TEC driver, not a generic DC-DC module
The MAX1969EUI+ is a dedicated thermoelectric cooler (TEC) driver IC from Analog Devices, not a general-purpose DC-DC converter module. It is designed to drive a Peltier element for precise temperature control in laser diode modules, optical transceivers, and medical diagnostic equipment where sub-degree thermal stability is required.
Package and thermal interface
The 28-TSSOP package with an exposed pad (28-TSSOP-EP) is the key thermal and electrical interface. The 0.173-inch body width (4.40 mm) is standard for TSSOP-28, so existing footprints for the MAX1968 or MAX1978 family are a direct layout match. Supplied in tube packaging, not tape-and-reel — a detail that matters for pick-and-place setup if your assembly house expects reeled parts. The tube quantity is typically 50 or 74 units per tube depending on the supplier's packing standard; confirm the tube count at RFQ to avoid a line-stop.
It is ROHS3 compliant, so it passes EU RoHS directives without exemption declarations. For new designs, this part is a safe BOM choice; no near-term obsolescence risk.