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DC-DC Buck Converter
DC-DC Buck Converter
SCT2461MQFNFR
Pre-release
3.5V-36V Vin, 6A, High Efficiency Synchronous Step-down DCDC Converter
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- Product Introduction
- Technical data
- Parameter comparison
Product Features
FEATURES：
• AEC-Q100 Qualified with the Following Results:
- Device Temperature Grade 1: -40°C to 125°C
Ambient Operating Temperature Range
• Wide Input Range: 3.5V-36V
• Up to 6A Continuous Output Current
• 0.8V Feedback Reference Voltage
• Integrated 30mΩ High-Side and 18mΩ Low-Side Power MOSFETs
• 13uA Quiescent Current with VBIAS Connected to an auxiliary power supply to 5V
• 60ns Minimum On-time
• 4ms Internal Soft-start Time
• Adjustable Frequency 200KHz to 2.1MHz
• External Clock Synchronization
• Frequency Spread Spectrum (FSS) Modulation for EMI Reduction
• External bias option for improved efficiency
• Parallel input path to minimize switch node ringing
• Low Dropout Mode Operation
• Over-voltage and Over-Temperature Protection
• Internally integrated input bypass capacitor
• Available in 4mm*4mm FCQFN-14L Package
DESCRIPTION：
The SCT2461MQ is 6A synchronous buck converters with wide input voltage, ranging from 3.5V to 36V, which integrates a 30mΩ high-side MOSFET and a 18mΩ low-side MOSFET. The SCT2461MQ, adopting the peak current mode control, supports the Pulse Skipping Modulation (PSM) with typical 13uA (VBIAS=5V) low quiescent current which assists the converter on achieving high efficiency at light load or standby condition.
The SCT2461MQ features adjustable switching frequency from 200 kHz to 2.1MHz with an external resistor, which provides the flexibility to optimize either efficiency or external component size. The converter supports external clock synchronization with a frequency band from 200kHz to 2.1MHz. The SCT2461MQ allows power conversion from high input voltage to low output voltage with a minimum 60ns ontime of high-side MOSFET. The SCT2461MQ is an Electromagnetic Interference (EMI) friendly buck converter with implementing optimized design for EMI reduction. The SCT2461MQ features Frequency Spread Spectrum FSS with ±6% jittering span of switching frequency and modulation rate 1/512 of switching frequency to reduce the conducted EMI. The SCT2461MQ offers cycle-by-cycle current limit and hiccup over current protection, thermal shutdown
protection, output over-voltage protection and input voltage under-voltage protection. The device is available in 4mm*4mm FCQFN-14L package.
APPLICATIONS：
- Automotive infotainment and ADAS
- USB Type-C Power Delivery, USB Charging
- Industrial and Medical Distributed Power Supplies
Package information
Technical data
| Title | Time | Download |
|---|---|---|
| SCT2461MQ Datasheet Rev.0.83 | 2026-08-31 |
 Download
|
Parameter comparison
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