Overview
The LM3525M-L/NOPB, produced by Texas Instruments, is a single-port USB power switch and over-current protection device. It is designed to meet the Universal Serial Bus (USB) standards, specifically compatible with USB 1.1 and USB 2.0. This device is ideal for applications in notebook PCs, handheld PCs, and other self-powered USB hubs. The LM3525M-L/NOPB features a wide input voltage range of 2.7V to 5.5V, making it versatile for various power supply requirements.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| Supply Voltage Range | 2.7 | 5.5 | V | |
| Operating Ambient Range | -40 | 85 | °C | |
| Operating Junction Temperature Range | -40 | 125 | °C | |
| Storage Temperature Range | -65 | 150 | °C | |
| Switch Resistance (RON) | 80 | 120 | mΩ (at VIN = 5V) | |
| Continuous Output Current | 0.5 | A | ||
| Short Circuit Output Current | 0.5 | 1.0 | 1.5 | A |
| Standby Current | 1 | µA | ||
| Operating Current | 100 | µA | ||
| Over-current Threshold | 2.25 | 3.2 | A | |
| Thermal Shutdown Threshold | 135 | °C |
Key Features
- Compatible with USB 1.1 and USB 2.0 standards
- Wide input voltage range: 2.7V to 5.5V
- Low switch resistance: ≤ 120 mΩ at VIN = 5V
- Minimum continuous load current: 500 mA
- Short circuit output current: up to 1.5 A
- Thermal shutdown protection
- Undervoltage lockout (UVLO)
- 1 ms fault flag delay during hot-plug events to prevent erroneous overcurrent reporting
- Small SOIC-8 package to minimize board space
- UL recognized component
Applications
- Universal Serial Bus (USB) root hubs
- USB monitor hubs
- Self-powered USB hub devices
- High power USB devices requiring inrush limiting
- General purpose high side switch applications
- Notebook and handheld PCs
Q & A
- What is the input voltage range of the LM3525M-L/NOPB?
The input voltage range is 2.7V to 5.5V.
- What is the typical continuous output current of the LM3525M-L/NOPB?
The typical continuous output current is 500 mA.
- What is the switch resistance (RON) of the LM3525M-L/NOPB at VIN = 5V?
The switch resistance (RON) is ≤ 120 mΩ at VIN = 5V.
- Does the LM3525M-L/NOPB have thermal shutdown protection?
- What is the purpose of the undervoltage lockout (UVLO) feature?
The UVLO feature prevents the MOSFET switch from turning on until the input voltage exceeds 1.9V and shuts off the switch if the input voltage drops below 1.8V.
- What is the fault flag delay during hot-plug events?
The fault flag delay is 1 ms during hot-plug events to prevent erroneous overcurrent reporting caused by inrush currents.
- What is the package type of the LM3525M-L/NOPB?
The package type is SOIC-8.
- Is the LM3525M-L/NOPB UL recognized?
- What are some common applications of the LM3525M-L/NOPB?
- What is the operating ambient temperature range of the LM3525M-L/NOPB?
