Overview
The LM2576T-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 switch-mode power supplies. The LM2576T-15G is specifically configured to provide a fixed output voltage of 15 V, making it suitable for a variety of applications requiring high efficiency and reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 14.7 - 15.3 | V (Vin = 30 V, ILoad = 0.5 A, TJ = 25°C) |
| Output Voltage Range | 14.25 - 15.75 | V (18 V ≤ Vin ≤ 40 V, 0.5 A ≤ ILoad ≤ 3.0 A, TJ = -40 to +125°C) |
| Guaranteed Output Current | 3.0 | A |
| Input Voltage Range | 7.0 - 40 | V |
| Oscillator Frequency | 52 kHz (typical) | kHz |
| Efficiency | 88% | % (Vin = 18 V, ILoad = 3.0 A) |
| Operating Junction Temperature Range | -40 to +125 | °C |
| Standby Current | 80 μA (typical) | μA |
Key Features
- Fixed output voltage of 15 V with ±4% tolerance over specified input and load conditions.
- Guaranteed 3.0 A output current.
- Wide input voltage range from 7.0 V to 40 V.
- Requires only 4 external components for operation.
- 52 kHz fixed frequency internal oscillator.
- TTL shutdown capability with low power standby mode.
- High efficiency with up to 88% efficiency at certain operating conditions.
- Cycle-by-cycle current limiting and thermal shutdown for protection.
- Uses readily available standard inductors.
Applications
The LM2576T-15G is suitable for a wide range of applications, including:
- Power supplies for industrial and consumer electronics.
- DC-DC converters in automotive systems.
- Telecommunication equipment.
- Medical devices requiring stable and efficient power supply.
- Embedded systems and IoT devices.
Q & A
- What is the output voltage of the LM2576T-15G?
The output voltage of the LM2576T-15G is 15 V with a ±4% tolerance over specified input and load conditions.
- What is the maximum output current of the LM2576T-15G?
The LM2576T-15G can provide a maximum output current of 3.0 A.
- What is the input voltage range for the LM2576T-15G?
The input voltage range for the LM2576T-15G is from 7.0 V to 40 V.
- How many external components are required for the LM2576T-15G to operate?
The LM2576T-15G requires only 4 external components for operation.
- What is the oscillator frequency of the LM2576T-15G?
The oscillator frequency of the LM2576T-15G is 52 kHz.
- Does the LM2576T-15G have a shutdown feature?
Yes, the LM2576T-15G has a TTL shutdown capability with a low power standby mode.
- What is the efficiency of the LM2576T-15G?
The efficiency of the LM2576T-15G can be up to 88% at certain operating conditions.
- What protection features does the LM2576T-15G have?
The LM2576T-15G includes cycle-by-cycle current limiting and thermal shutdown for protection.
- What type of inductors can be used with the LM2576T-15G?
The LM2576T-15G can use readily available standard inductors optimized for its operation.
- What is the operating junction temperature range for the LM2576T-15G?
The operating junction temperature range for the LM2576T-15G is from -40°C to +125°C.
