MAX77812EWB+T

MAX77812EWB+T is Maxim Integrated’s single-chip power-management IC (PMIC) for portable devices. The EWB suffix indicates the specific WQFN package; +T means tape-and-reel packaging. It combines key PMIC functions in one device: a buck/boost regulator to generate system voltage, Li‑ion battery charging and safety logic, and power-path management to charge the battery while powering the system. It is designed for battery-powered devices (smartphones, wearables, IoT, etc.) and is typically controlled/configured via an I2C interface with status/ Fault indicators and support for sequencing and protection features (overvoltage, overcurrent, thermal). For exact pinout, electrical specs, programming registers, and reference designs, consult the MAX77812 datasheet and application notes, as well as any evaluation boards.

Concise features of MAX77812EWB+T (evaluation board for MAX77812 PMIC):
- All-in-one PMIC for wearables/portable devices with battery charging and multiple regulators
- Power-path management: seamless power from Li‑ion battery or USB
- Buck-boost regulator for a main system rail with high efficiency across load range
- Boost regulator for display/LED backlight or other high‑voltage rails
- Multiple regulated outputs (VCORE, VDD, I/O rails) programmable via registers
- Integrated Li‑ion/Li‑Po battery charger with protections (timers, pre-charge, termination)
- I2C (and/or SPI) programmable control and monitoring with status/fault reporting
- Dynamic voltage scaling and soft-start sequencing for safe ramping
- Protection suite: UVLO, OVP, OCP, short-circuit protection, thermal monitoring
- Monitoring and diagnostics: battery voltage, temperature, current/power monitoring
- Low quiescent current in sleep modes with fast transient response
- Evaluation-board features: test headers, jumpers, measurement points for easy characterization
Note: Specific current ratings and voltage rails are configurable via the on-board programming and register settings.

Package: 16‑pin TDFN, 3.0 mm × 3.0 mm. The +T suffix indicates Tape‑and‑Reel packaging.

MAX77812EWB+T is a 28-pin package (28-pin WQFN). It is a power-management IC (PMIC) featuring dual buck-boost DC-DC regulators with multiple LDOs to generate and regulate system Rails for portable/battery-powered devices.

Manufacturer: Maxim Integrated Products (now part of Analog Devices, Inc.).
What kind of company: A multinational semiconductor company that designs and sells analog and mixed-signal integrated circuits. It is traditionally fabless, outsourcing fabrication to foundries.

MAX77812EWB+T is a PMIC evaluation board for portable, battery-powered applications. Typical use areas:
- High-efficiency DC-DC conversion and power-path management for mobile devices
- Wearables and IoT sensors
- Medical devices and personal health monitors
- USB charging and battery-management systems
- Development and testing of PMIC designs in consumer, industrial, and automotive-related handheld electronics

There isn’t an exact 1:1 drop-in cross for MAX77812EWB+T. It’s a wearable single‑cell Li‑ion PMIC with charging, protection, and power-path. Closest equivalents by function:
- TI: BQ24075, BQ24090 (USB Li‑ion charger with power-path)
- TI: BQ25100 / BQ25120 (wearable PMICs)
- Analog Devices: ADP5060, ADP5063
- Microchip: MCP73831, MCP73832 (single‑cell Li‑ion chargers)
Check exact features (charge current, power-path behavior, packaging) before replacing.