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Analog Devices Inc./Maxim Integrated MAX14750BEWA+T
- Part No.:
- MAX14750BEWA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 25-WFBGA, WLBGA
- Datasheet:
-
MAX14750BEWA+T.pdf
- Description:
- IC REG TRIPLE BUCK/BST/LNR 25WLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,346
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Product details
Overview
MAX14750BEWA+T from Analog Devices is a highly integrated power-management IC designed as a companion PMIC for rechargeable battery systems, featuring independent pin control of a 250mW buck-boost regulator (2.5V–5V output), a 200mA synchronous buck regulator (1.0V–2.0V), a 100mA micro-IQ LDO (0.9V–4.0V), and a 200mA load switch with battery monitoring. It operates from 1.8V to 5.5V input and delivers <1µA off-state current in seal mode-enabling ultra-low-power wearable medical and fitness devices.
For engineers reviewing the MAX14750BEWA+T datasheet, MAX14750BEWA+T pinout, MAX14750BEWA+T application, or MAX14750BEWA+T equivalent, this device supports I²C configuration, individual enable pins per function (SWEN, BEN, LEN, HVEN), programmable sequencing timing, and battery impedance measurement-critical for space-constrained, battery-life-optimized designs requiring flexible, discrete control over each power rail.
Technical Context
The MAX14750BEWA+T implements a dual-regulator architecture with burst-mode operation for light-load efficiency: its buck-boost converter (1.78–2.25MHz) supports wide-input (1.8V–5.5V) and programmable output (2.5V–5V) with ±3% accuracy, while its buck regulator delivers 1.0V–2.0V at up to 250mA with 0.9µA quiescent current. Both switching regulators integrate soft-start, UVLO, thermal shutdown (150°C), and active/passive discharge.
Its 100mA LDO provides 0.9V–4.0V output with ±3.1% accuracy, 100mV dropout at 100mA, and configurable switch-mode operation (RON = 1Ω at 1.8V); the integrated 200mA load switch offers 250mΩ on-resistance at 2.7V, programmable soft-start, short-circuit protection (460mA typical), and dedicated battery isolation for impedance measurement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Buck-Boost Output | 2.5V–5.0V programmable in 100mV steps; enables single-rail biasing for displays or sensors across varying battery voltage. |
| Buck Regulator IQ | 0.9µA typical; sustains multi-week shelf life in always-on wearables without compromising startup responsiveness. |
| LDO Accuracy | ±3.1% over load/temperature; ensures stable MCU core voltage even during dynamic sensor sampling bursts. |
| Load Switch RON | 0.25Ω max at 2.7V; minimizes voltage drop and self-heating during continuous 200mA system loads. |
| I²C Interface | Standard-mode (400kHz) with open-drain SDA/SCL; allows runtime reconfiguration of all regulators and sequencer timing. |
| Operating Temp | −40°C to +85°C; qualified for clinical-grade wearable environments including body-worn ECG patches. |
| Package | 25-bump WLP (2.26mm × 2.14mm, 0.4mm pitch); enables PCB area reduction below 5mm² for compact hearables. |
Pinout & Package
MAX14750BEWA+T uses a 25-bump wafer-level package (WLP), 2.26mm × 2.14mm, 0.4mm pitch, with exposed die pad for thermal performance. Bump-side-down mounting requires precise stencil design per JEDEC JESD51-7 four-layer board guidelines (θJA = 52.43°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | BIN | Buck regulator input; must be connected to HVIN on PCB-shared supply node for buck and buck-boost stages. |
| A2 | BLX | Buck switch node; connects to external inductor-requires low-inductance layout to minimize EMI during 2MHz switching. |
| A3 | BOUT | Buck output; bypassed with 10µF ceramic capacitor to GND-critical for transient response under 200mA load steps. |
| A4 | LIN | LDO input; accepts 1.71V–5.5V; internal UVLO prevents regulation if LIN falls below 1.64V (rising threshold). |
| A5 | LOUT | LDO output; programmable 0.9V–4.0V; supports both linear regulation and switch-mode (1Ω RON) for low-noise or high-efficiency modes. |
| B1 | MON | Multiplexer output; monitors SWIN, SWOUT, BIN, HVIN, HVOUT, LIN, LOUT, BOUT via internal analog switches-enables single-ADC battery health tracking. |
| C1 | SDA | I²C data line; open-drain, 1.4V VIH min (non-seal mode); used for register read/write, fault logging, and dynamic VOUT adjustment. |
| C4 | BEN | Active-high buck enable; direct hardware control bypasses I²C-allows immediate rail activation during wake-from-sleep events. |
| C5 | SWOUT | Power switch output; connects to system loads; 100µF bulk cap required for battery impedance measurement stability. |
| D1 | SCL | I²C clock input; 400kHz max; synchronizes all register accesses and status reads without CPU intervention. |
| D3 | SWEN | Active-high switch enable; controls 200mA load switch independently-used for battery isolation during storage or diagnostics. |
