深圳市科瑞芯电子有限公司为TECHCODE/泰德的方案合作商，商品原厂原装

供应单降压电压模式PWM控制器，可为终端客户提供样品及技术支持！

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型号：TD1720

封装：SOP-8P/TDFN3x3-10

品牌：TECHCODE/泰德

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General Description

The TD1720 is a voltage mode, fixed 300kHz switchingfrequency, synchronous buck converter.   The TD1720 allowswide input voltage that is either a single 5~12V or two supplyvoltage(s) for various applications.   A power-on-reset (POR)circuit monitors the VCC supply voltage to prevent wronglogic controls.   A builtin soft-start circuit prevents the outputvoltages from overshoot as well as limits the input current.  An internal 0.8V temperature-compensated referencevoltage with high accuracy is designed to meet therequirement of low output voltage applications.   The TD1720provides excellent output voltage regulations against loadcurrentvariation.  The controller’s over-current protection monitors the outputcurrent by using the voltage drop across the RDS(ON) oflow-side MOSFET, eliminating the need for a current sensingresistor that features high efficiency and low cost.   In addition,the TD1720 also integrates excellent protection functions:The over-voltage protection (OVP) , under- voltage protection(UVP).   OVP circuit which monitors the FB voltage to preventthe PWM output from overvoltage,and UVP circuit whichmonitors the FB voltage to prevent the PWM output fromunder-voltage or short-circuit.  The TD1720 is available inSOP-8P and TDFN3x3-10 packages.

Features

● Wide 5V to 12V Supply Voltage

● Power-On-Reset Monitoring on VcC

● Excellent Output VoltageRegulations 0.8V Internal Reference ±1% Over-Temperature Range

● Integrated Soft-Start

● Voltage Mode PWM Operation with External Compensation

● Up to 90% Duty Ratio for Fast Transient Response

● Constant Switching Frequency300kHz±10%

● Drive Dual Low Cost N-MOSFETs with Adaptive Dead-Time Control

● 50% Under-Voltage Protection

● 125% Over-Voltage Protection

● Adjustable Over-Current Protection Threshold Using the RDS(ON) of Low-Side MOSFET

● Shutdown Control by COMP

● Power Good Monitoring (TDFN-10 3mmx3mm Package Only)

● SOP-8P and TDFN3x3-10 Packages

● Lead Free and Green Devices Available (RoHS Compliant)

Applications

● Graphic Cards

● DSL,Switch HUB

● Wireless Lan

● Notebook Computer

● Mother Board

● LCD Monitor/TV

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