• 500kHz Switching Frequency with ±6% Jittering Span of Frequency Spread Spectrum
• Up to 2A Continuous Output Load Current
• Fully Integrated 130mΩ (Rdson) High Side MOSFET 70mΩ (Rdson) Low Side MOSFET
• 1uA Shut-down Current
• 89% Power Efficiency at 5mA Load Current
• LDO Mode
• Peak Current Mode Control with Integrated Loop Compensation
• PSM Mode in Light Load Condition
• 4ms Soft Start Time
• Output Over Voltage Protection
• Thermal Shutdown Protection at 160°C
• Available in SOP-8 Package

The SCT9325 are 2A, 500KHz, synonous buck converters with up to 32V wide input voltage range, which fully integrates a 130mΩ high-side MOSFET a 70mΩ low-side MOSFET to provide high efficiency step-down DCDC conversion. The SCT9325 adopt peak current mode control with the integrated compensation network the output feedback resistors network, which make the device easily to be used by minimizing the off-chip component counts. The SCT9325 support the Pulse Skipping Modulation (PSM) with typical 20uA Ultra-Low Quiescent achieved 80% efficiency at 1mA 85% at 5mA light load conditions.
The SCT9325 are Electromagnetic Interference (EMI) friendly buck converters. The SCT9325 feature Frequency Spread Spectrum (FSS) with ±6% jittering span of the 500KHz switching frequency modulation rate 1/512 of switching frequency to reduce the conducted EMI. The converter has proprietary designed gate driver scheme to resist switching node high frequency ringing without sacrificing MOSFET turn on turn off time, which further erases high frequency radiation EMI noise caused by the MOSFETs hard switching. When the converter enters PSM mode, the artificial switching node anti-ringing circuit is specially designed to address the radiation EMI noise in the light load condition.

The SCT9325 offers output over-voltage protection, cycle-by-cycle peak current limit, thermal shutdown protection. The device is available in a low-profile SOP-8L package.


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