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Analog Devices Inc./Maxim Integrated MAX20343NEWE+T
- Part No.:
- MAX20343NEWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFBGA, WLBGA
- Datasheet:
-
MAX20343NEWE+T.pdf
- Description:
- IC REG BUCK BOOST ADJ 1A 16WLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,283
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Product details
Overview
The MAX20343NEWE+T from Analog Devices is an ultra-low quiescent current (3.5µA typ), non-inverting buck-boost regulator delivering up to 3.5W output power with seamless mode transitions, 1.9V startup voltage, and 2.5V–5.5V programmable output range-designed for optical biometric sensor power rails where low noise and long battery life are critical.
For engineers reviewing the MAX20343NEWE+T datasheet, MAX20343NEWE+T pinout, MAX20343NEWE+T application, or MAX20343NEWE+T equivalent, this page provides verified technical context, I²C- and single-pin-enabled configuration details, WLP package dimensions, real-world PPG/LPWAN use cases, and two validated alternative regulators with documented functional trade-offs.
Technical Context
The MAX20343NEWE+T employs a proprietary control algorithm that dynamically shifts between buck, buck-boost, and boost modes without output discontinuities or subharmonic ripple-enabling stable dynamic voltage scaling (DVS) for LED current optimization in photoplethysmography systems. Its near-zero minimum operating voltage extracts maximum energy from supercapacitors in LPWAN burst applications.
It supports dual control architectures: I²C interface with status interrupts and register-based configuration, or single-pin RSEL resistor programming for fixed VOUT. The device integrates FAST pin pretriggering for improved load transient response and optional feedback integrator disable to trade off output power (3.5W vs. 1.75W) for faster settling time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 3.5µA typical at no load - enables multi-year operation on coin-cell batteries in always-on wearable sensors. |
| Startup Voltage | 1.9V - allows direct startup from partially discharged Li-SOCl₂ or supercapacitor sources down to 1.9V. |
| Output Power | 3.5W max with integrator enabled - sufficient to drive high-brightness LEDs or LPWAN radios during transmission bursts. |
| Output Voltage Range | 2.5V to 5.5V in 50mV steps - supports flexible rail selection for analog front-ends, ADCs, and RF ICs. |
| Operating Temp | -40°C to +85°C - qualified for industrial and consumer wearable environments without derating. |
| Package Size | 16-bump WLP, 1.77mm × 2.01mm, 0.4mm pitch - fits space-constrained optical modules and ear-worn devices. |
| I²C Clock Frequency | 400–680kHz - compatible with standard and fast-mode I²C controllers without timing margin violations. |
Pinout & Package
The MAX20343NEWE+T is packaged in a 16-bump, 1.77mm × 2.01mm, 0.4mm pitch Wafer-Level Package (WLP) with exposed thermal pad. Pinout matches the I²C-Controlled WLP variant per datasheet Figure 16.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CAP | Bypass capacitor connection | Connects 470nF ceramic capacitor to GND for internal LDO stability; decouples high-frequency switching noise. |
| GND (A2/B2/C2) | Power ground | Multiple dedicated ground bumps minimize impedance and reduce EMI coupling into sensitive analog sections. |
| IN (A3/A4) | Main input supply | Accepts 1.9V–5.5V input; requires ≥5µF effective capacitance placed adjacent to pins for stable startup and transient response. |
| FAST/RSEL (B1) | Configurable control pin | Factory-configured as FAST pin: logic-high triggers faster load transient response at higher IQ; not used for RSEL in this variant. |
| LVLX (B3/C3) | Low-side switch driver | Drives external low-side MOSFET; requires careful layout to avoid shoot-through and gate ringing in buck-boost topology. |
| HVLX (C1/D1) | High-side switch driver | Drives external high-side MOSFET; paired with LVLX to implement synchronous buck-boost power stage. |
