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DC-DC Buck Converter
DC-DC Buck Converter
SCT2140QFSAR
Pre-release
2.7V-6V Vin 4A Synchronous Step Down Convertor
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- Product Introduction
- Technical data
- Parameter comparison
Product Features
FEATURES:
• Qualified for Automotive Applications
• AEC-Q100 Qualified with the Following Results:
- Device Temperature Grade 1
Ambient Operating Temperature Range
- Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C3B
• Input Voltage Range: 2.7V-6V
• Up to 4A Continuous Output Current
• 43μA Quiescent Current
• 0.6V±1% Feedback Reference Voltage
• Integrated 14mΩ High-Side and 9mΩ Low-Side Power MOSFETs
• Adjustable1.2MHz~4MHz Switching Frequencies
• Integrated Frequency Dither for EMI Mitigation
• Selectable PFM or FCCM Operation
• Active output discharge
• Programmable Soft Start Time
• Power Good Indicator
• Integrated Protection Feature
- Cycle-by-cycle current limit
- Under-voltage Lockout
- HICCUP Over Current Protection
- Thermal Shutdown Protection:170°C
• QFN-9L 2mm*3mm Package
• Available in a Wettable Flank Package
DESCRIPTION:
APPLICATIONS:
• AEC-Q100 Qualified with the Following Results:
- Device Temperature Grade 1
Ambient Operating Temperature Range
- Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C3B
• Input Voltage Range: 2.7V-6V
• Up to 4A Continuous Output Current
• 43μA Quiescent Current
• 0.6V±1% Feedback Reference Voltage
• Integrated 14mΩ High-Side and 9mΩ Low-Side Power MOSFETs
• Adjustable1.2MHz~4MHz Switching Frequencies
• Integrated Frequency Dither for EMI Mitigation
• Selectable PFM or FCCM Operation
• Active output discharge
• Programmable Soft Start Time
• Power Good Indicator
• Integrated Protection Feature
- Cycle-by-cycle current limit
- Under-voltage Lockout
- HICCUP Over Current Protection
- Thermal Shutdown Protection:170°C
• QFN-9L 2mm*3mm Package
• Available in a Wettable Flank Package
DESCRIPTION:
The SCT2140Q is a monolithic, step-down switchmode converter with built-in internal 14mΩ High-Side and 9mΩ Low-Side Power MOSFETs. The device achieves 4A of continuous output current from a 2.7V to 6V input voltage range, with excellent load and line regulation. The output voltage can be regulated to as low as 0.6V. The SCT2140Q, adopting the constant-on time (COT) mode control provides fast transient response and eases loop stabilization, greatly simplifies the converter off-chip configuration. The switching clock frequency can be programmed from 1.2MHz to 4MHz
for optimization of the filter size and output voltage ripple. The SCT2140Q features programmable soft-start time to avoid large inrush current and output voltage overshoot during startup. The SCT2140Q has MODE pin to select Pulse Frequency Modulation (PFM) operation mode to achieve the light load power save or Forced Continuous Conduction Mode (FCCM) to achieve low light load ripple. It includes full protection features, such as cycle-bycycle current limit and hiccup over current protection, output under-voltage protection, input under-voltage lockout, and thermal shutdown. The SCT2140Q requires a minimal number of external components and is available in a spacesaving QFN-9L 2mm*3mm package with Wettable Flank.
APPLICATIONS:
• Automotive Infotainment
• Advanced Driver Assistance System(ADAS)
• Solid state driver
Package information
Technical data
| Title | Time | Download |
|---|---|---|
| SCT2140Q datasheet Rev 0.8 | 2026-11-09 |
 Download
|
Parameter comparison
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