The TPS25942, TPS25944 eFuse Power MUX is a compact, feature rich power management device with a full suite of protection functions. The wide operating range allows control of many popular DC bus voltages. Integrated back-to-back FETs provide bidirectional current control making the device well suited for power muxing and systems with multiple power sources.
●Load, source and device protection are provided with many programmable features. Thresholds for undervoltage, overvoltage, overcurrent, dVo/dt ramp rate, power good, and in-rush current protection are all programmable to suit specific system requirements. For system status monitoring and downstream load control, the device provides PGOOD, FLT and precise current monitor output.
●The TPS25942, TPS25944 monitor V(IN) and V(OUT) to provide true reverse blocking from output when V(IN) < (V(OUT) – 10 mV). The device can be configured to assign Main/Auxiliary supply priority using the FLT and DMODE pins.
● 2.7 V to 18 V Operating Voltage, 20 V (Maximum)
● 42-mΩ RON (Typical)
● 0.6 A to 5.3 A Adjustable Current Limit (±8%)
● IMON Current Indicator Output (±8%)
● 200-µA Operating IQ (Typical)
● 15-µA Disabled IQ (Typical)
● ±2% Overvoltage, Undervoltage Thresholds
● Reverse Current Blocking
● 1-µs Reverse Voltage Shutoff
● Programmable dVo/dt Control
● Power Good and Fault Outputs
● Two Overcurrent Fault Response Options
● TPS25942: I(LIMIT) with Thermal Shutdown
● TPS25944: 4 ms Fault Timer then Shutoff
● –40°C to +125°C Junction Temperature Range
● UL 2367 Recognized
● File No. 169910
● RILIM ≥ 20 kΩ (4.81 A Maximum)
● UL60950 Safe during Single Point Failure
● Open-Short ILIM detection
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