STHS4257A, STHS4257A1 STHS4257L, STHS4257L1
IEEE 802.
3af PoE Powered Device (PD) interface controller with integrated signature resistor
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Features
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IEEE 802.
3af-compliant interface for Powered Devices (PDs) Integrated 100V, 450mA power
MOSFET low side switch Inrush current limit Normal operation current limit Integrated 25kΩ signature resistor Signature disable (STHS4257A1/L1) Resistor-programmable classification current (Class 0-4) Power Good output, open drain Under
voltage Lockout (UVLO) Thermal overload protection (two-step for the STHS4257A/L) Latch (L) or auto-retry (A) after repetitive thermal overload Industrial temperature range: –40 to...