TI LM3880MF-1AE/NOPB

The LM3880 Simple Power Sequencer provides the simplest method for controlling the power-up and power-down sequencing of multiple independent voltage rails. By staggering the startup sequence, latch-up conditions or large inrush currents that could affect system reliability can be avoided. This simple sequencer comes in a 6-pin SOT-23-6 package and includes a precision enable pin and three open-drain output flags. The open-drain output flags allow them to be pulled up to a voltage supply different from the sequencer's VDD (as long as they do not exceed the recommended maximum voltage, which is 0.3V above VDD), enabling connection to ICs that require different enable level signals. When the LM3880 is enabled, the three output flags are released sequentially after individual delay times, allowing the connected power supplies to start up. During power-down, the output flags follow the reverse sequence to avoid latch-up conditions. The EPROM feature allows each delay and sequence to be fully adjustable.

• Automotive-grade compliant
• Simple solution for sequencing 3 voltage rails via a single input signal
• Easy cascading of up to 3 devices for sequencing up to 9 voltage rails
• Power-up and power-down control
• Compact 2.9mm × 1.9mm package
• 25μA low quiescent current
• Input voltage range: 2.7V to 5.5V
• Standard timing options available

• Advanced Driver Assistance Systems (ADAS)
• Automotive camera modules
• Security cameras
• Servers
• Networking products
• FPGA power sequencing control
• Microprocessor and microcontroller sequencing control
• Multi-rail power sequencing control