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SD4843P Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
SD4843PSL4001Yes

SD4843P is a power switch IC manufactured by SL (ShunLei).

The SD4843P is a power switch IC manufactured by SL (ShunLei).

Specifications:

  • Input Voltage Range: 4.5V to 40V
  • Output Current: Up to 3A
  • On-Resistance (RDS(ON)): 80mΩ (typical)
  • Switching Frequency: Adjustable (typically 100kHz to 1MHz)
  • Protection Features: Over-current protection (OCP), thermal shutdown (TSD), under-voltage lockout (UVLO)
  • Operating Temperature Range: -40°C to +125°C
  • Package Type: SOP-8

Descriptions:

The SD4843P is a high-efficiency, synchronous step-down DC-DC converter with integrated power MOSFETs. It is designed for applications requiring high power density and efficiency, such as industrial, automotive, and consumer electronics.

Features:

  • Wide Input Voltage Range: Supports 4.5V to 40V operation
  • High Efficiency: Up to 95% efficiency with synchronous rectification
  • Adjustable Output Voltage: Via external resistor divider
  • Integrated MOSFETs: Reduces external component count
  • Soft-Start Function: Prevents inrush current
  • Low Quiescent Current: Improves light-load efficiency
  • Compact Package: SOP-8 for space-constrained designs

This IC is commonly used in power supplies, battery chargers, LED drivers, and other DC-DC conversion applications.

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