Overview
The LM22671MRX-5.0/NOPB is a high-performance step-down (buck) voltage regulator from Texas Instruments, part of their SIMPLE SWITCHER® family. This regulator is designed to provide efficient power conversion with a minimum number of external components. It features a wide input voltage range of 4.5 V to 42 V and can deliver up to 500 mA of load current. The device is available in an 8-pin HSOIC (DDA) package and operates over a junction temperature range of -40°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Control Mode | Voltage Mode |
| Input Voltage Range (V) | 4.5 to 42 |
| Output Voltage (V) | Fixed at 5.0 V |
| Maximum Output Current (A) | 0.5 |
| Typical Quiescent Current (mA) | 3.4 |
| Operating Temperature Range (°C) | -40 to 125 |
| Switching Frequency Range (kHz) | 200 to 1000 |
| Package Type | HSOIC (DDA) |
| Number of Pins | 8 |
| Package Quantity | 2500 (LARGE T&R) |
Key Features
- Wide input voltage range: 4.5 V to 42 V
- Internally compensated voltage mode control
- Stable with low ESR ceramic capacitors
- 200 mΩ N-channel MOSFET
- ±1.5% feedback reference accuracy
- Default switching frequency of 500 kHz, adjustable from 200 kHz to 1 MHz
- Adjustable switching frequency and synchronization
- Precision enable pin
- Integrated boot-strap diode
- Adjustable soft-start feature
- Fully WEBENCH® enabled
- Thermal shutdown and current limiting for protection
Applications
The LM22671MRX-5.0/NOPB is suitable for a variety of applications requiring efficient high-voltage step-down conversion. These include:
- Automotive electronics, particularly those subject to wide input voltage extremes such as load-dump and cold-cranking conditions
- Industrial power supplies where high efficiency and reliability are crucial
- Consumer electronics requiring compact and efficient power management solutions
- Telecommunications and networking equipment
Q & A
- What is the input voltage range of the LM22671MRX-5.0/NOPB?
The input voltage range is 4.5 V to 42 V.
- What is the fixed output voltage of the LM22671MRX-5.0/NOPB?
The output voltage is fixed at 5.0 V.
- What is the maximum output current of the LM22671MRX-5.0/NOPB?
The maximum output current is 500 mA.
- What is the typical quiescent current of the LM22671MRX-5.0/NOPB?
The typical quiescent current is 3.4 mA.
- What is the operating temperature range of the LM22671MRX-5.0/NOPB?
The operating temperature range is -40°C to 125°C.
- Can the switching frequency of the LM22671MRX-5.0/NOPB be adjusted?
- Does the LM22671MRX-5.0/NOPB have built-in protection features?
- What package type is the LM22671MRX-5.0/NOPB available in?
- Is the LM22671MRX-5.0/NOPB RoHS compliant?
- Can the LM22671MRX-5.0/NOPB be synchronized with a system clock?
