Overview
The LM2576T-005G is a monolithic integrated circuit from onsemi, designed as a step-down switching regulator. This device is part of the LM2576 series, which is ideal for easy and convenient design of switch-mode power supplies. It offers a range of output voltage versions, including fixed outputs of 3.3 V, 5.0 V, 12 V, and 15 V, as well as an adjustable version. The LM2576T-005G is known for its high efficiency, wide input voltage range, and robust protection features.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Output Voltage (Fixed Versions) | 3.3 V, 5.0 V, 12 V, 15 V | - | - | V |
| Output Voltage (Adjustable Version) | 1.23 | 1.23 | 37 | V |
| Output Current | - | 3.0 | - | A |
| Input Voltage Range | 7.0 | - | 40 | V |
| Oscillator Frequency | 47 | 52 | 63 | kHz |
| Operating Junction Temperature Range | -40 | - | 125 | °C |
| Efficiency (Typical) | - | 75-88 | - | % |
| Standby Current | - | 80 | - | μA |
Key Features
- Guaranteed ±4% tolerance on output voltage within specified input voltages and output load conditions
- ±10% tolerance on the oscillator frequency (±2% over 0°C to 125°C)
- External shutdown with 80 μA (typical) standby current
- Cycle-by-cycle current limiting and thermal shutdown for full protection under fault conditions
- Requires only 4 external components
- 52 kHz fixed frequency internal oscillator
- TTL shutdown capability and low power standby mode
- High efficiency and use of readily available standard inductors
Applications
The LM2576T-005G is suitable for a wide range of applications requiring efficient step-down voltage regulation. These include:
- Power supplies for electronic devices
- Industrial control systems
- Automotive electronics
- Telecommunication equipment
- Consumer electronics requiring stable and efficient power supply
Q & A
- What are the available output voltage versions for the LM2576T-005G?
The LM2576T-005G is available in fixed output voltage versions of 3.3 V, 5.0 V, 12 V, and 15 V, as well as an adjustable version ranging from 1.23 V to 37 V.
- What is the maximum output current of the LM2576T-005G?
The maximum output current is 3.0 A.
- What is the input voltage range for the LM2576T-005G?
The input voltage range is from 7.0 V to 40 V.
- What is the oscillator frequency of the LM2576T-005G?
The oscillator frequency is 52 kHz with a tolerance of ±10% (±2% over 0°C to 125°C).
- Does the LM2576T-005G 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 LM2576T-005G?
Only 4 external components are required.
- What is the standby current of the LM2576T-005G in shutdown mode?
The standby current is typically 80 μA.
- What is the operating junction temperature range for the LM2576T-005G?
The operating junction temperature range is from -40°C to +125°C.
- What is the efficiency of the LM2576T-005G?
The efficiency ranges from 75% to 88% depending on the output voltage and load conditions.
- Can the LM2576T-005G be used in automotive applications?
Yes, it is suitable for automotive electronics due to its robust design and wide operating temperature range.
