Overview
The LM2574M-5.0, produced by Texas Instruments, is a member of the LM2574 series of SIMPLE SWITCHER® step-down voltage regulators. This device is a monolithic integrated circuit designed to provide all the active functions for a step-down (buck) switching regulator. It is capable of driving a 0.5-A load with excellent line and load regulation. The LM2574M-5.0 is specifically configured to output a fixed voltage of 5 V, making it suitable for a wide range of applications requiring efficient and reliable voltage regulation.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (VIN = 12 V, ILOAD = 100 mA, TJ = 25°C) | 4.9 | 5 | 5.1 | V |
| Output Voltage (7 V ≤ VIN ≤ 40 V, 0.1 A ≤ ILOAD ≤ 0.5 A) | 4.75 | 5 | 5.2 | V |
| Input Voltage Range | 7 | - | 40 | V |
| Output Current | 0.1 | - | 0.5 | A |
| Oscillator Frequency | 47 | 52 | 58 | kHz |
| Efficiency (VIN = 12 V, ILOAD = 0.5 A) | - | 77 | - | % |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- Fixed output voltage of 5 V
- Adjustable version available with output voltage range: 1.23 V to 37 V (57 V for HV version) ±4% maximum over line and load conditions
- Guaranteed 0.5-A output current
- Wide input voltage range: 7 V to 40 V (up to 60 V for HV version)
- Requires only four external components
- 52-kHz fixed-frequency internal oscillator
- TTL shutdown capability, low-power standby mode
- High efficiency
- Uses readily available standard inductors
- Thermal shutdown and current-limit protection
Applications
- Simple high-efficiency step-down (buck) regulator
- Efficient preregulator for linear regulators
- On-card switching regulators
- Positive-to-negative converter (buck-boost)
Q & A
- What is the output voltage of the LM2574M-5.0?
The output voltage of the LM2574M-5.0 is fixed at 5 V.
- What is the input voltage range for the LM2574M-5.0?
The input voltage range for the LM2574M-5.0 is from 7 V to 40 V.
- How much output current can the LM2574M-5.0 deliver?
The LM2574M-5.0 can deliver up to 0.5 A of output current.
- What is the oscillator frequency of the LM2574M-5.0?
The oscillator frequency of the LM2574M-5.0 is 52 kHz.
- Does the LM2574M-5.0 have thermal shutdown and current-limit protection?
- How many external components are required for the LM2574M-5.0?
The LM2574M-5.0 requires only four external components.
- What is the efficiency of the LM2574M-5.0 at full load?
The efficiency of the LM2574M-5.0 at full load (VIN = 12 V, ILOAD = 0.5 A) is approximately 77%.
- Can the LM2574M-5.0 be shut down externally?
- What is the operating temperature range of the LM2574M-5.0?
The operating temperature range of the LM2574M-5.0 is from -40°C to 125°C.
- Is the LM2574M-5.0 Pb-free?
