Overview
The LM2574HVM-5.0/NOPB is a high-efficiency step-down (buck) switching regulator produced by Texas Instruments. This device is part of the LM2574 series, known for its simplicity and high performance. It is designed to provide a fixed output voltage of 5 V and can handle input voltages up to 60 V, making it versatile for various applications. The LM2574HVM-5.0/NOPB is capable of delivering up to 0.5 A of DC load current with excellent line and load regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 7 V to 60 V | V |
| Output Voltage | 5 V | V |
| Output Current | Up to 0.5 A | A |
| Switching Frequency | 52 kHz (typical) | kHz |
| Operating Temperature Range | -40°C to 125°C | °C |
| Efficiency | Up to 77% | % |
| Current Limit | 1.6 A (peak) | A |
| Thermal Shutdown | Yes | |
| Package Type | 8-Pin PDIP or 14-Pin SOIC |
Key Features
- High efficiency with up to 77% efficiency at full load.
- Wide input voltage range: 7 V to 60 V.
- Fixed output voltage of 5 V with ±4% maximum over line and load conditions.
- Requires only four external components for operation.
- Internal frequency compensation and fixed-frequency oscillator (52 kHz typical).
- TTL shutdown capability with low-power standby mode.
- Thermal shutdown and current-limit protection.
- Uses readily available standard inductors.
Applications
- Simple high-efficiency step-down (buck) regulators.
- Efficient preregulators for linear regulators.
- On-card switching regulators.
- Positive-to-negative converter (buck-boost) configurations.
Q & A
- What is the maximum input voltage for the LM2574HVM-5.0/NOPB? The maximum input voltage is 60 V.
- What is the fixed output voltage of the LM2574HVM-5.0/NOPB? The fixed output voltage is 5 V.
- What is the maximum output current of the LM2574HVM-5.0/NOPB? The maximum output current is up to 0.5 A.
- What is the switching frequency of the LM2574HVM-5.0/NOPB? The switching frequency is typically 52 kHz.
- Does the LM2574HVM-5.0/NOPB have thermal shutdown protection? Yes, it does have thermal shutdown protection.
- How many external components are required for the LM2574HVM-5.0/NOPB to operate? Only four external components are required.
- What is the operating temperature range of the LM2574HVM-5.0/NOPB? The operating temperature range is -40°C to 125°C.
- What is the efficiency of the LM2574HVM-5.0/NOPB at full load? The efficiency can be up to 77% at full load.
- Does the LM2574HVM-5.0/NOPB support TTL shutdown capability? Yes, it supports TTL shutdown capability with a low-power standby mode.
- What types of packages are available for the LM2574HVM-5.0/NOPB? It is available in 8-Pin PDIP and 14-Pin SOIC packages.
