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Analog Devices Inc./Maxim Integrated MAX20303BEWN+
- Part No.:
- MAX20303BEWN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- 56-WFBGA, WLBGA
- Datasheet:
-
MAX20303BEWN+.pdf
- Description:
- IC BATT PWR MGMT 56WLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,167
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Product details
Overview
MAX20303BEWN+ from Analog Devices is a highly integrated, ultra-low-quiescent-current PMIC designed for wearable and small Li-ion systems. It integrates two Micro-IQ buck regulators (220mA, <1µA IQ), a micro-IQ buck-boost (250mW), three LED current sinks (0.6–30mA), an ERM/LRA haptic driver with automatic resonance tracking, fuel gauge, JEITA-compliant battery charger (5–500mA), and I²C-programmable power sequencing - all in a 56-bump WLP package.
For engineers reviewing the MAX20303BEWN+ datasheet, MAX20303BEWN+ pinout, MAX20303BEWN+ application, or MAX20303BEWN+ equivalent, this page delivers verified regulator output ranges, thermal-protected charging profiles, factory-programmable button control logic, haptic driver operating modes (PPWM/ETRG/RAMHP), and precise ADC-monitored supply voltages - critical for battery-constrained IoT and medical wearables.
Technical Context
The MAX20303BEWN+ implements a multi-rail, event-driven power architecture where each regulator operates independently under I²C-configurable voltage, sequencing, and enable timing. Its fuel gauge uses ModelGauge m5 algorithm with coulomb counting and temperature-compensated voltage modeling to deliver ±5% state-of-charge accuracy across -40°C to +85°C.
Charging control integrates smart power selection with 28V/-5.5V tolerant input, programmable JEITA voltage/current profiles, and thermal shutdown. The haptic subsystem supports LRA resonance tracking, quick-start braking, and four interface modes (Pure-PWM, RTI2C, ETRG, RAMHP) - all managed via dedicated registers and interrupt reporting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Buck1 Output | 0.8V–2.375V in 25mV steps; 220mA max; <1µA quiescent current enables always-on sensor rail |
| Buck2 Output | 0.8V–3.95V in 50mV steps; 220mA max; independent enable and sequencing control |
| Buck-Boost Output | 2.5V–5.0V in 100mV steps; 250mW max; 1.3µA IQ supports low-power display bias |
| LED Current Sinks | 3 channels; 0.6–30mA programmable per channel; 20V tolerant for direct OLED backlight drive |
| Charger Current Range | 5mA–500mA fast-charge; JEITA profile programmable for safe Li-ion thermal management |
| Fuel Gauge Accuracy | ±5% SOC over full temperature range; ModelGauge m5 algorithm with voltage + current + temp compensation |
| Operating Temperature | -40°C to +85°C extended range; validated for wrist-worn wearable thermal environments |
Pinout & Package
MAX20303BEWN+ is housed in a 56-bump, 0.5mm pitch wafer-level package (WLP) measuring 3.71mm × 4.21mm, optimized for space-constrained wearable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply | 28V/-5.5V tolerant; feeds Smart Power Selector and charger input stage |
| VBAT | Battery connection | Direct Li-ion cell interface with battery seal, fuel gauge sensing, and charge path control |
| VOUT1–VOUT4 | Regulated outputs | Four dedicated power rails: Buck1, Buck2, Boost, Buck-Boost - each with independent enable and voltage setting |
| LED1–LED3 | Current sink outputs | Three 20V-tolerant, digitally programmable sinks for status indicators or display backlighting |
| HAPTIC | Haptic driver output | Differential ERM/LRA driver with automatic resonance tracking and amplitude control |
| SCL/SDA | I²C interface | Standard-mode (100kHz) and fast-mode (400kHz) compatible; supports register read/write and interrupt polling |
| INT | Interrupt output | Open-drain alert signal for charger status, fuel gauge threshold, haptic completion, or thermal fault |
Key Features
| Feature | Design Value |
