Value: Seamless mode transition avoids brownout during voltage sag; 3.5W capability meets peak TX power demand without external boost stage. |
| Industrial Wireless Sensor Node | Low-Power Medical Patch Monitor |
Use Scenario: Temperature/humidity sensor with LoRaWAN backhaul, powered by primary lithium thionyl chloride cell. IC Role / Device Role / Timing Role: Main power converter enabling cold-start from 2.0V cell voltage; provides stable 3.0V rail to MCU and radio during 50ms transmit events. Use Value: 1.9V startup ensures operation over full cell lifetime; ultra-low IQ minimizes self-discharge impact on 10-year shelf life. | Use Scenario: Discrete ECG patch with 7-day wear time, requiring minimal board area and zero audible noise. IC Role / Device Role / Timing Role: Single-chip power solution replacing LDO + boost combo; powers analog front-end and BLE SoC from single CR2032. Use Value: WLP package fits within 4mm² footprint; near-zero output ripple eliminates switching artifacts in microvolt-level ECG signals. |
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; fixed 3.3V/5V outputs only; no DVS or FAST pin; 2.5mm × 2.5mm QFN-11 | Lacks programmable VOUT and transient pretrigger - unsuitable for PPG LED current modulation. | Select when fixed output and lower cost outweigh DVS and ultra-low IQ requirements. |
| LT8330EDDB#TRMPBF | 40µA IQ; wider 2.8V–40V input; requires external MOSFETs; 3mm × 2mm DFN-10 | Higher IQ and larger solution size - compromises battery life and PCB area in compact wearables. | Prefer for industrial applications with wide VIN and higher power (>5W), not for space/noise-constrained biometrics. |
Compared with TPS63802DLAR and LT8330EDDB#TRMPBF, the MAX20343MEWE+T uniquely combines sub-4µA quiescent current, I²C-programmable DVS, and FAST-triggered transient response in a 1.77mm × 2.01mm WLP - making it the only viable choice for multi-year optical biosensors demanding simultaneous ultra-low power and precision dynamic regulation.
Availability
MAX20343MEWE+T is available at Aetrix Electronics and suitable for biometric sensing, LPWAN radio power, industrial wireless sensor nodes, and low-power medical patch monitors requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX20343MEWE+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, communications, and industrial markets.
The MAX20343MEWE+T belongs to Analog Devices' ultra-low-power PMIC portfolio, engineered specifically for energy-constrained, noise-sensitive applications including optical biosensors and cellular IoT endpoints where every microamp and millivolt matters.
FAQ
What is the minimum input voltage required for the MAX20343MEWE+T to start up?
The MAX20343MEWE+T requires a minimum input voltage of 1.9V to initiate startup. This low threshold enables reliable operation from partially discharged primary batteries or supercapacitors. Once running, the device continues regulating down to inputs as low as 500mV when configured with appropriate external circuitry - a capability confirmed in the Electrical Characteristics table under "Maximum Output Operative Power" notes.
Does the MAX20343MEWE+T support dynamic voltage scaling (DVS), and how is it implemented?
Yes, the MAX20343MEWE+T supports Dynamic Voltage Scaling (DVS) via its I²C interface. DVS allows real-time adjustment of the output voltage in 50mV steps between 2.5V and 5.5V to match changing load requirements - for example, lowering VOUT during LED standby and raising it during pulse emission in PPG systems. This feature is explicitly documented in the Benefits and Features section and Register Map of the datasheet.
What package type and dimensions does the MAX20343MEWE+T use?
The MAX20343MEWE+T uses a 16-bump, 0.4mm pitch wafer-level package (WLP) measuring 1.77mm × 2.01mm. This ultra-compact package is specified in the Package Information section and Pin Configurations diagram as "W161C2+1". It is distinct from the FC2QFN option and is the only package offered for the MAX20343MEWE+T ordering variant.
Can the MAX20343MEWE+T operate with an input voltage below 1.9V after startup?
Yes - while the MAX20343MEWE+T requires ≥1.9V to start, it can continue operating with input voltages as low as 500mV once running, provided the integrator is disabled and output power is limited to ≤1.75W. This behavior is verified in the Electrical Characteristics table under "Maximum Output Operative Power" with BBstFETScale = 1 and is critical for maximizing energy extraction from supercapacitors in LPWAN applications.
How does the FAST pin improve load transient response in the MAX20343MEWE+T?
The FAST pin on the MAX20343MEWE+T pretriggers the control loop ahead of expected load steps - for instance, asserting FAST just before an LED pulse begins. This increases quiescent current from 3.5µA to ~35µA temporarily, reducing output voltage deviation by >40% during 10µA→700mA transients. This mechanism is detailed in the Benefits and Features section and confirmed in the Load Transient Response specification (±150mV).
MAX20343MEWE+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)
MAX20343MEWE+T FAQ
1.How can I place an order for MAX20343MEWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20343MEWE+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 MAX20343MEWE+T reliable?
The price and inventory of MAX20343MEWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20343MEWE+T is usually 5 days.
3.What payment methods are accepted for MAX20343MEWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20343MEWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20343MEWE+T?
MAX20343MEWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20343MEWE+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 MAX20343MEWE+T?
For technical support, including MAX20343MEWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20343MEWE+T requirements.
6.How does Aetrix verify that MAX20343MEWE+T is sourced from the original manufacturer or authorized distributors?
All MAX20343MEWE+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 MAX20343MEWE+T meets industry standards.
7.What is the process for return or replacement of MAX20343MEWE+T?
All MAX20343MEWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20343MEWE+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 MAX20343MEWE+T part is unused and in its original packaging.
Return procedure for MAX20343MEWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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