Overview
The LM2576D2T-ADJ is a monolithic integrated circuit designed by ON Semiconductor, ideally suited for the easy and convenient design of step-down switching regulators. This component is part of the LM2576 series, which offers high efficiency and robust protection features, making it a reliable choice for various power supply applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 7 to 40 | V |
| Output Voltage Range (Adjustable) | 1.23 to 37 | V |
| Guaranteed Output Current | 3.0 | A |
| Switching Frequency | 52 kHz | |
| Operating Junction Temperature Range | -40 to +125 | °C |
| Output Voltage Tolerance | ±4% (over line and load conditions) | |
| Oscillator Frequency Tolerance | ±10% (±2% over 0°C to 125°C) | |
| Standby Current | 80 μA (typical) |
Key Features
- High efficiency with up to 77% efficiency at full load.
- Guaranteed ±4% tolerance on output voltage over specified input voltages and output load conditions.
- Fixed 52 kHz internal oscillator frequency.
- TTL shutdown capability with low power standby mode.
- Cycle-by-cycle current limiting and thermal shutdown for full protection under fault conditions.
- Requires only 4 external components for operation.
- Uses readily available standard inductors.
Applications
The LM2576D2T-ADJ is suitable for a wide range of applications, including:
- Power supplies for electronic devices requiring high efficiency and reliability.
- Industrial control systems and automation.
- Telecommunication equipment.
- Medical devices and equipment.
- Consumer electronics such as audio and video systems.
Q & A
- What is the input voltage range of the LM2576D2T-ADJ?
The input voltage range is from 7 V to 40 V.
- What is the adjustable output voltage range of the LM2576D2T-ADJ?
The adjustable output voltage range is from 1.23 V to 37 V.
- What is the guaranteed output current of the LM2576D2T-ADJ?
The guaranteed output current is 3.0 A.
- What is the switching frequency of the LM2576D2T-ADJ?
The switching frequency is 52 kHz.
- What are the operating junction temperature limits for the LM2576D2T-ADJ?
The operating junction temperature range is from -40°C to +125°C.
- Does the LM2576D2T-ADJ have built-in protection features?
Yes, it includes cycle-by-cycle current limiting and thermal shutdown for full protection under fault conditions.
- How many external components are required for the LM2576D2T-ADJ to operate?
Only 4 external components are required.
- What type of inductors can be used with the LM2576D2T-ADJ?
Readily available standard inductors can be used.
- What is the typical standby current of the LM2576D2T-ADJ?
The typical standby current is 80 μA.
- Is the LM2576D2T-ADJ suitable for high-efficiency applications?
Yes, it offers high efficiency, with up to 77% efficiency at full load.