|---|---|
| Micro-IQ Buck Regulation | Two sub-1µA IQ bucks enable >1-year battery life in always-on wearable sensors without compromising 220mA peak load capability |
| Factory-Programmable Button Controller | Multi-input UX engine supporting long/short press, double-tap, and hold-detection - configured at manufacturing, no runtime firmware required |
| Automatic LRA Resonance Tracking | Real-time impedance monitoring and frequency adjustment ensures consistent haptic intensity across mechanical aging and temperature drift |
| Integrated Fuel Gauge | ModelGauge m5 algorithm eliminates external coulomb counter IC; provides accurate SOC, remaining capacity, and time-to-empty with no calibration |
| JEITA-Compliant Charging | Programmable cold/hot voltage and current limits prevent Li-ion degradation during charging at extreme ambient temperatures |
Applications
| Smart Fitness Tracker | Medical Wearable Patch |
|---|---|
Use Scenario: Continuous heart-rate and SpO₂ monitoring with optical sensors active 24/7. IC Role / Device Role / Timing Role: Primary PMIC managing sensor bias rails, optical LED drivers, and low-power MCU core supply. Use Value: Sub-1µA buck IQ extends battery life to 14+ days on a 120mAh cell while maintaining real-time sensor responsiveness. |
Use Scenario: Single-use, disposable ECG patch requiring 7-day clinical-grade operation. IC Role / Device Role / Timing Role: Integrated power manager handling battery seal, precision analog sensor supplies, and regulated haptic alerts. Use Value: Factory-programmed button controller enables patient-initiated data sync; fuel gauge reports remaining clinical session time with ±5% accuracy. |
| AR Smart Glasses Display | Industrial Asset Tag |
Use Scenario: Micro-OLED display backlighting with dynamic brightness control and haptic feedback for gesture confirmation. IC Role / Device Role / Timing Role: Dual-role IC providing boost-regulated display bias and closed-loop LRA haptics synchronized to UI events. Use Value: 3-channel LED sinks drive RGB micro-OLED with 0.6–30mA granularity; automatic resonance tracking maintains tactile fidelity across device flex and temperature shifts. |
Use Scenario: Battery-powered BLE asset tracker logging location and temperature every 15 minutes. IC Role / Device Role / Timing Role: Ultra-low-power system manager enabling deep-sleep between transmissions and rapid wake-up sequencing. Use Value: Programmable supply sequencing powers RF transceiver only after sensor and MCU rails stabilize; hibernate mode draws <1µA system-wide. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20312EWN+ | Single-buck + single-LDO PMIC; no fuel gauge, no haptic driver, no boost; 1.2µA IQ (buck) | Lacks battery telemetry and haptics; suitable only for simpler wearables without user feedback or runtime SOC awareness | Select when system requires only basic dual-rail regulation and cost sensitivity outweighs fuel gauge/haptic integration |
| BQ25150YFPT | Standalone linear charger + LDO; no buck regulators, no fuel gauge, no haptics; 350nA IQ (LDO) | Charger-only function; requires external regulators and fuel gauge IC; no programmable sequencing or button logic | Choose when existing design already includes discrete power rails and only battery charging functionality must be upgraded |
Compared with MAX20303BEWN+, MAX20312EWN+ reduces integration depth but lowers BOM count for minimal wearables, while BQ25150YFPT serves as a drop-in charger upgrade without altering system power architecture.
Availability
MAX20303BEWN+ is available at Aetrix Electronics and suitable for wearable devices, medical patches, and industrial asset tags requiring stable component supply, long-term lifecycle support, and guaranteed traceability for ISO 13485 and IEC 62304 compliance.
Supply support for MAX20303BEWN+ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving precision instrumentation, healthcare, and industrial markets since 1965.
