E-CMOS EC1745
EC1745 is a Synchronous Buck Circuit with two current sense pins suitable for many multi output applications. It is designed to allow for operating a wide supply voltage range from 4.7V to 30V.This IC can operate in both Constant Current (CC) and Constant Voltage (CV) modes. It has a Constant Current (CC) mode so that output current can be set externally and at an accuracy of ±4%.GENERAL DESCRIPTION
EC1745 is a Synchronous Buck Circuit with two current sense pins suitable for many multioutput applications. EC1745 operates as a Buck Circuit providing a wide range of outputs at Constant Voltage (CV) from 4.7V to 30V and the output current as high as 5A or above. The current mode control and external compensation makes feedback control have good line and load regulation with flexible external design.FEATURES
●Vin: 4.2V to 30V●Vout: 3V to 28V; typical at 5V
●Low Dropout Operation: Maximum Duty Cycle at 99.5%
●Precision CC/CV Mode Control
●Burst/PFM Mode for Increased Light Load Efficiency
●2 outputs independent Constant Current setting
●Hiccup mode when output voltage below 50% normal output voltage
●Protection: NMOS peak current limit: accuracy:~20%Output short protection: reduce input current to less than 20mA (RMS) Output FB OVP (125% VFB), only turn off High side MOS. Temperature shutdown (OTP)
●Adjustable Output Cable Resistance Compensation
●Switching Freq...