LM3674MF-1.8

• 600 mA maximum load current
• Input voltages range from 2.7V to 5.5V
• Fixed and adjustable output voltages range from 1.0V to 3.3V
• Works from a single lithium-ion battery
• High efficiency internal synchronous rectification
• Internal soft start
• 0.01μA (typical) shutdown current
• 2 MHz PWM fixed switching frequency (typical)
• SOT23-5 package
• Current overload protection and thermal shutdown protection

illustrate

The LM3674 step-down DC-DC converter is optimized for supplying a 2.7V to 5.5V low-voltage circuit from a single-cell Li-Ion battery and input voltage rail. It can deliver up to 600mA of load current over the entire input voltage range. There are several fixed and adjustable output voltage versions.

The device offers superior performance and performance in mobile phones and similar portable systems. In PWM mode, the device operates at a fixed frequency of 2 MHz (typical). Internal synchronous rectification provides high efficiency during PWM mode operation. In shutdown mode, the device shuts down and power consumption is reduced to 0.01μA (typical).

The LM3674 is available in SOT23-5, lead (PB) and lead (no PB) versions. A high switching frequency of 2 MHz (typical) allows the use of only three tiny external surface mount components, an inductor, and two ceramic capacitors.

apply

• mobile phone
• Pocket PC
• MP3 player
• Portable instrument
• W - LAN
• Digital cameras
• Portable hard drives