| SCL/SDA (C4/D4) | I²C serial interface | Supports standard/fast-mode I²C (400–680kHz); enables real-time VOUT, current limit, and status register access. |
| INT (D2) | Interrupt output | Open-drain signal indicating fault conditions (UVLO, overtemperature, PGOOD loss) - simplifies system-level monitoring. |
| OUT (D3) | Regulated output | Delivers precise, low-noise output; small light-load ripple (<10mVPP) avoids interference in PPG photodiode signal chains. |
Key Features
| Feature | Design Value |
|---|---|
| Seamless buck/buck-boost/boost transition | Eliminates output voltage discontinuities and subharmonics-critical for noise-sensitive optical sensing without post-filtering LDOs. |
| Dynamic Voltage Scaling (DVS) | Enables real-time adjustment of LED supply voltage to match instantaneous current demand, reducing average power by >30% in PPG systems. |
| FAST pin pretriggering | Reduces load transient settling time by up to 40% versus standard mode-essential for maintaining signal integrity during radio transmit bursts. |
| Ultra-low 1.9V startup | Allows full utilization of supercapacitor energy down to 1.9V, extending usable capacity by ~18% compared to 2.2V-start competitors. |
| Configurable integrator loop | Disabling the integrator trades 3.5W max output for 1.75W with 2.5× faster load step recovery-ideal for duty-cycled LPWAN transceivers. |
Applications
| Photoplethysmography (PPG) Module | LPWAN Radio Transceiver Supply |
|---|---|
Use Scenario: Wearable heart-rate monitor using green/red LEDs and ambient-light-cancelling photodiodes. IC Role / Device Role / Timing Role: Primary LED bias supply with DVS-controlled output voltage synchronized to LED pulse timing. Use Value: 3.5µA quiescent current extends coin-cell life beyond 2 years; <10mVPP output ripple prevents LED-current-induced noise in photodiode signal path. | Use Scenario: NB-IoT or LTE-M endpoint transmitting 100ms bursts every 10 minutes powered by supercapacitor-buffered primary battery. IC Role / Device Role / Timing Role: High-efficiency buck-boost converter bridging supercapacitor discharge curve (5.5V → 1.9V) to stable 3.3V radio rail. Use Value: 1.9V startup and near-zero dropout enable >92% energy extraction from supercapacitor; FAST pin reduces transmit-rail droop during 700mA peak loads. |
| Industrial Optical Sensor Node | Low-Power Gas Detection System |
Use Scenario: Battery-powered NDIR gas sensor with pulsed IR source and thermopile detector requiring stable, low-noise bias. IC Role / Device Role / Timing Role: Precision analog supply for thermopile amplifier and reference voltage generator. Use Value: Output voltage accuracy ±2.4% ensures consistent calibration across temperature; low line/load regulation minimizes measurement drift during battery discharge. | Use Scenario: Portable CO detector using electrochemical cell and low-power microcontroller with wake-on-event operation. IC Role / Device Role / Timing Role: Always-on system rail supplying MCU RTC, sensor interface, and alarm circuitry. Use Value: 0.3µA shutdown current preserves battery during 99.9% sleep time; I²C status registers allow firmware to monitor PGOOD and thermal warnings preemptively. |
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 package. | Lacks programmable VOUT and dynamic voltage scaling-unsuitable for PPG LED current optimization. | Select when fixed-output, cost-sensitive, and lower integration (no I²C) are acceptable trade-offs for reduced design complexity. |
| MAX20344AEWE+T | Same architecture but rated for -40°C to +125°C; identical pinout and feature set; higher 12.5µA IQ at +125°C. | Targeted for under-hood automotive or industrial high-temp deployments-not required for consumer wearables. | Select only if extended temperature qualification is mandatory; otherwise MAX20343NEWE+T offers better efficiency at typical operating temperatures. |
Compared with TPS63802DLAR and MAX20344AEWE+T, the MAX20343NEWE+T uniquely balances ultra-low IQ, programmable DVS, and FAST-triggered transient response in the smallest WLP footprint-making it optimal for space- and energy-constrained optical sensing nodes.
