Features

◼ Input Voltage Range: 2.7 V to 5.5V

◼ Power-Up and Power-Down Sequence Control

◼ Single Enable Control Signal Input Channel

◼ Three Power Sequence Channels:

◆ Open-Drain Output

◆ Adjustable Timing Controlled by Capacitor

◆ Support Invert Output

◼ Support Cascaded Device Output

◼ Low Power Consumption

◼ Junction Temperature: –40°C to +125°C

◼ Small MSOP-8 Package

Applications

◼ Video Surveillance

◼ Network Equipment and Servers

◼ Industrial Control

◼ FPGA/ASIC/CPLD Power Sequence Control

◼ Multi-channel Power Supply Sequence Control

Description

The TPK1031 series products are simple power sequencers,

which provide power-up and power-down sequence control of

multi-channel power supplies. Furthermore, the TPK1031 series

support maximum three devices cascaded to control sequence

of nine-channel power rails in one system.

The TPK1031 series products have three open-drain output

channels, and all the channels can be pulled up to any required

voltage level equal or lower than VCC. When the TPK1031 series

are enabled with EN pin goes high, the three output channels

toggle with the sequence of FLAG1-FLAG2-FLAG3 after the

delay period individually set by the external capacitor; when the

TPK1031 series are disabled with EN pin goes low, the three

output channels toggle following a reverse sequence after the

delay period individually set by the external capacitor.

The TPK1031 series products provide small MSOP-8 package

with guaranteed junction temperature range (TJ) from –40°C to

+125°C.