TPS3511D


       SLVS312A – JULY 2000 – REVISED DECEMBER 2002 D Overvoltage Protection and Lockout for D D D D D D D D D D OR P PACKAGE (TOP VIEW) 12 V, 5 V, 3.3 V Undervoltage Protection and Lockout 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 Power Good Delay; 300-ms TPS3510, 150-ms TPS3511 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-µs Width Noise Deglitches Wide Supply Voltage Range From 4 V to 15 V PGI GND FPO PSON 1 8 2 7 3 6 4 5 PGO VDD VS5 VS33 description The TPS3510/1 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. Overvoltage protection (OVP) monitors 3.3 V, 5 V, and 12 V (12-V signal detects via VDD pin). Undervoltage 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 low and FPO is latched high. PSON from low to high resets the protection latch. UVP function is enabled 75 ms after PSON is set low and debounced. Furthermore, there is a 2.3-ms delay (and an additional 38-ms debounce) at turnoff. There is no delay during turnon. Power good feature monitors PGI, 3.3 V and 5 V and issues a power good signal when the output is ready. The TPS3510/1 is characterized for operation from –40°C to 85°C. typical application 5 VSB PGI PGO 12 V PSON (From Motherboard) 1 8 PGO PGI 2 7 VDD GND 3 6 VS5 FPO 4 5 PSON VS33 0.5 V Drop VSB 5V 3.3 V Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright  2002, Texas Instruments Incorporated 
 
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       SLVS312A – JULY 2000 – REVISED DECEMBER 2002 FUNCTION TABLE PGI PSON UV CONDITION (3.3 V OR 5 V)