SCT2323，SCT2325 3.8V-32V Vin,1.1MHz, 2A Synchronous Step-down DC DC Converter with EMI Reduction
■The SCT2323 and SCT2325 are 2A, 1.1MHz, synchronous buck converters with up to 32V wide input voltage range, which fully integrates a 130mΩ high-side MOSFET anda 70mΩ low-side MOSFET to provide high efficiency step-downDCDC conversion. The SCT2323 and SCT2325 adoptpeak current mode control with the integratedcompensation networkand the output feedback resistors network, which makethe device easilyto be used by minimizing the off-chip component counts.The SCT2323 and SCT2325 support the Pulse Skipping Modulation(PSM) with typical 20uA Ultra-Low Quiescent and achieved80% efficiencyat 1mA and 85% at 5mA light load conditions.
■The SCT2323 and SCT2325 are Electromagnetic Interference(EMI) friendly buck converters. The SCT2323 and SCT2325 feature Frequency Spread Spectrum (FSS) with ±6% jittering span of the 1.1MHz switching frequency and modulation rate 1/512 of switching frequency toreduce the conducted EMI. The converter has proprietary designed gate driver scheme to resist switching node high frequency ringing without sacrificing MOSFET turn onand turn off time, which further erases high frequency radiation EMInoisecaused by the MOSFET shard switching. When the converter enters PSM mode, the artificial switching node anti-ringing circuitis specially designed to address the radiation EMI noise in the light load condition.
■The SCT2323 and SCT2325 offers output over-voltage protection, cycle-by-cycle peak current limit, and thermal shutdown protection. The device is available in a low-profile TSOT23-6 package.
●FEATURES：
■EMI Reduction with Switching Node Ringing-free
■3.8V-32VWide Input Voltage Range
■Up to 2A Continuous Output Load Current
■3.3V ±1%Output Voltage(SCT2323)
■5V ±1%Output Voltage(SCT2325)
■Fully Integrated 130mΩ Rdson High-side MOSFET and 70mΩ RdsonLow-side MOSFET
■1uA Shut-down Current
■20uA Ultra Low Quiescent Current
■1.1MHz Switching Frequency with ±6% Frequency Spread Spectrum FSS Modulation
■80ns Minimum On-time
■Precision Enable Threshold for Programmable UVLO Threshold and Hysteresis
■Low Drop-Out LDO Operation
■Pulse Skipping Modulation PSM in Light Load
■4msBuilt-in Soft-start Time
■Thermal Shutdown Protectionat 160°C
■Available in TSOT23-6L Package
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SCT2325 、 SCT2323 、 SCT2323TVB 、 SCT2325TVB 、 SCT2325TVBR 、 SCT2323TVBR 、 SCT2320 、 SCT2330 、 SCT2321 、 SCT2331 |
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Synchronous Step-down DC DC Converter 、 synchronous buck converters |
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[ White Goods ][ Air Conditioner ][ Refrigerator ][ Home Appliance ][ Surveillance ][ Audio ][ WiFi Speaker ][ Printer ][ DTV ][ STB ][ Monitor/LCD Display ][ E-meter ] |
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Datasheet |
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Please see the document for details |
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TSOT23-6L;TSOT23-6 |
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English Chinese Chinese and English Japanese |
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2021/07/29 |
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1.5 MB |
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