SCT2400.pdf
No.13070
? Wide Input Range: 4.5V-40V
? Up to 600mA Continuous Output Current
? Less than 0.1% Output Ripple at 12V Output
? 0.81V ± 2.5% Feedback Reference Voltage
? Integrated 600mΩ High-Side and 300mΩ Low-
Side Power MOSFETs
? Fixed Frequency 2MHz
? Pulse Skipping Mode (PSM) at Light Load
? 90uA Quiescent Current in Sleep Mode
? 100ns Minimum On-time
? 1ms Internal Soft-start Time
? Over-Temperature Protection
? Available in an TSOT23-6 Package
The SCT2400 is a high frequency, up to 600mA continuous output synchronous buck converter. It has wide input voltage rating from 4.5V to 40V, which integrates a 600mΩ high-side MOSFET and a 300mΩ low-side MOSFET. The SCT2400, adopts the peak current mode control with built-in loop compensation to make the chip easy to use.
The SCT2400 features fixed 2MHz switching frequency, which minimizes the external off chip passive components size and reduces the output ripple to be lower than 0.1% of output when the output is 12V. With a minimum 100ns on-time of high-side MOSFET, the SCT2400 allows power conversion from high input voltage to low output voltage.
The SCT2400 supports the Pulse Skipping Modulation (PSM) with typical 90uA low quiescent current. It achieves 85% power efficiency at 10mA light load condition.
The SCT2400 offers cycle-by-cycle current limit, thermal shutdown protection and input voltage undervoltage protection. The device is available in a 6-pin small profile TSOT23-6 package.
