EC1745N

General Description

EC1745NN 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 4.5V to

30V.This IC can operate in both Constant Current (CC) and Constant Voltage (CV) modes.
EC1745NN operates as a Buck Circuit providing a wide range of outputs at Constant Voltage (CV)
from 4.5V to 30V and the output current as high as 6A or above. It has a Constant Current (CC)
mode so that output current can be set externally and at an accuracy of ±4%.
The current mode control and external compensation makes feedback control have good line and
load regulation with flexible external design.
General Description
 Vin: 4.5V 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 Frequency: 375k+75k
 Integrated Power MOSFET
 QFN32L Package
General Description
 USB Power Supplies with PD
 High-Brightness Lighting
 General-Purpose DC/DC Application
General Description


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規格是死的,設計是活的
我們提供具有靈活彈性的客製化IC與模組設計

告訴我們你想做的產品項目吧!