The JTM9801 also provides a sophist icated range of protecti

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

一,产品概述(General Description)
      The document describes a high efAficiency LED driver designed to drive an LED driver at a current of 300mA from an input voltage range of 12 VDC to 80 VDC, output support 1~8 series 1W LED.
     The JTM9801 also provides a sophist icated range of protection features including auto-restart for control loop open/short faults and output short-circuit conditions. Accurate hysteretic thermal shutdown ensures safe average PCB temperatures under all conditions. Design with very low parts count.
      This document contains the converter specification, schematic, PCB diagram, bill of materials.
   The JTM9801 is a monolithic high voltage switching regulator with PFM that is
specifically designed to operate from a 12V~80V DC power supply.
    The JTM9801 is a high efficiency LED driver switching regulator. The LED string is driven
at DC constant current rather than constant voltage, thus providing constant light output
and enhanced reliability.
二.产品特点(Features)
Operation Voltage DC 12V~80V.
0.1V current sense voltage reference.
Directly drive 1~8 Series 1W LED.
Excellent line and load regulation.
Internal Optimize Power HV-MOSFET.
Built in Thermal Shutdown Function.
Built in Current Limiting Function.
Built in Soft-Start Circuit.
Available in SOIC-8 package.
Up to 97% efficiency.

三,应用范围 (Applications)
LED Lighting & LED LAMP
General purpose LED lighting

四,产品封装图 (Package)

Pin Number	Pin Name	Description
1	START	Internal soft start Pin.
2	VREG	Internal Voltage Regulation Pin. (The VREG is about 8V)
3,4	CSP	Current Sense Positive Pin. (The current sense voltage is 0.1V)
5,6	VIN	Input high voltage Pin. (Operation voltage 12V~80V)
7,8	CSN	Current Sense Negative Pin.

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