Overview
The LM22672MR-5.0/NOPB is a high-performance step-down voltage regulator from Texas Instruments, part of their SIMPLE SWITCHER® family. This regulator is designed to provide efficient high-voltage step-down conversion with a minimum number of external components. It features a 42 V N-channel MOSFET switch capable of delivering up to 1 A of load current, making it suitable for a wide range of applications requiring high input voltages and high efficiency.
The LM22672MR-5.0/NOPB offers fixed 5 V output and adjustable output voltage options, along with excellent line and load regulation and high efficiency (> 90%). The regulator is easy to use, with internal loop compensation and a default switching frequency of 500 kHz, which can be adjusted from 200 kHz to 1 MHz using a single external resistor.
Key Specifications
| Parameter | Value |
|---|---|
| Package | HSOIC (DDA) with 8 pins |
| Operating Temperature Range (°C) | -40 to 125 |
| Input Voltage Range | 4.5 V to 42 V |
| Output Voltage | Fixed 5 V or Adjustable (as low as 1.285 V) |
| Maximum Output Current (A) | 1 |
| Switching Frequency (kHz) | Default: 500 kHz, Adjustable: 200 kHz to 1 MHz |
| Feedback Reference Accuracy | ±1.5% |
| MOSFET On-Resistance (mΩ) | 200 |
| Quiescent Current (mA) | 3.4 (typ) |
| Shutdown Current (µA) | 25 (typ) |
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
- Output Voltage Options: Fixed 5 V or Adjustable (as low as 1.285 V)
- ±1.5% Feedback Reference Accuracy
- Default Switching Frequency: 500 kHz, Adjustable from 200 kHz to 1 MHz
- Adjustable Switching Frequency and Synchronization
- Precision Enable Input
- Integrated Boot-Strap Diode
- Adjustable Soft-Start
- Fully WEBENCH® Enabled
- AEC-Q100 Grade 1 Qualified for Automotive Applications (LM22672-Q1)
- SO PowerPAD (Exposed Pad)
Applications
The LM22672MR-5.0/NOPB is suitable for various applications requiring high-input voltages and efficient step-down voltage conversion. These include:
- Automotive Systems: Especially with the LM22672-Q1 version, which is AEC-Q100 Grade 1 Qualified.
- Industrial Power Supplies: Where high efficiency and reliability are crucial.
- Telecommunications Equipment: For powering various components within telecom systems.
- Consumer Electronics: Such as set-top boxes, gaming consoles, and other high-power devices.
- Medical Devices: Where precise voltage regulation and high efficiency are essential.
Q & A
- What is the input voltage range of the LM22672MR-5.0/NOPB?
The input voltage range is from 4.5 V to 42 V.
- What are the output voltage options for the LM22672MR-5.0/NOPB?
The output voltage can be fixed at 5 V or adjustable down to 1.285 V.
- What is the maximum output current of the LM22672MR-5.0/NOPB?
The maximum output current is 1 A.
- What is the default switching frequency of the LM22672MR-5.0/NOPB?
The default switching frequency is 500 kHz, but it can be adjusted from 200 kHz to 1 MHz.
- Does the LM22672MR-5.0/NOPB have built-in thermal protection?
- What is the quiescent current of the LM22672MR-5.0/NOPB in shutdown mode?
The quiescent current in shutdown mode is 25 µA (typ).
- Is the LM22672MR-5.0/NOPB suitable for automotive applications?
- What design tools are available for the LM22672MR-5.0/NOPB?
- What is the operating temperature range of the LM22672MR-5.0/NOPB?
- Does the LM22672MR-5.0/NOPB support synchronization with a system clock?
