TD1745A 30Vin 6A 2-Outputs Buck Converter

TD1745A 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.
TD1745A 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.

Features
 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
Applications
 USB Power Supplies with PD
 High-Brightness Lighting
 General-Purpose DC/DC Application

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