| D4 | LEN | Active-high LDO enable; decouples LDO control from buck/buck-boost-supports mixed-voltage SoC architectures. |
| D5 | CAP | Internal decoupling node; requires 0.1µF ceramic to GND-stabilizes internal reference and reduces noise coupling into analog blocks. |
| E1 | HVOUT | Buck-boost output; 2.5V–5.0V programmable; supplies display bias, RF front-end, or sensor excitation rails with tight ±3% regulation. |
| E4 | HVIN | Buck-boost input; tied to BIN on PCB-ensures coordinated UVLO behavior between buck and buck-boost regulators. |
| E5 | HVEN | Active-high buck-boost enable; hardware-controlled rail activation-eliminates I²C latency for time-critical high-voltage subsystems. |
Key Features
| Feature | Design Value |
|---|---|
| Micro-IQ Buck-Boost Regulator | 1.1µA quiescent current with burst mode enables >1-year battery life in 10µA average-current wearable applications. |
| Individual Hardware Enable Pins | SWEN, BEN, LEN, HVEN allow deterministic, glitch-free power-up sequencing without firmware dependency or I²C bus contention. |
| Battery Impedance Measurement | Integrated current source (250–8000µA) and SAR ADC enable real-time battery health estimation using only SWOUT and MON pins. |
| Programmable Soft-Start | Configurable 0.65ms or 13.8ms turn-on for load switch-prevents inrush current damage to Li-ion cells during cold start. |
| Thermal Protection | 150°C shutdown with 21°C hysteresis across all regulators-guarantees safe operation in sealed enclosures with no airflow. |
| I²C Register Control | Full configuration of output voltages, UVLO thresholds, sequencing delays, and discharge modes-enables one-firmware support across multiple battery chemistries. |
Applications
| Wearable Medical Monitoring | Portable Diagnostic Patch |
|---|---|
|
Use Scenario: Continuous 24/7 ECG and SpO₂ sensing in a coin-cell-powered chest patch worn for 7-day clinical trials. IC Role / Device Role / Timing Role: MAX14750BEWA+T powers analog front-end (2.5V), MCU core (1.2V), and BLE radio (3.3V via LDO) with independent enable timing to minimize active time. Use Value: 0.9µA buck IQ and 1.1µA buck-boost IQ extend usable battery life from 5 to 8 days-meeting FDA-required minimum wear duration. |
Use Scenario: Single-use, disposable glucose monitor with embedded NFC for patient data upload and battery health reporting. IC Role / Device Role / Timing Role: MAX14750BEWA+T isolates battery during shelf storage (seal mode, 120nA), then sequences sensor bias (HVOUT), ADC reference (LDO), and NFC transceiver (BOUT) on button press. Use Value: Battery impedance measurement via MON pin validates cell health before first use-reducing field returns due to weak batteries. |
| Fitness Tracker with Display | Smart Hearing Aid |
|
Use Scenario: OLED-display wristband with motion-triggered screen wake, requiring fast 3.3V rail ramp-up and low-noise 1.8V sensor supply. IC Role / Device Role / Timing Role: MAX14750BEWA+T uses HVEN and BEN pins for hardware-triggered rail activation, while LDO supplies low-noise 1.8V to accelerometer and gyroscope. Use Value: 150µVRMS LDO output noise prevents motion artifact corruption in raw IMU data-improving step-count accuracy by >12%. |
Use Scenario: Rechargeable in-ear hearing aid with adaptive gain control, requiring ultra-low standby current and rapid wake from deep sleep. IC Role / Device Role / Timing Role: MAX14750BEWA+T maintains 1.2V DSP core in retention mode (LDO enabled, buck/buck-boost off) with <2µA total IQ, then ramps all rails in <25ms on acoustic trigger. Use Value: 24ms boot time (vs. 9.9ms for MAX14720) is optimized for hearing aid's latency budget-ensuring zero audio dropout during speech onset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14720BEWA+T | Includes integrated push-button sequencer, delayed reset, and true off-state control; lacks individual enable pins. | Optimized for non-rechargeable coin-cell systems requiring shipping-mode seal and automatic on/off; not pin-compatible. | Select MAX14720BEWA+T when firmware-free power sequencing and ultra-low-shelf-current (<120nA) are mandatory. |
| TPS65218D0RSLR | Quad-buck + LDO + RTC + fuel gauge; larger 48-pin QFN; 12µA typical IQ; no battery impedance measurement. | Targets industrial tablets and HMIs needing higher current (up to 3A buck), RTC backup, and battery telemetry-not suitable for sub-5mm² wearables. | Choose TPS65218D0RSLR only when system requires >500mA rails, integrated RTC, or TI ecosystem compatibility. |
Compared with MAX14720BEWA+T, the MAX14750BEWA+T trades sequencer automation for deterministic hardware control-making it superior for rechargeable systems where host MCU must orchestrate power states. Versus TPS65218D0RSLR, it sacrifices current capacity and feature count for 75% smaller footprint and 13× lower quiescent current-critical for Class II medical wearables.
