TPS5511

TPS5511 3-CHANNEL POWER SUPPLY SUPERVISOR D Over Voltage Protection and Lock Out for 5 V, 3.3 V, and 12 V D Fault Protection Output with Open Drain Output Stage D Open Drain Power Good Output Signal for Power Good Input, 5 V and 3.3 V D 300 ms Power Good Delay D 2.3 ms PSON Control to FPO Turn-Off Delay D 38 ms PSON Control Debounce D 73 µs Width Noise Deglitches D Wide Power Supply Voltage Range from 4 V to 15 V SLVS170 – AUGUST 1998 D OR P PACKAGE (TOP VIEW) PGI GND FPO PSON 1 2 3 4 8 PGO 7 VCC 6 VS5 5 VS33 description The TPS5511 is designed to minimize the external components of personal-computer switching power supply systems. It provides protection circuits, power good indicator, fault protection output (FPO), and PSON control. OVP (over voltage protection) monitors 5 V, 3.3 V, and 12 V (12 V OV detects via VCC terminal). When an OV condition is detected, the PGO (power good output) is asserted low and FPO is latched high. PSON from low to high resets the protection latch. There is a 2.3-ms turn-off delay from PSON to FPO. There is no delay during turn on. Power good feature monitors PGI, 5 V and 3.3 V under voltages and issues a power good signal when they are ready. The TPS5511 is characterized for operation from TJ = –40°C to 125°C junction temperature. 5 VSB PGI PSON TPS5511 1 PGI 8 PGO 2 GND 3 FPO 7 VCC 6 VS5 4 PSON 5 VS33 0.5 V Drop PGO 12 V VSB 5V 3.3 V Figure 1. TPS5511 Typical Application Please be aware that an important notice concerni...