Overview
The LM3670MF-1.2/NOPB step-down DC-DC converter is optimized for powering ultralow voltage circuits from a single Li-Ion cell or three-cell NiMH/NiCd batteries. It provides up to 350-mA load current, over an input voltage range from 2.5 V to 5.5 V. There are several different fixed voltage output options available as well as an adjustable output voltage version.
The LM3670 is available in a 5-pin SOT-23 package. A high switching frequency (1 MHz typical) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor and two ceramic capacitors, are required.
Features
Bulk Package
Positive Output Configuration
Buck Topology
Fixed Output Type
1 Number of Outputs
2.5V Voltage - Input (Min)
5.5V Voltage - Input (Max)
1.2V Voltage - Output (Min/Fixed)
350mA Current - Output
1MHz Frequency - Switching
Yes Synchronous Rectifier
Surface Mount Mounting Type