Overview
The LM3880MF-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. Available in a compact 6-pin SOT-23 package, it offers a tiny footprint of 2.9-mm x 1.6-mm, making it ideal for space-constrained applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range (VCC) | 2.7 | - | 5.5 | V |
| Operating Temperature Range | -40 | - | 125 | °C |
| Quiescent Current (IQ) | 25 | 80 | - | µA |
| Number of Sequenced Outputs | - | - | 3 | - |
| Time Delay Options | - | - | 2, 10, 16, 30, 60, 120 ms | - |
| Package Type | - | - | SOT-23 (DBV) | - |
| Package Size | - | - | 2.9 mm x 1.6 mm | - |
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 external capacitors or resistors.
- Low quiescent current of 25 µA.
- Three open-drain output flags that can be pulled up to distinct voltage supplies.
- EPROM capability for fully adjustable delay and sequence settings.
- Compact 6-pin SOT-23 package with a tiny footprint.
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 LM3880MF-1AE/NOPB?
The primary function is to control the power-up and power-down sequencing of multiple independent voltage rails.
- What is the package type and size of the LM3880MF-1AE/NOPB?
The package type is SOT-23 (DBV) with a size of 2.9 mm x 1.6 mm.
- What is the operating temperature range of the LM3880MF-1AE/NOPB?
The operating temperature range is -40°C to 125°C.
- How many voltage rails can be sequenced using the LM3880MF-1AE/NOPB?
It can sequence up to three voltage rails, and up to nine rails when cascaded with other devices.
- What are the time delay options available for the LM3880MF-1AE/NOPB?
The time delay options are 2, 10, 16, 30, 60, and 120 ms.
- How is the timing sequence controlled in the LM3880MF-1AE/NOPB?
The timing sequence is controlled by the enable (EN) pin, which can be delayed using an external capacitor or resistor.
- What is the quiescent current of the LM3880MF-1AE/NOPB?
The quiescent current is typically 25 µA.
- Can the output flags be pulled up to different voltage supplies?
Yes, the three open-drain output flags can be pulled up to distinct voltage supplies, provided they do not exceed VCC + 0.3 V.
- What are some common applications of the LM3880MF-1AE/NOPB?
Common applications include ADAS, automotive camera modules, security cameras, servers, networking elements, FPGA power supply sequencing, and microprocessor/microcontroller sequencing.
- Is the LM3880MF-1AE/NOPB RoHS compliant?
Yes, the device is RoHS compliant.
