SA24491 Overview
Description
The SA2449x is a high-efficiency synchronous step-down DC-DC converter capable of delivering a load current of 1A/2A/3A. It operates over a wide input voltage range of 4.5V to 36V and integrates main and synchronous MOSFET switches with very low RDS(ON) to minimize conduction loss.
Key Features
- Low RDS(ON) for Internal Switches (Top/Bottom): 130/75mΩ
- 4.5-36V Input Voltage Range
- Low quiescent current: IQ = 18 µA (Typ.)
- Internal Compensation
- Internal 1ms Soft-start Limits the Inrush Current
- Adjustable Switching Frequency Range: 300kHz to 2.2MHz
- Light Load Operating Mode
- SA24491/SA24492/SA24493/SA24493L: PFM
- SA24493E: FCCM
- Output Current Capability
