Overview
The LM3671MF-3.3 is a high-efficiency step-down DC-DC converter produced by Texas Instruments. This device is optimized for powering low-voltage circuits from a single Li-Ion cell battery or input voltage rails ranging from 2.7 V to 5.5 V. It provides up to 600-mA load current across the entire input voltage range, making it suitable for a variety of portable and automotive applications. The LM3671MF-3.3 is available in a compact SOT-23 package, enhancing power density and reducing the need for external components.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 5.5 | V |
| Output Voltage (Fixed) | 3.3 | V |
| Maximum Load Current | 600 | mA |
| Switching Frequency (Typical) | 2 MHz | |
| Quiescent Current (Typical) | 16 µA | |
| Shutdown Current (Typical) | 0.01 µA | |
| Operating Temperature Range | -40 to 125°C | |
| Package Type | SOT-23 | |
| Number of Pins | 5 |
Key Features
- AEC Q100-Qualified for automotive applications with a temperature grade 1: -40°C to +125°C ambient operating temperature range.
- High-efficiency operation with internal synchronous rectification.
- Automatic PFM-PWM mode switching for improved system control and reduced quiescent current during light load and standby operation.
- Internal soft start and thermal shutdown protection.
- Only three tiny surface-mount external components required (one inductor, two ceramic capacitors).
- Current overload protection.
- Available in fixed output voltages and an adjustable output voltage version.
Applications
- Mobile phones
- PDAs
- MP3 players
- W-LAN devices
- Portable instruments
- Digital still cameras
- Portable hard disk drives
- Automotive systems
- Portable medical equipment
- Handheld transaction terminals
- Wireless home-automation equipment
Q & A
- What is the input voltage range of the LM3671MF-3.3?
The input voltage range is from 2.7 V to 5.5 V.
- What is the maximum load current of the LM3671MF-3.3?
The maximum load current is 600 mA.
- What is the typical switching frequency of the LM3671MF-3.3?
The typical switching frequency is 2 MHz.
- What is the quiescent current of the LM3671MF-3.3 in typical conditions?
The quiescent current is 16 µA.
- Does the LM3671MF-3.3 have thermal shutdown protection?
Yes, it has internal thermal shutdown protection.
- What types of external components are required for the LM3671MF-3.3?
Only three tiny surface-mount external components are required: one inductor and two ceramic capacitors.
- Is the LM3671MF-3.3 qualified for automotive applications?
Yes, it is AEC Q100-Qualified for automotive applications.
- What is the operating temperature range of the LM3671MF-3.3?
The operating temperature range is -40°C to 125°C.
- What package type is the LM3671MF-3.3 available in?
The LM3671MF-3.3 is available in a SOT-23 package.
- What are some common applications of the LM3671MF-3.3?
Common applications include mobile phones, PDAs, MP3 players, and automotive systems.
