Overview
The LM3671MFX-ADJ/NOPB is a step-down DC-DC converter from Texas Instruments, optimized for powering low voltage circuits from a single Li-Ion cell battery. It operates within an input voltage range of 2.7 V to 5.5 V and provides up to 600-mA load current across this range. The device is available in both fixed output voltages and an adjustable output voltage version, ranging from 1.1 V to 3.3 V. It is particularly suited for mobile phones and other portable systems, offering superior features and performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 5.5 | V |
| Maximum Load Current | 600 | mA |
| Output Voltage Range (Adjustable) | 1.1 to 3.3 | V |
| Switching Frequency (Typical) | 2 MHz | |
| Quiescent Current (Typical) | 16 µA | |
| Shutdown Current (Typical) | 0.01 µA | |
| Operating Temperature Range | -40 to 85 | °C |
| Package Type | DSBGA (5 pins) |
Key Features
- AEC Q100-Qualified for automotive applications with a device temperature grade of –40°C to +125°C.
- 16-µA typical quiescent current and 0.01-µA typical shutdown current.
- 2-MHz PWM fixed switching frequency (typical) and automatic PFM-PWM mode switching.
- Internal synchronous rectification for high efficiency and internal soft start.
- Only three tiny surface-mount external components required (one inductor, two ceramic capacitors).
- Current overload and thermal shutdown protection.
- Operates from a single Li-Ion cell battery.
Applications
- Mobile Phones
- PDAs
- MP3 Players
- W-LAN
- 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 LM3671MFX-ADJ/NOPB?
The input voltage range is from 2.7 V to 5.5 V.
- What is the maximum load current the LM3671MFX-ADJ/NOPB can provide?
The device can provide up to 600-mA load current.
- What are the available output voltage options for the LM3671MFX-ADJ/NOPB?
The device is available in fixed output voltages and an adjustable output voltage version ranging from 1.1 V to 3.3 V.
- What is the typical switching frequency of the LM3671MFX-ADJ/NOPB?
The typical switching frequency is 2 MHz.
- How many external components are required for the LM3671MFX-ADJ/NOPB?
Only three tiny surface-mount external components are required: one inductor and two ceramic capacitors.
- What is the quiescent current of the LM3671MFX-ADJ/NOPB in typical conditions?
The typical quiescent current is 16 µA.
- What is the shutdown current of the LM3671MFX-ADJ/NOPB in typical conditions?
The typical shutdown current is 0.01 µA.
- Does the LM3671MFX-ADJ/NOPB have thermal shutdown protection?
Yes, it has current overload and thermal shutdown protection.
- Is the LM3671MFX-ADJ/NOPB qualified for automotive applications?
Yes, it is AEC Q100-Qualified for automotive applications.
- What are some common applications of the LM3671MFX-ADJ/NOPB?
Common applications include mobile phones, PDAs, MP3 players, and other portable systems.
