TD1489中文資料泰德數(shù)據(jù)手冊(cè)PDF規(guī)格書

General Description

TD1489 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 40V.This IC can operate in both Constant

Current (CC) and Constant Voltage (CV) modes.

TD1489 operates as a Buck Circuit providing a wide range of

outputs at Constant Voltage (CV) from 4.7V to 40V 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: 4.7V to 40V

? Vout: 1.2V to Vin*97%V; typical at 5V

? 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: 125k+25k

? Integrated Power MOSFET

? QFN32L Package

Applications

? Car Charger

? High-Brightness Lighting

? General-Purpose DC/DC Application