The JTMA7073 JTMA7073A JTMA7074 is a voltage mode, synchron

1.产品概述 2.产品特点 3.应用范围 4.下载产品资料PDF文档
5.产品封装图 6.电路原理图 7.功能概述 8.相关产品

一,产品概述(General Description)
The JTMA7073 is a voltage mode, synchronous PWM controller which
drives dual N-channel MOSFETs. The device integrates all of the control, monitoring and protecting functions into a single package, provides
one controlled power output with under-voltage and over-current protections.
The JTMA7073 provides excellent regulation for output load variation. The
internal 0.6V temperature-compensated reference voltage is designed to
meet the requirement of low output voltage applications. The device includes
a 200kHz free-running triangle-wave oscillator that is adjustable from 50kHz to 1000kHz.
The JTMA7073 has been equipped with excellent protec-tion functions: POR, OCP, and UVP. The Power-On-Re-set (POR) circuit can monitor the VCC, EN, and OCSET voltage to make sure the supply voltage exceeds their threshold voltage while the controller is running. The Over-Current Protection (OCP) monitors the output cur-rent by using the voltage drop across the upper MOSFET’s RDS(ON). When the output current reaches the trip point, the

controller will run the soft-start function until the fault events are removed. The Under-Voltage Protection (UVP)monitors the voltage at FB pin (V FB) for short-circuit protection. When the VFB is less than 50% of VREF, the controller will shutdown the IC directly.

二.产品特点(Features)
1.)Single 12V Power Supply Required
2.)0.6V Reference with 1% Accuracy
3.)Shutdown and Soft-Start Function
4.)1.)Programmable Frequency Range from 50 kHz to 1000kHz
5.)Voltage Mode PWM Control Design
6.)Up to 100% Duty Cycle
7.)Under-Voltage Protection (UVP)
8.)Over-Current Protection (OCP) SOP-14 Package
9.)Lead Free and Green Devices Available (RoHS Compliant)

三,应用范围 (Applications)
Graphic Cards

四.下载产品资料PDF文档

JTMA7073