Overview
The LM2575-5.0BT L3, produced by Micrel Inc. (now part of Microchip Technology), is a monolithic integrated circuit designed for use in step-down (buck) switching regulators. This device is part of the LM2575 series, which offers high-efficiency and simplicity in designing power supply circuits. The LM2575-5.0BT L3 is specifically configured to provide a fixed output voltage of 5.0V, making it suitable for a variety of applications requiring stable and efficient power regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 5.0 | V |
| Output Voltage Tolerance | ±4% | % |
| Output Current | 1 | A |
| Input Voltage Range | 4.75 to 40 | V |
| Oscillator Frequency | 52 kHz | kHz |
| Maximum Junction Temperature | 150 | ℃ |
| Thermal Resistance, Junction to Case | 5.0 | ℃/W |
| Thermal Resistance, Junction to Ambient | 70 | ℃/W |
| ESD Rating (Human Body Model) | 2.0 kV | kV |
Key Features
- Fixed output voltage of 5.0V with ±4% tolerance over line and load conditions.
- Guaranteed 1A output current.
- Wide input voltage range from 4.75V to 40V.
- 52 kHz fixed frequency internal oscillator.
- TTL shutdown capability with low power standby mode.
- High efficiency, reducing the need for large heat sinks.
- Requires only 4 external components for operation.
- Uses readily available standard inductors.
- Thermal shutdown and current limit protection.
Applications
- Simple high-efficiency step-down (buck) regulators.
- Efficient pre-regulators for linear regulators.
- On-card switching regulators.
- Positive to negative converters (buck-boost).
- Negative step-up converters.
- Power supplies for battery chargers.
Q & A
- What is the output voltage of the LM2575-5.0BT L3?
The output voltage of the LM2575-5.0BT L3 is 5.0V with a tolerance of ±4% over line and load conditions.
- What is the maximum output current of the LM2575-5.0BT L3?
The maximum output current is 1A.
- What is the input voltage range for the LM2575-5.0BT L3?
The input voltage range is from 4.75V to 40V.
- What is the oscillator frequency of the LM2575-5.0BT L3?
The oscillator frequency is 52 kHz.
- Does the LM2575-5.0BT L3 have thermal protection?
Yes, it includes thermal shutdown and current limit protection.
- How many external components are required for the LM2575-5.0BT L3 to operate?
Only 4 external components are required.
- What type of shutdown capability does the LM2575-5.0BT L3 have?
The device features TTL shutdown capability with a low power standby mode.
- What is the maximum junction temperature for the LM2575-5.0BT L3?
The maximum junction temperature is 150°C.
- What is the ESD rating for the LM2575-5.0BT L3?
The ESD rating is 2.0 kV (Human Body Model).
- What are some common applications of the LM2575-5.0BT L3?
Common applications include simple high-efficiency step-down regulators, efficient pre-regulators for linear regulators, on-card switching regulators, and power supplies for battery chargers.
