Silergy SY21142
The SY21142 high-efficiency asynchronous Buck converter can deliver 2A output current over a wide input voltage range from 4.5V to 60V. The SY21142 employs a constant off-time and peak current mode control strategy to achieve fast transient responses. It integrates a main switch with low RDS(ON) to minimize conduction loss.| Part No. | SY21142 |
|---|---|
| Datasheet | SY21142 Download |
| Manufacturer |  Silergy |
| Description | Asynchronous Buck Converter |
| Buy | Stock & Price |
GENERAL DESCRIPTION
The adjustable switching frequency permits low output voltage ripple and reduces external inductor and capacitor sizes. The SY21142 also provides cycle-by-cycle peak current limiting, over temperature protection, and output short circuit protection. The SY21142 is available in a compact SO8E package.FEATURES
● Low RDS(ON) for Internal N-channel Power FET: 175mΩ● 4.5V to 60V Input Voltage Range
● Up to 2A Output Current
● Adjustable Switching Frequency Range: 100kHz to 1MHz
● Constant Off-Time and Peak Current Mode Control
● Internal Soft-Start Limits Inrush Current
● ±1% 0.8V Reference
● EN ON/OFF Control with Accurate Threshold
● Hiccup Mode Output Short Circuit Protection
● Cycle-by-Cycle Peak Current Limit
● Over Temperature Protection
● RoHS-Compliant and Halogen-Free
● Compact SO8E Package
APPLICATIONS
● Non-Isolated Telecommunication Buck Regulator● Secondary High-Voltage Post Regulator
● Automotive Systems
● Electric Bicycle Typical Application CBS VIN : 4.5V ~ 60V BS L IN LX RPG D RH CIN PG FB RL EN FS ON/OFF GND RFS Figure 1.