The MAX20303BEWN+ belongs to Analog Devices' ultra-low-power wearable PMIC product line, engineered specifically to replace discrete power solutions in size- and battery-limited Li-ion systems while delivering certified fuel gauging and haptic feedback.
FAQ
What is the maximum output current of the MAX20303BEWN+ buck regulators?
The MAX20303BEWN+ integrates two Micro-IQ buck regulators, each rated for 220mA continuous output current. Buck1 supports 0.8V–2.375V in 25mV steps; Buck2 supports 0.8V–3.95V in 50mV steps. Both maintain <1µA quiescent current, making them ideal for always-on wearable sensor rails. Peak current capability is validated per Electrical Characteristics table in the official datasheet Rev 13.
Does the MAX20303BEWN+ include a built-in fuel gauge, and what accuracy does it achieve?
Yes, the MAX20303BEWN+ includes a ModelGauge m5 fuel gauge with coulomb counting and adaptive voltage/temperature modeling. It achieves ±5% state-of-charge (SOC) accuracy across the full -40°C to +85°C operating range without user calibration. The gauge reports VCELL, SOC, remaining capacity, and time-to-empty via I²C registers including VCELL (0x02), SOC (0x04), and HIBRT (0x0A).
Can the MAX20303BEWN+ drive both ERM and LRA haptic actuators?
Yes, the MAX20303BEWN+ haptic driver supports both ERM (eccentric rotating mass) and LRA (linear resonant actuator) types. For LRAs, it provides automatic resonance tracking, quick-start, and breaking control. For ERMs, it delivers fixed-frequency PWM drive with amplitude modulation. Interface modes include Pure-PWM, Real-Time I²C, External Triggered Stored Pattern (ETRG), and RAM Stored Haptic Pattern (RAMHP).
What JEITA profiles are supported by the MAX20303BEWN+ battery charger?
The MAX20303BEWN+ battery charger supports fully programmable JEITA-compliant charging profiles, including pre-charge, fast-charge, and maintain-charge phases with independent voltage and current thresholds for cold, normal, warm, and hot temperature zones. Profiles are configured via Charger Configuration Commands (pages 95–103 of datasheet Rev 13) and enforced using internal temperature sensing and VBAT monitoring.
Is the MAX20303BEWN+ pinout compatible with other devices in the MAX203xx family?
No, the MAX20303BEWN+ has a unique 56-bump WLP pinout optimized for its full feature set - including three LED sinks, haptic driver, and dual-buck topology. Pin compatibility is not claimed with MAX20312EWN+ (42-bump) or MAX20323 (36-bump). Layout reuse requires verification against the Bump Configuration diagram (page 40) and Bump Description table (page 41) in the MAX20303BEWN+ datasheet.
MAX20303BEWN+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- ModelGauge™
- Package/Case:
- 56-WFBGA, WLBGA
- Packaging:
- Strip
- Product Status:
- Active
- Function:
- Power Management
- Battery Chemistry:
- -
- Number of Cells:
- -
- Fault Protection:
- Over Current, Over Temperature
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-WLP (4.18x3.68)
MAX20303BEWN+ FAQ
1.How can I place an order for MAX20303BEWN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20303BEWN+ 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 MAX20303BEWN+ reliable?
The price and inventory of MAX20303BEWN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20303BEWN+ is usually 5 days.
3.What payment methods are accepted for MAX20303BEWN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20303BEWN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20303BEWN+?
MAX20303BEWN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20303BEWN+ 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 MAX20303BEWN+?
For technical support, including MAX20303BEWN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20303BEWN+ requirements.
6.How does Aetrix verify that MAX20303BEWN+ is sourced from the original manufacturer or authorized distributors?
All MAX20303BEWN+ 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 MAX20303BEWN+ meets industry standards.
7.What is the process for return or replacement of MAX20303BEWN+?
All MAX20303BEWN+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20303BEWN+, 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 MAX20303BEWN+ part is unused and in its original packaging.
Return procedure for MAX20303BEWN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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