Silergy SY20845A
The SY20845A is a programmable current limit switch with input voltage range selection and output voltage clamping. The programmable soft-start time controls the slew rate of the output voltage during the start-up time. The SY20845A uses an enable control for system sequencing.GENERAL DESCRIPTION
Extremely low RDS(ON) of the integrated protection N-channel MOSFET helps to reduce power loss during normal operation. The programmable current limit can be configured using an external resistor. The device integrates short-circuit and overtemperature protections. The SY20845A is available in a compact DFN 3mmx3mm-10pin package.FEATURES
● Input Voltage Range: 2.5V to 15V with Surge Up to 30V● Programmable Current Limit
● Low RDS(ON) for the Integrated Protection Switch: 40 mΩ
● Programmable Soft-Start Time
● Short Circuit Protection
● Selectable Input Range and Clamping Output Voltage Threshold.
● Enable Interface Pin
● Thermal Shutdown Protection & Auto Recovery
● RoHS Compliant and Halogen Free
● Compact Package: DFN3×3-10
APPLICATIONS
● Notebook PCs● Servers
● Service PCs Typical Application Circuit VIN 2.5-15V CIN 10uF ON/OFF RVCP 10kΩ 1 IN 2 IN 3 IN 7 EN 4 VCP SY20845A GND OUT 10 OUT 9 OUT 8 5 ILIM SST 6 CSST 0.1uF Figure 1. Schematic Diagram COUT 10uF VOUT RILIM 2.2kΩ DS_SY20845A Rev.