The STw4141 is a single coil dual output synchronous step down DC/DC converter from STMicroelectonics. It is mainly used for digital baseband and multimedia processor power supply. The product adopts fixed frequency PWM control mode, with high efficiency, low power consumption, high accuracy and good linear performance.
The STw4141 is a single coil dual output switching converter designed for digital core and I/O supply in applications such as mobile phones, PDAs, and digital still cameras. It features a wide input voltage range of 2.7 V to 5.5 V and offers high efficiency with up to 92% conversion efficiency. The device operates at a fixed 900 kHz frequency in PWM mode and can switch to PFM mode at light loads to maintain efficiency.
| Input Voltage Range | 2.7 V to 5.5 V |
|---|---|
| Output Current 1 (I/O) | 200 mA |
| Output Current 2 (CPU CORE) | 400 mA |
| Maximum Efficiency | 92 % |
| Switching Frequency | 900 kHz |
| Operating Temperature Range | -40 to 85 C |
| Maximum Junction Temperature | 150 C |
| Shutdown Current | < 1 uA |
The device operates at a fixed 900 kHz switching frequency in PWM mode.
Yes, the MODE/SYNC input pin allows synchronization from 600 kHz to 1.5 MHz.
The device supports various configurations, including 1.8V/1.2V/1.0V and 1.8V/1.3V/1.0V combinations.