LP7510 TPS3510 PC POWER SUPPLY SUPERVISORS SLVS312 JULY 2000 Over Voltage Protection and Lock Out for D OR P PACKAGE 12V,5V,3.3V (TOP VIEW) Under Voltage Protection and Lock Out for 5 V and 3.3 V Fault Protection Output With Open-Drain Output Stage Open-Drain Power Good Output Signal for Power Good Input, 3.3 V and 5 V 300-ms Power Good Delay 75-ms Delay for 5-V and 3.3-V Power Supply Short-Circuit Turnon Protection 2.3-ms PSON Control to FPO Turnoff Delay 38-ms PSON Control Debounce 73-us Width Noise Deglitches Wide Supply Voltage Range From 4 V to 15V description The TPS3510 is designed to minimize external components of personal-computer switching power supply systems. It provides protection circuits, power good indicator, fault protection output (FPO) and PSON control. Over voltage protection (OVP) monitors 3.3 V, 5 V, and 12 V (12-V signal detects via Vpp pin). Under voltage protection (UVP) monitors 3.3 V and 5 V. When an OV or UV condition is detected, the power good output (PGO) is set to