Overview
The LM2576D2TR4-012G is a step-down switching regulator produced by onsemi. This monolithic integrated circuit is designed for easy and convenient implementation of a buck converter, offering high efficiency and minimal external component requirements. The LM2576 series is available in various fixed output voltages, including 3.3 V, 5.0 V, 12 V, and 15 V, as well as an adjustable output version. The LM2576D2TR4-012G specifically provides a fixed output voltage of 12 V and is capable of driving a 3.0 A load with excellent line and load regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 12 | V |
| Output Current | 3.0 | A |
| Number of Outputs | 1 | |
| Input Voltage - Min | 7 | V |
| Input Voltage - Max | 40 | V |
| Switching Frequency | 52 | kHz |
| Operating Junction Temperature Range | -40 to +125 | °C |
| Oscillator Frequency Tolerance | ±10% (±2% over 0°C to 125°C) | |
| Output Voltage Tolerance | ±4% over specified input voltages and output load conditions |
Key Features
- Fixed output voltage of 12 V with ±4% tolerance
- Guaranteed 3.0 A output current
- Wide input voltage range from 7 V to 40 V
- 52 kHz fixed frequency internal oscillator
- TTL shutdown capability with low power standby mode (approximately 80 μA standby current)
- High efficiency, especially with higher input voltages
- Requires only 4 external components for basic operation
- Thermal shutdown and cycle-by-cycle current limiting for protection
- Moisture Sensitivity Level (MSL) equals 1, and Pb-free packages are available
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 LM2576D2TR4-012G?
The output voltage of the LM2576D2TR4-012G is 12 V. - What is the maximum output current of the LM2576D2TR4-012G?
The maximum output current is 3.0 A. - What is the input voltage range for the LM2576D2TR4-012G?
The input voltage range is from 7 V to 40 V. - What is the switching frequency of the LM2576D2TR4-012G?
The switching frequency is 52 kHz. - Does the LM2576D2TR4-012G have built-in protection features?
Yes, it includes thermal shutdown and cycle-by-cycle current limiting for protection. - How many external components are required for basic operation of the LM2576D2TR4-012G?
Only 4 external components are required for basic operation. - What is the typical standby current when the LM2576D2TR4-012G is in shutdown mode?
The typical standby current is approximately 80 μA. - Is the LM2576D2TR4-012G available in Pb-free packages?
Yes, Pb-free packages are available. - What is the operating junction temperature range for the LM2576D2TR4-012G?
The operating junction temperature range is from -40°C to +125°C. - Can the LM2576D2TR4-012G be used as a pre-regulator for linear regulators?
Yes, it can be used as an efficient pre-regulator for linear regulators.
