Overview
The LM2576D2T-15G is a monolithic integrated circuit from onsemi, designed as a step-down switching regulator (buck converter). This device is part of the LM2576 series, which is ideal for easy and convenient design of high-efficiency power supplies. The LM2576D2T-15G is specifically configured to provide a fixed output voltage of 15 V and can drive a load current of up to 3.0 A. It features a wide input voltage range from 7 V to 40 V, making it versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 15 | V |
| Output Current | 3.0 | A |
| Number of Outputs | 1 | - |
| Input Voltage - Min | 7 | V |
| Input Voltage - Max | 40 | V |
| Switching Frequency | 52 kHz | - |
| Oscillator Frequency Tolerance | ±10% (±2% over 0°C to 125°C) | - |
| Output Voltage Tolerance | ±4% over specified input and load conditions | - |
| Maximum Junction Temperature | 150 | °C |
| Thermal Shutdown | Yes | - |
| Current Limit Protection | Yes | - |
| Standby Quiescent Current | 80 μA (typical) | - |
Key Features
- Fixed output voltage of 15 V, with other versions available at 3.3 V, 5.0 V, 12 V, and adjustable output from 1.23 V to 37 V.
- Guaranteed 3.0 A output current.
- Wide input voltage range from 7 V to 40 V.
- Requires only 4 external components for a basic application.
- 52 kHz fixed frequency internal oscillator.
- TTL shutdown capability with low power standby mode.
- High efficiency, especially at higher input voltages.
- Uses readily available standard inductors.
- 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 LM2576D2T-15G?
The output voltage of the LM2576D2T-15G is 15 V.
- What is the maximum output current of the LM2576D2T-15G?
The maximum output current is 3.0 A.
- What is the input voltage range for the LM2576D2T-15G?
The input voltage range is from 7 V to 40 V.
- What is the switching frequency of the LM2576D2T-15G?
The switching frequency is 52 kHz.
- Does the LM2576D2T-15G have thermal shutdown protection?
Yes, it includes thermal shutdown protection.
- How many external components are required for a basic application of the LM2576D2T-15G?
Only 4 external components are required.
- What is the standby quiescent current of the LM2576D2T-15G?
The standby quiescent current is typically 80 μA.
- Is the LM2576D2T-15G available in Pb-free packages?
Yes, Pb-free packages are available.
- What are some common applications of the LM2576D2T-15G?
Common applications include simple high-efficiency step-down regulators, pre-regulators for linear regulators, on-card switching regulators, and power supplies for battery chargers.
- What is the maximum junction temperature for the LM2576D2T-15G?
The maximum junction temperature is 150°C.
