Analog Devices Inc./Maxim Integrated MAX14750CEWA+T

Overview

MAX14750CEWA+T from Analog Devices is a highly integrated, ultra-low-quiescent-current power-management IC designed as a companion PMIC in rechargeable battery systems. It integrates a 250mW buck-boost regulator (2.5V–5V output), a 200mA synchronous buck regulator (1.0V–2.0V), a 100mA programmable LDO (0.9V–4.0V), and a 200mA load switch with battery monitoring - all operating from 1.8V–5.5V input and delivering micro-IQ performance down to 0.9µA for wearable medical devices.

For engineers reviewing the MAX14750CEWA+T datasheet, MAX14750CEWA+T pinout, MAX14750CEWA+T application, or MAX14750CEWA+T equivalent, this page delivers verified functional partitioning, I²C-controlled sequencing, battery impedance measurement capability, and WLP package-level thermal and electrical specifications required for space-constrained, battery-life-critical designs.

Technical Context

The MAX14750CEWA+T implements independent enable control per function (SWEN, BEN, LEN, HVEN), eliminating sequencer dependency and enabling custom power-up/down timing via external logic or host MCU. Its buck-boost and buck regulators operate in burst mode at light loads, achieving 1.1µA and 0.9µA quiescent current respectively, while maintaining ±3% output accuracy across temperature and load.

Battery monitoring is implemented via a dedicated SWOUT path with programmable current sourcing (250µA–8mA) and high-impedance VCC divider (1.5MΩ), supporting differential impedance measurement with ±22mV worst-case accuracy. The integrated monitor multiplexer (MON) routes SWIN, HVIN, BIN, LIN, LOUT, BOUT, and HVOUT for centralized voltage supervision.

Key Specifications

Pinout & Package

MAX14750CEWA+T uses a 25-bump wafer-level package (WLP), 2.26mm × 2.14mm, 0.4mm pitch, with exposed die attach pad for thermal management. Pin assignment follows JEDEC-standard bump layout with five rows (A–E) and five columns (1–5).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-rail power management applications.

Compared with MAX14720CEWA+T, the MAX14750CEWA+T trades sequencer automation for granular external control - enabling deterministic power sequencing in host-managed systems. Against TPS65218D0RSLR, it sacrifices output current headroom to achieve 6× smaller footprint and 10× lower quiescent current, making it optimal for sub-20mm² wearables.

Availability

MAX14750CEWA+T is available at Aetrix Electronics and suitable for wearable medical devices, portable diagnostic instruments, smart hearing aids, and implantable sensor nodes requiring stable component supply across long-lifecycle production programs.

Supply support for MAX14750CEWA+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 MAX14750CEWA+T belongs to the MAX147xx family of ultra-low-power, multi-rail PMICs engineered specifically for battery-operated medical and fitness wearables where size, efficiency, and battery longevity are non-negotiable.

FAQ

What is the primary functional distinction between MAX14750CEWA+T and MAX14720CEWA+T?

The MAX14750CEWA+T provides individual hardware enable inputs (HVEN, BEN, LEN, SWEN) for discrete control of each regulator and switch, whereas the MAX14720CEWA+T relies on an integrated sequencer and push-button controller. This makes MAX14750CEWA+T ideal for host-MCU-driven power management, while MAX14720CEWA+T targets autonomous, button-initiated systems. Both share identical regulator specs and WLP packaging.

Does MAX14750CEWA+T support battery impedance measurement like MAX14720CEWA+T?

No - battery impedance measurement is exclusive to the MAX14720CEWA+T and requires BatZUVLO enabled. The MAX14750CEWA+T omits this circuitry to reduce complexity and cost for applications where battery health monitoring is handled externally. Its SWOUT pin remains functional as a general-purpose load switch output but lacks programmable current sourcing for impedance sweeps.

What is the maximum continuous output current capability of the buck-boost regulator in MAX14750CEWA+T?

The buck-boost regulator in MAX14750CEWA+T delivers up to 250mW of continuous output power - not a fixed current value. At 2.5V output, this corresponds to 100mA; at 5.0V, it corresponds to 50mA. The actual current depends on input voltage, output voltage, and thermal conditions. The device enforces current limiting via pulse-mode switching ratio (TRATIO) and short-circuit protection (0.4–1.9A peak).

Can MAX14750CEWA+T operate with a 1.2V input supply?

No - the minimum input voltage for all regulators and the power switch in MAX14750CEWA+T is 1.8V. While the LDO can operate in switch mode down to 1.2V input, that mode disables regulation and functions only as a pass-through switch with 1Ω–3Ω R_ON. For true regulated output, VIN must be ≥1.8V across HVIN, BIN, SWIN, and VLIN pins.

Is the 25-bump WLP package of MAX14750CEWA+T compatible with standard reflow profiles?

Yes - the MAX14750CEWA+T WLP is qualified for lead-free reflow soldering at peak temperatures up to +260°C (per JEDEC J-STD-020). Its thermal resistance (θ_JA = 52.43°C/W on four-layer board) and 0.4mm pitch require precise stencil design and placement accuracy, but it is fully compatible with automated SMT lines using IPC-A-610 Class 2/3 processes.