Overview
The LM3880QMFE-1AE/NOPB is a simple power supply sequencer designed by Texas Instruments. This component is part of the LM3880 family and is specifically tailored for applications requiring precise power-up and power-down sequencing of multiple voltage rails. It is available in a compact 6-pin SOT-23 package, making it suitable for space-constrained designs. The LM3880QMFE-1AE/NOPB is designed to avoid latch conditions and large in-rush currents, thereby enhancing the reliability of the system.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOT-23 DBV | |
| Package Size | 2.90 mm × 1.60 mm | |
| Input Voltage Range | 2.7 V to 5.5 V | V |
| Quiescent Current | 25 µA | A |
| Junction Temperature Range | -40°C to 125°C | °C |
| Enable Pin Threshold | 1.25 V (bandgap voltage) | V |
| Output Flags | Three open-drain outputs | |
| Timing Delay | Adjustable using external capacitor | |
| Thermal Resistance (Junction-to-Ambient) | 187.6 °C/W | °C/W |
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 to avoid latch conditions and large in-rush currents
- Tiny footprint: 2.9-mm x 1.6-mm SOT-23 package
- Low quiescent current: 25 µA
- Adjustable timing delays using external capacitors
- EPROM capability for fully adjustable delays and sequences
- Open-drain output flags can be pulled up to distinct voltage supplies
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 LM3880QMFE-1AE/NOPB?
The primary function is to sequence the power-up and power-down of multiple voltage rails to avoid latch conditions and large in-rush currents.
- What is the package type and size of the LM3880QMFE-1AE/NOPB?
The package type is SOT-23 DBV, and the size is 2.90 mm × 1.60 mm.
- What is the input voltage range for the LM3880QMFE-1AE/NOPB?
The input voltage range is from 2.7 V to 5.5 V.
- How can the timing delays be adjusted in the LM3880QMFE-1AE/NOPB?
The timing delays can be adjusted using external capacitors connected to the enable pin.
- What is the quiescent current of the LM3880QMFE-1AE/NOPB?
The quiescent current is 25 µA.
- Can the LM3880QMFE-1AE/NOPB be cascaded to sequence more than three voltage rails?
- What are the thermal resistance characteristics of the LM3880QMFE-1AE/NOPB?
The junction-to-ambient thermal resistance is 187.6 °C/W.
- What are some common applications of the LM3880QMFE-1AE/NOPB?
Common applications include ADAS, automotive camera modules, security cameras, servers, and FPGA power supply sequencing.
- Is the LM3880QMFE-1AE/NOPB suitable for automotive applications?
- How do the output flags of the LM3880QMFE-1AE/NOPB operate?
The output flags are open-drain and can be pulled up to distinct voltage supplies, allowing for interface with ICs requiring different enable signals.
