Overview
The LM3881MM/NOPB, produced by Texas Instruments, is a Simple Power Sequencer designed to control the power-up and power-down sequences of multiple power supplies. This device is particularly useful in avoiding latch conditions and large inrush currents that can affect system reliability. It features a tiny footprint, available in an 8-pin VSSOP package, making it suitable for a variety of applications where space is limited.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 5.5 | V |
| Quiescent Current (Typical) | 80 | µA |
| Number of Supplies Monitored | 3 | - |
| Number of Sequenced Outputs | 3 | - |
| Output Type | Active High/Open Drain | - |
| Package Type | VSSOP-8 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Timing Control | External Capacitor | - |
Key Features
- Easiest method to sequence rails for multiple power supplies (switching or linear regulators)
- Power-up and power-down control to avoid latch conditions and large inrush currents
- Tiny footprint in an 8-pin VSSOP package
- Low quiescent current of 80 µA
- Input voltage range of 2.7 V to 5.5 V
- Output invert feature for active high or active low logic modes
- Timing controlled by a small value external capacitor
Applications
- Security Cameras
- Servers
- Networking Elements
- FPGA Sequencing
- Microprocessor and Microcontroller Sequencing
- Multiple Supply Sequencing
Q & A
- What is the primary function of the LM3881MM/NOPB?
The primary function is to sequence the power-up and power-down of multiple power supplies to avoid latch conditions and large inrush currents.
- What is the input voltage range for the LM3881MM/NOPB?
The input voltage range is from 2.7 V to 5.5 V.
- How many power supplies can the LM3881MM/NOPB sequence?
The device can sequence up to three power supplies.
- What type of package is the LM3881MM/NOPB available in?
The device is available in an 8-pin VSSOP package.
- How is the timing controlled for the power sequencing?
The timing is controlled using a small value external capacitor.
- Can the output flags be inverted?
- What is the typical quiescent current of the LM3881MM/NOPB?
The typical quiescent current is 80 µA.
- What are some common applications for the LM3881MM/NOPB?
Common applications include security cameras, servers, networking elements, FPGA sequencing, and microprocessor/microcontroller sequencing.
- What is the operating temperature range for the LM3881MM/NOPB?
The operating temperature range is from -40°C to 125°C.
- Is the LM3881MM/NOPB RoHS compliant?