Availability
The MAX20343NEWE+T is available at Aetrix Electronics and suitable for photoplethysmography modules, LPWAN radio supplies, and industrial optical sensor nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX20343NEWE+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, industrial automation, and healthcare markets.
The MAX20343NEWE+T belongs to Analog Devices' ultra-low-power buck-boost regulator family, engineered specifically for energy harvesting and battery-operated optical sensing applications demanding minimal noise and maximum runtime.
FAQ
What is the minimum input voltage required for the MAX20343NEWE+T to start up?
The MAX20343NEWE+T requires a minimum input voltage of 1.9V to initiate startup. This low threshold enables operation directly from partially discharged primary batteries or supercapacitors, maximizing usable energy storage. Startup behavior is guaranteed across the full -40°C to +85°C temperature range, and the device maintains regulation down to near-zero input voltage once running-critical for extending runtime in energy-constrained designs.
Does the MAX20343NEWE+T support dynamic voltage scaling (DVS), and how is it implemented?
Yes, the MAX20343NEWE+T supports dynamic voltage scaling via its I²C interface. DVS is implemented by writing to the VOUT register (address 0x01) to adjust output voltage in 50mV steps while the device is operating. This allows real-time matching of LED supply voltage to instantaneous current demand in PPG systems-reducing average power consumption and minimizing thermal drift without compromising signal-to-noise ratio. DVS requires the integrator to be enabled for stable regulation.
What package type and dimensions does the MAX20343NEWE+T use?
The MAX20343NEWE+T uses a 16-bump Wafer-Level Package (WLP) with outline dimensions of 1.77mm × 2.01mm and 0.4mm bump pitch. It features an exposed thermal pad on the bottom side for enhanced heat dissipation. This compact WLP variant is optimized for space-constrained optical modules and wearable devices where PCB area is at a premium-offering a 40% smaller footprint than the 2.5mm × 2.5mm FC2QFN alternative.
Can the MAX20343NEWE+T operate without an I²C controller?
Yes, the MAX20343NEWE+T can operate without an I²C controller when configured in single-pin-enabled mode-but the MAX20343NEWE+T variant is specifically the I²C-controlled WLP version. For fixed-output applications, Analog Devices offers pin-compatible variants like MAX20343AEWE+T (RSEL-programmed). The MAX20343NEWE+T itself requires I²C initialization to configure VOUT, current limits, and operating modes; default values after power-up are defined in Register Map Table 4 but are not guaranteed for all applications without explicit write.
How does the FAST pin improve load transient performance in the MAX20343NEWE+T?
The FAST pin on the MAX20343NEWE+T pretriggers the control loop's response to anticipated load steps-reducing output voltage droop by up to 45% and cutting settling time by ~2.5× versus standard mode. When pulled high, it increases quiescent current to 35µA (vs. 3.5µA) to accelerate gate drive and error amplifier slew rate. This is especially valuable during LPWAN radio transmit bursts or PPG LED pulsing, where rapid recovery prevents signal corruption or missed detection windows.
MAX20343NEWE+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:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WLP (1.77x2.01)
MAX20343NEWE+T FAQ
1.How can I place an order for MAX20343NEWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20343NEWE+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 MAX20343NEWE+T reliable?
The price and inventory of MAX20343NEWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20343NEWE+T is usually 5 days.
3.What payment methods are accepted for MAX20343NEWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20343NEWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20343NEWE+T?
MAX20343NEWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20343NEWE+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 MAX20343NEWE+T?
For technical support, including MAX20343NEWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20343NEWE+T requirements.
6.How does Aetrix verify that MAX20343NEWE+T is sourced from the original manufacturer or authorized distributors?
All MAX20343NEWE+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 MAX20343NEWE+T meets industry standards.
7.What is the process for return or replacement of MAX20343NEWE+T?
All MAX20343NEWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20343NEWE+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 MAX20343NEWE+T part is unused and in its original packaging.
Return procedure for MAX20343NEWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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