Description
General .
The SY21051 high-efficiency synchronous Buck converter can deliver 1A output current over a wide input voltage range from 7V to 100V.
Features
* Low RDS(ON) for Internal MOSFETs: 500mΩ Top, 240mΩ Bottom
* 7V to 100V Input Voltage Range
* Up to 1A Output Current Capability
* Adjustable Switching Frequency
* COT Ripple-Based Control to Achieve Fast Transient
Responses
* 2ms Internal Soft-start Limits the Inrush Curren
Applications
* Non-Isolated Telecommunication Buck Regulator
* Secondary High Voltage Post Regulator
* Automotive Systems
Typical Applications
VIN
CIN
RRON
ON/OFF
IN RON EN GND
BS LX FB VCC
CBS L
D CVCC
RH CFF
RL
Figure 1.Typical Application Circuit
VOUT
COUT
Efficiency (%)
Efficiency vs.