The JTM9803,JTM9801 is a monolithic high voltage Switching r

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 JTM9803 is a monolithic high voltage Switching regulator with PFM that is
specifically designed to operate from a 24V~80V DC supply.
       The JTM9803 is a high efficiency LED driver switching regulator. The LED string is driven at DC constant current rather than constant voltage, thus providing constant current output and enhanced reliability

二.产品特点(Features)
1.)Wide 24V to 80V Input Voltage Range
2.)0.2V current sense voltage reference
3.)Directly drive 3~8 series 1W LED.
4.)Excellent line and load regulation.
5.)High efficiency up to 96%.
6.)Internal optimize power HV-MOSFET.
7.)Built in thermal shutdown function.
8.)Built in UVLO function.
9.)Built in current limiting function.
10.)Built in LED open & short protection.
11.)Built in soft-start circuit.
12.)Available in SOIC-8 package

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

四.下载产品资料PDF文档

JTM9803

五,产品封装图 (Package)

Pin Number	Pin Name	Description
1	NC	No Connected.
2	VDD	The chip supply voltage.
3	CSP	Current Sense Positive Terminal.
4	SW	Output Switching Pin
5, 6	VIN	Input high voltage Pin. (Operation voltage 24V~ 80V)
7, 8	CSN	Current Sense Negative Terminal.

六.电路原理图

七,功能概述

Parameter	Symbol	Value	Unit
Input Voltage	Vin	-0.3 to 90	V
Power Dissipation	PD	Internally limited	mW
Thermal Resistance (SOP-8L) (Junction to Ambient, No Heatsink, Free Air)	RJA	100	ºC/W
Operating Junction Temperature	TJ	-40 to 125	ºC
Storage Temperature	TSTG	-65 to 150	ºC
Lead Temperature (Soldering, 10 sec)	TLEAD	260	ºC
ESD (HBM)		3000	V

八,相关产品

升压型LED射灯驱动IC

型号	工作电压范围	输出电流	输出	线性	效率	工作频率	调光功能	封装	替代型号
型号	工作电压范围	输出电流	电流精度	调整率	效率	工作频率	调光功能	封装	替代型号
JTM2803	0.9V-6.0V	1A	-	-	90%	1.0 MHz	PWM调光	SOT-26	PAM2803
JTM5663	3V-24V	内置2A MOS	2%	-	90%	1.2MHz	PWM调光	SOT-26	SY7200/1
JTM9293C	2.5V-5.5V	内置2A MOS	2%	-	90%	1.2MHz	PWM调光	SOT-26
JTM6281	3.6V-26V	2A	2%		92%	400KHz	PWM调光	SOP-8
JTM6283	3.6V-26V	2A	2%		92%	400KHz	PWM调光	SOP-8
JTM6283B	5V-45V	2A	2%		93%	400KHz	PWM调光	SOP-8
JTM6285	3.6V-36V	4A	2%		94%	180KHz	PWM调光	TO252-5L
JTM6286	5.0V-36V	5A	2%		94%	180KHz	PWM调光	TO252-5L

升降压型LED射灯驱动IC

型号	工作电压范围	输出电流	输出	效率	工作频率	调光功能	封装	替代型号
型号	工作电压范围	输出电流	电流精度	效率	工作频率	调光功能	封装	替代型号
JTM3441	2.2V-5.0V	0.7A	3%	95%	1.15MKHz	PWM调光	MSOP-10	LTC3454
JTM6281	3.6V-26V	2A	2%	92%	400KHz	PWM调光	SOP-8
JTM6283	3.6V-26V	2A	2%	92%	400KHz	PWM调光	SOP-8
JTM6283B	5V-45V	2A	2%	93%	400KHz	PWM调光	SOP-8
JTM6285	3.6V-36V	4A	2%	94%	180KHz	PWM调光	TO-252-5L
JTM6286	5.0V-36V	5A	2%	94%	180KHz	PWM调光	TO-252-5L


型号	工作电压	恒流值	工作电流	压差	工作结温	封装	直接替换
JTM71XX	2.7-7V	260/280/300/320/350mA	90uA	130mV	-125	SOT-89	QX7135-XX
JTM7136	2.7-18V/输入端可接高压	10mA-扩流2.5A	80uA	50mV	-165	SOT-89-5	QX7136
JTM7137	2.7-5.5V/输入端可接400V高压	扩流100mA-3A	26uA	150mV	-105	SOT-25
JTM7138	3.0-6.0V/输入端可接400V高压	扩流20mA-3A	85uA	250mV	-20-85	SOT-25
JTM7139	2.8-6.5V	30mA--1.5A	175uA	350mV	45	SOP-8


型号	工作电压	输出电流	开关频率	启动电压	封装	替代型号
JTM6203B	0.9V-1.5V	60mA		0.9V	SOT-23	QX5231
JTM6004	1.8V-3.2V	280mA	900KHz	1.8V	SOT-23	兼容QX5237
JTM6205	1.0V-1.5V	130mA	600KHz	1.0V	SOT-89
JTM6002A	1.0V-3.3V	500mA	350KHz	1.0V	SOT-89	兼容QX5235
JTM5103	2.1V-6.0V	扩流3A		2.1V	SOT-25
JTM6105	2.1V-6.0V	2A		2.1V	SOP-8
JTM6106	2.8V-6.0V	1.5A可调		2.8V	SOP-8

型号	工作电压范围	输出电流	输出电流精度	效率	工作频率	封装
JTM9801	12V--80V	0.5A	2%	97%	80KHz	SOP-8
JTM9803	24V--80V	0.5A	2%	96%	80KHz	SOP-8
JTM9805	24V--100V	0.5A	2%	95%	127KHz	SOP-8
JTM9804	24V--80V	1A	2%	96%	70KHz	TO252-5L
JTM9802	12V--80V	1A	2%	98%	80KHz	TO263-5L