Overview
The Texas Instruments LM3880MF-1AA/NOPB is a 3-rail simple power sequencer designed to manage the power-up and power-down sequencing of multiple independent voltage rails. This component is particularly useful in systems where controlled startup and shutdown of power supplies are critical to avoid latch conditions or large in-rush currents. The LM3880MF-1AA/NOPB operates within an input voltage range of 2.7V to 5.5V and features a low quiescent current of 25 µA, making it energy-efficient. It is available in a compact 6-pin SOT-23 package, measuring 2.9 mm x 1.6 mm, and is RoHS compliant.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LM3880MF-1AA/NOPB |
| Package | SOT-23-6 |
| Input Voltage Range | 2.7 V to 5.5 V |
| Quiescent Current (Iq) | 25 µA |
| Number of Sequenced Outputs | 3 |
| Operating Temperature Range | -40°C to 125°C |
| Time Delay Options | 2, 10, 16, 30, 60, 120 ms |
| Package Size | 2.9 mm x 1.6 mm |
| RoHS Compliance | Yes |
Key Features
- Simple Power Sequencing: Sequences up to three voltage rails from a single input signal, with the ability to cascade up to three devices to sequence as many as nine voltage rails.
- Low Quiescent Current: Operates with a low quiescent current of 25 µA, making it energy-efficient.
- Compact Package: Available in a tiny 6-pin SOT-23 package, measuring 2.9 mm x 1.6 mm.
- Adjustable Time Delays: Offers standard timing options with adjustable time delays using external capacitors.
- Open-Drain Output Flags: Permits the output flags to be pulled up to distinct voltage supplies, allowing interface with ICs requiring different enable signals.
- Precision Enable Pin: Features an internal comparator referenced to a bandgap voltage (1.25 V) for precise threshold detection.
Applications
- Advanced Driver Assistance Systems (ADAS): Used in ADAS systems for controlled power sequencing.
- Automotive Camera Modules: Employed in automotive camera modules for reliable power management.
- Security Cameras: Utilized in security cameras to ensure proper power sequencing.
- Servers and Networking Elements: Applied in server and networking equipment for efficient power supply sequencing.
- FPGA Power Supply Sequencing: Used in FPGA power supply designs to manage multiple voltage rails.
- Microprocessor and Microcontroller Sequencing: Used in microprocessor and microcontroller systems for controlled power-up and power-down sequencing).
Q & A
- What is the input voltage range of the LM3880MF-1AA/NOPB?
The input voltage range is 2.7 V to 5.5 V).
- What is the quiescent current of the LM3880MF-1AA/NOPB?
The quiescent current is 25 µA).
- How many voltage rails can the LM3880MF-1AA/NOPB sequence?
It can sequence up to three voltage rails, and up to nine rails when cascaded with additional devices).
- What is the operating temperature range of the LM3880MF-1AA/NOPB?
The operating temperature range is -40°C to 125°C).
- Is the LM3880MF-1AA/NOPB RoHS compliant?
Yes, it is RoHS compliant).
- What package type is the LM3880MF-1AA/NOPB available in?
It is available in a 6-pin SOT-23 package).
- Can the time delays of the LM3880MF-1AA/NOPB be adjusted?
Yes, the time delays can be adjusted using external capacitors).
- What are some common applications of the LM3880MF-1AA/NOPB?
Common applications include ADAS, automotive camera modules, security cameras, servers, and FPGA power supply sequencing).
- How does the LM3880MF-1AA/NOPB manage power-up and power-down sequencing?
The device manages sequencing through the assertion of the enable signal and the use of open-drain output flags, ensuring a controlled startup and shutdown of power supplies).
- Is the LM3880MF-1AA/NOPB suitable for new designs?
Yes, it is recommended for new designs and is listed as active by Texas Instruments).
