Overview
The LM3880MFX-1AB/NOPB, produced by Texas Instruments (though originally developed by National Semiconductor), is a simple power supply sequencer designed to control the power-up and power-down sequencing of multiple independent voltage rails. This component is particularly useful in avoiding latch conditions or large in-rush currents that can affect system reliability. It is available in a compact 6-pin SOT-23 package, making it ideal for space-constrained applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT-23-6 |
| Pins | 6 |
| Input Voltage Range | 2.7 V to 5.5 V |
| Quiescent Current | 25 µA |
| Operating Temperature Range | -40°C to 125°C |
| Footprint | 2.9-mm x 1.6-mm |
Key Features
- Simple solution for sequencing three voltage rails from a single input signal
- Easily cascade up to three devices to sequence as many as nine voltage rails
- Power-up and power-down control
- Tiny 2.9-mm x 1.6-mm footprint
- Low quiescent current: 25 µA
- Input voltage range: 2.7 V to 5.5 V
- Standard timing options available
- Open-drain output flags can be pulled up to distinct voltage supplies
- EPROM capability allows every delay and sequence to be fully adjustable
Applications
- Advanced driver assistance systems (ADAS)
- Automotive camera modules
- Security cameras
- Servers
- Networking elements
- FPGA power supply sequencing
- Microprocessor and microcontroller sequencing
- Multiple supply sequencing
Q & A
- What is the primary function of the LM3880MFX-1AB/NOPB? The primary function is to control the power-up and power-down sequencing of multiple independent voltage rails.
- In what package is the LM3880MFX-1AB/NOPB available? It is available in a 6-pin SOT-23 package.
- What is the input voltage range of the LM3880MFX-1AB/NOPB? The input voltage range is 2.7 V to 5.5 V.
- What is the quiescent current of the LM3880MFX-1AB/NOPB? The quiescent current is 25 µA.
- Can the LM3880MFX-1AB/NOPB be cascaded? Yes, it can be cascaded up to three devices to sequence as many as nine voltage rails.
- What is the operating temperature range of the LM3880MFX-1AB/NOPB? The operating temperature range is -40°C to 125°C.
- How does the LM3880MFX-1AB/NOPB avoid latch conditions during power-down? The output flags follow a reverse sequence during power-down to avoid latch conditions.
- Can the timing delays and sequences be adjusted? Yes, the EPROM capability allows every delay and sequence to be fully adjustable.
- What types of applications is the LM3880MFX-1AB/NOPB suitable for? It is suitable for applications such as ADAS, automotive camera modules, security cameras, servers, networking elements, FPGA power supply sequencing, and more.
- How small is the footprint of the LM3880MFX-1AB/NOPB? The footprint is 2.9-mm x 1.6-mm.
