The JTMX8915 is a monolithic high voltage switching regulato

1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（产品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 JTMX8915 is a monolithic high voltage switching regulator with
PFM that is specifically designed to operate from a 24V~100V DC supply.
The JTMX8915 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)

Wide 24V to 100V Input Voltage Range
0.2V current sense voltage reference.
Directly drive 3~8 series 1W LED.
Excellent line and load regulation.
High efficiency up to 96%.
Minimum Drop Out 6V.
Internal optimize power HV-MOSFET.
Built in thermal shutdown function.
Built in UVLO function.
Built in current limiting function.
Built in LED open & short protection.
Built in soft-start circuit.
Available in SOP8L package.

三,应用范围 (Applications)

EBIKE LED Lighting
LED Lighting & LED LAMP
General purpose lighting

四.技术规格书下载（产品PDF）

JTMX9815

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~ 100V)
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 120	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,相关芯片选择指南

JTMX8912	12V ~ 80V	1~18LED串	1A	PFM	Adj (0.1V)	TO263-5L
JTMX8913	24V ~ 80V	3~14LED串	1A	PFM	Adj (0.2V)	TO252-5L
JTMX8915	24V ~ 100V	3~8LED串	0.5A	PFM	Adj (0.2V)	SOP8L

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