AAT4644 Datasheet | Skyworks Solutions

General Description The AAT4644 is a four-channel resettable fuse. It utilizes independent current-limited and thermally-protected P-channel MOSFETs to protect against short circuits. Current limit is factory programmed at 1A. Additional protection is provided with under-voltage lockout. The switches are turned off when the input voltage drops below a preset level. The quiescent supply current is typically 20μA. The AAT4644 is a flexible solution, allowing system designers to gang outputs together for lower RDS(ON) and higher current limit. The AAT4644 is available in a Pb-free, 8-pin TSSOP or SOP package and is specified over the -40°C to +85°C temperature range. DATA SHEET 4-Channel Current Limited Load Switch Features - 500m A per Channel Steady State - 4 x 1A Current Limit Trip Point - Over-Temperature Protection - Fast Transient Response: - 1μs (Typ) Response to Short Circuit - 100m Typical RDS(ON) - Under-Voltage Lockout - Temperature Range:...