MAX8855ETJ+T

The MAX8855ETJ+T is a Maxim Integrated power-management IC intended for portable applications. It is a high-efficiency switching regulator with integrated MOSFETs that converts a source voltage to a stable output voltage, suitable for battery-powered devices. Key features typically include adjustable output via external resistors, enable/shutdown control, soft-start, and protection functions (overcurrent/short-circuit protection, overtemperature, undervoltage lockout). The ETJ suffix refers to a lead-free package and pinout, while +T indicates tape-and-reel packaging for automated assembly. Typical uses are in handheld devices, embedded systems, and other applications requiring efficient voltage conversion with minimal external components. For exact electrical specs (input range, output voltage range, switching frequency, current capability) and recommended external components, consult the MAX8855 datasheet and Maxim’s design resources.

- Pin count: 28 pins (28‑pin package, ETJ code).
- Function: Multi-output DC-DC buck regulator / power‑management IC for portable devices (high‑efficiency step-down regulator providing multiple rails). The “+T” denotes tape-and-reel packaging.

Manufacturer: Maxim Integrated (now part of Analog Devices).
What kind of company: A semiconductor company that designs and manufactures analog and mixed-signal integrated circuits.

Application areas of MAX8855ETJ+T:
- Portable consumer electronics: mobile phones, PDAs, MP3 players, digital cameras, GPS.
- Battery charging and power regulation in USB/AC adapters and portable chargers.
- Wireless modules and sensor nodes needing efficient DC-DC conversion.
- Automotive and industrial battery-powered instrumentation and embedded systems.

MAX8855ETJ+T is in a 28-pin QFN package (typically 4x4 mm) with an exposed pad; +T denotes tape-and-reel packaging.