Overview
The LM3880MFE-1AE/NOPB, produced by Texas Instruments, is a simple power supply sequencer designed to control the power-up and power-down sequencing of multiple independent voltage rails. This device is particularly useful in avoiding latch conditions and large in-rush currents that can affect system reliability. It is available in a 6-pin SOT-23 package and features a tiny footprint of 2.9-mm x 1.6-mm, making it suitable for space-constrained applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range (VCC to GND) | 2.7 | - | 5.5 | V |
| Quiescent Current (IQ) | 25 | 80 | - | µA |
| Junction Temperature | -40 | - | 125 | °C |
| Enable Input Voltage Range | -0.3 | - | VCC + 0.3 | V |
| Flag Output Voltage Low (VOL) | - | - | 0.4 | V |
| Flag Leakage Current (IFLAG) | - | 1 | 20 | nA |
| Thermal Resistance (RθJA) | - | - | 187.6 | °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 with adjustable timing using EPROM or external capacitors.
- Low quiescent current of 25 µA.
- Tiny 2.9-mm x 1.6-mm footprint in a 6-pin SOT-23 package.
- Open-drain output flags that can be pulled up to distinct voltage supplies separate from the sequencer VDD.
- Precision enable pin with internal comparator referenced to a bandgap voltage (1.25 V).
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-1AE/NOPB?
The primary function is to control the power-up and power-down sequencing of multiple independent voltage rails to avoid latch conditions and large in-rush currents.
- What is the package type and size of the LM3880MFE-1AE/NOPB?
The device is packaged in a 6-pin SOT-23 package with a footprint of 2.9-mm x 1.6-mm.
- What is the input voltage range for the LM3880MFE-1AE/NOPB?
The input voltage range is from 2.7 V to 5.5 V.
- How can the timing sequence be adjusted?
The timing sequence can be adjusted using EPROM or by adding an external capacitor to the enable pin.
- What is the quiescent current of the LM3880MFE-1AE/NOPB?
The quiescent current is 25 µA.
- Can the output flags be pulled up to different voltage supplies?
- What are some common applications of the LM3880MFE-1AE/NOPB?
- How many voltage rails can be sequenced using multiple LM3880 devices?
- What is the junction temperature range for the LM3880MFE-1AE/NOPB?
- How is the enable pin threshold set?