Availability
MAX14750BEWA+T is available at Aetrix Electronics and suitable for wearable medical devices, portable diagnostic patches, fitness trackers with displays, and smart hearing aids requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant wafer-level packaging.
Supply support for MAX14750BEWA+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 MAX14750BEWA+T belongs to Analog Devices' micro-IQ power-management portfolio, engineered specifically for ultra-low-power, space-constrained battery-operated medical and consumer wearables demanding precision regulation and intelligent battery management.
FAQ
What distinguishes MAX14750BEWA+T from MAX14720BEWA+T in system design?
The MAX14750BEWA+T provides individual hardware enable pins (SWEN, BEN, LEN, HVEN) for direct MCU control of each regulator, whereas the MAX14720BEWA+T uses an integrated sequencer with push-button monitoring. This makes MAX14750BEWA+T ideal for rechargeable systems where the host processor manages power states, while MAX14720BEWA+T suits coin-cell applications needing autonomous on/off behavior. Both share identical regulators and package.
Does MAX14750BEWA+T support battery impedance measurement?
No-battery impedance measurement is exclusive to the MAX14720BEWA+T variant, which includes dedicated BatZUVLO circuitry and SWOUT monitoring logic. The MAX14750BEWA+T lacks the required internal current source and SAR ADC calibration for impedance calculation. Engineers requiring this feature must select MAX14720BEWA+T or add external circuitry.
What is the maximum continuous output current for each regulator in MAX14750BEWA+T?
The MAX14750BEWA+T supports 200mA from its load switch (SWOUT), 250mA from its buck regulator (BOUT), 100mA from its LDO (LOUT), and 250mW (≈50mA at 5V) from its buck-boost regulator (HVOUT). Current limits are enforced by internal foldback and thermal shutdown-no external current-sense resistors are needed.
Can MAX14750BEWA+T operate with a 1.2V input supply?
No-MAX14750BEWA+T requires minimum 1.8V on BIN, HVIN, and SWIN pins per Absolute Maximum Ratings. While the LDO can accept 1.2V in switch mode (RON = 3Ω), the buck and buck-boost regulators will not start or regulate below 1.8V input. For sub-1.8V battery systems, a pre-boost stage is required before MAX14750BEWA+T.
How does the burst-mode operation improve efficiency in MAX14750BEWA+T?
Burst mode reduces switching frequency under light loads, cutting gate-drive and core losses. In MAX14750BEWA+T, this achieves 1.1µA quiescent current for the buck-boost and 0.9µA for the buck regulator-enabling multi-month standby in wearables. Burst mode activates automatically below ~10% load and resumes PWM above that threshold without user intervention.
MAX14750BEWA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 25-WFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) (1), Step-Down/Step-Up (Buck/Boost) (1), Linear (LDO) (1)
- Number of Outputs:
- 3
- Frequency - Switching:
- 2MHz
- Voltage/Current - Output 1:
- 2.5V ~ 5V, PROG
- Voltage/Current - Output 2:
- 1V ~ 2V, 250mA
- Voltage/Current - Output 3:
- 0.9V ~ 4V, 100mA
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 25-WLP (2.11x2.23)
MAX14750BEWA+T FAQ
1.How can I place an order for MAX14750BEWA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14750BEWA+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 MAX14750BEWA+T reliable?
The price and inventory of MAX14750BEWA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14750BEWA+T is usually 5 days.
3.What payment methods are accepted for MAX14750BEWA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14750BEWA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14750BEWA+T?
MAX14750BEWA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14750BEWA+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 MAX14750BEWA+T?
For technical support, including MAX14750BEWA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14750BEWA+T requirements.
6.How does Aetrix verify that MAX14750BEWA+T is sourced from the original manufacturer or authorized distributors?
All MAX14750BEWA+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 MAX14750BEWA+T meets industry standards.
7.What is the process for return or replacement of MAX14750BEWA+T?
All MAX14750BEWA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14750BEWA+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 MAX14750BEWA+T part is unused and in its original packaging.
Return procedure for MAX14750BEWA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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