LM1770 Datasheet | National Semiconductor

LM1770 Low-Voltage SOT23 Synchronous Buck Controller With No External pensation November 2005 LM1770 Low-Voltage SOT23 Synchronous Buck Controller With No External pensation General Description The LM1770 is an efficient synchronous buck switching controller in a tiny SOT23 package. The constant on-time control scheme provides a simple design free of pensation ponents, allowing minimal ponent count and board space. It also incorporates a unique input feed-forward to maintain a constant frequency independent of the input voltage. The LM1770 is optimized for a low voltage input range of 2.8V to 5.5V and can provide an adjustable output as low as 0.8V. Driving an external...