Overview
The LM3880MFE-1AA/NOPB, produced by Texas Instruments (formerly National Semiconductor), is a simple power supply sequencer designed to control the power-up and power-down sequence of multiple power supplies. This component is particularly useful in applications where sequential startup and shutdown of voltage rails are crucial to avoid latch conditions or large in-rush currents that could compromise system reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 5.5 | V |
| Quiescent Current | 25 | µA |
| Package Type | SOT-23 (6-pin) | |
| Body Size | 2.9 mm x 1.6 mm | |
| Junction Temperature Range | -40 to 125 | °C |
| Thermal Resistance (Junction-to-Ambient) | 187.6 | °C/W |
| Timing Delay | Programmable (e.g., 30 ms) | |
| Output Flags | Three open-drain outputs | |
| Enable Pin | Precision enable with internal comparator |
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 with programmable timing delays
- Low quiescent current of 25 µA
- Tiny footprint in a 6-pin SOT-23 package
- Three open-drain output flags that can be pulled up to distinct voltage supplies
- EPROM capability for custom timing and sequence configurations
Applications
- Advanced driver assistance systems (ADAS)
- Automotive camera modules
- Security cameras
- Servers and networking elements
- FPGA power supply sequencing
- Microprocessor and microcontroller sequencing
- Multiple supply sequencing in various electronic systems
Q & A
- What is the primary function of the LM3880MFE-1AA/NOPB?
The primary function is to control the power-up and power-down sequence of multiple power supplies to avoid latch conditions or large in-rush currents.
- What is the input voltage range for the LM3880MFE-1AA/NOPB?
The input voltage range is from 2.7 V to 5.5 V.
- What is the quiescent current of the LM3880MFE-1AA/NOPB?
The quiescent current is 25 µA.
- What package type is the LM3880MFE-1AA/NOPB available in?
It is available in a 6-pin SOT-23 package.
- Can the timing delays be customized?
- What are the typical applications of the LM3880MFE-1AA/NOPB?
Typical applications include ADAS, automotive camera modules, security cameras, servers, networking elements, FPGA power supply sequencing, and microprocessor/microcontroller sequencing.
- How many output flags does the LM3880MFE-1AA/NOPB have?
It has three open-drain output flags.
- What is the junction temperature range for the LM3880MFE-1AA/NOPB?
The junction temperature range is from -40°C to 125°C.
- Can multiple LM3880 devices be cascaded?
- What is the thermal resistance (junction-to-ambient) of the LM3880MFE-1AA/NOPB?
The thermal resistance is 187.6 °C/W.
