Overview
The Texas Instruments LM3880MF-1AA/NOPB is a simple power sequencer designed to control the power-up and power-down sequencing of multiple independent voltage rails. This component is particularly useful in systems where controlled startup and shutdown sequences are crucial to avoid latch conditions or large in-rush currents. The LM3880MF-1AA/NOPB is part of the LM3880 series and is available in a compact 6-pin SOT-23 package, making it suitable for a wide range of applications where space is limited.
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 |
| Operating Temperature Range | -40°C to 125°C |
| Quiescent Current (Iq) | 25 µA (typical) |
| Number of Sequenced Outputs | 3 |
| Time Delay Options | 2, 10, 16, 30, 60, 120 ms |
| Package Size | 2.9 mm x 1.6 mm |
Key Features
- Simple Power Sequencing: The LM3880MF-1AA/NOPB provides a straightforward solution for sequencing three voltage rails from a single input signal.
- Cascading Capability: Up to three devices can be cascaded to sequence as many as nine voltage rails.
- Low Quiescent Current: The device operates with a low quiescent current of 25 µA, making it energy-efficient.
- Flexible Timing Options: Standard timing options are available, and custom timing can be achieved using external capacitors.
- Open-Drain Output Flags: The three open-drain output flags can be pulled up to different voltage supplies, allowing for flexibility in interfacing with various ICs.
- Precision Enable Pin: The enable pin features an internal comparator with a precision threshold, ensuring reliable and controlled sequencing.
Applications
- Advanced Driver Assistance Systems (ADAS): Used in automotive systems for controlled power sequencing.
- Automotive Camera Modules: Ensures proper startup and shutdown sequences in camera modules.
- Security Cameras: Provides reliable power sequencing for security camera systems.
- Servers and Networking Elements: Used in data centers and networking equipment for controlled power management.
- FPGA Power Supply Sequencing: Essential for sequencing multiple voltage rails in Field-Programmable Gate Arrays (FPGAs).
- Microprocessor and Microcontroller Sequencing: Used in various microprocessor and microcontroller-based systems to manage power sequencing.
Q & A
- What is the primary function of the LM3880MF-1AA/NOPB?
The primary function is to control the power-up and power-down sequencing of multiple independent voltage rails.
- What package type is the LM3880MF-1AA/NOPB available in?
The component is available in a 6-pin SOT-23 package.
- What is the input voltage range for the LM3880MF-1AA/NOPB?
The input voltage range is from 2.7 V to 5.5 V.
- How many sequenced outputs does the LM3880MF-1AA/NOPB have?
The device has three sequenced outputs.
- What are the available time delay options for the LM3880MF-1AA/NOPB?
The available time delay options are 2, 10, 16, 30, 60, and 120 ms.
- Can the LM3880MF-1AA/NOPB be cascaded to sequence more voltage rails?
Yes, up to three devices can be cascaded to sequence as many as nine voltage rails.
- What is the quiescent current of the LM3880MF-1AA/NOPB?
The quiescent current is 25 µA (typical).
- What is the operating temperature range of the LM3880MF-1AA/NOPB?
The operating temperature range is from -40°C to 125°C.
- How can the timing of the LM3880MF-1AA/NOPB be customized?
The timing can be customized using external capacitors connected to the enable pin.
- What types of applications is the LM3880MF-1AA/NOPB commonly used in?
It is commonly used in ADAS, automotive camera modules, security cameras, servers, networking elements, FPGA power supply sequencing, and microprocessor/microcontroller sequencing.
