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
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
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
Power good feature monitors PGI, 5 V and 3.3 V under voltages and issues a power good signal when they are
The TPS5511 is characterized for operation from TJ = –40°C to 125°C junction temperature.
Figure 1. TPS5511 Typical Application
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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