目录
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PCB                   
7.产品BOM                       8.产品PDF文档 
9.功能概述

一,产品概述(General Description) 
   221024A01 是为产品 JTM6298 制作的演示板，用于 DC10~22V 输入，输出 24V，输出最大 0.8A 的应用演示，最高转换效率可以达到 94%以上。
     JTM6298 是开关升降压型 DC-DC 转换芯片；固定开关频率 400KHz，可减小外部元器件尺寸。芯片具有出色的线性调整率与负载调整率，最大输出电压支持可达 60V。芯片内部集成过流保护、过温保护、SW 过压保护等可靠性模块。
    JTM6298 为 TO252-5L 封装，采用标准外部元器件，应用灵活   
二.产品特点(Features)
Wide 3.6V to 32V Input Voltage Range
Positive or Negative Output Voltage
Programming with a Single Feedback Pin
Current Mode Control Provides Excellent
Transient Response
1.25V reference adjustable version
Fixed 400KHz Switching Frequency
Maximum 3A Switching Current
SW PIN Built in Over Voltage Protection
Excellent line and load regulation
EN PIN TTL shutdown capability
Internal Optimize Power MOSFET
High efficiency up to 92%
Built in Frequency Compensation
Built in Soft-Start Function
Built in Thermal Shutdown Function
Built in Current Limit Function
Available in TO252-5L package
三,应用范围 (Applications)
 
1.Automotive and Industrial Boost Buck-Boost / Inverting Convertersn

2.Portable Electronic Equipment

四,产品封装图 (Package)


五,电路原理图


六, 产品PCB
(略)
七.产品BOM 
 

Item	Qty	Ref Des	Description	Mfg Part Number	Mfg
1	1	C1	1uF,50V,Ceramic,X7R,0805	C2012X7R1H105K	TDK
2	1	C2	0.1uF,100V,Ceramic,X7R,0805	C2012X7R1H104K	TDK
3	1	Cin	100uF,50V,Electrolytic	YXJ-50V-100uF	Rubycon
4	1	Cout	100uF,63V,Electrolytic	YXJ-63V-100uF	Rubycon
5	1	D1	60V,3A,Schottky Rectifier,SMC	SS36	Fairchild
6	1	DZ	10V,500mA,Zener,MINI MELE	ZMM55C10	ICM
7	1	L1	47uH,4A,Toroidal,13*7
8	1	R1	2.7KΩ,1%,1/16W,Thick Film,0603	RL0603xR-072701L	Yageo
9	1	R2	49.9KΩ,1%,1/16W,Thick Film,0603	RL0603xR-074992L	Yageo
10	1	R3	10 KΩ,1%,1/16W,Thick Film,0603	RL0603xR-071002L	Yageo
11	1	U1	BOOST DC-DC Converter,TO252-5L	JTM6298	H&M SEMI

八.产品PDF文档

JTM6298 是开关升降压型 DC-DC 转换芯片

九,功能概述
Absolute Maximum Ratings

Parameter	Symbol	Value	Unit
Input Voltage	Vin	-0.3 to 36	V
Feedback Pin Voltage	VFB	-0.3 to Vin	V
EN Pin Voltage	VEN	-0.3 to Vin	V
Output Switch Pin Voltage	VOutput	-0.3 to 60	V
Power Dissipation	PD	Internally limited	mW
Thermal Resistance (TO252-5L) (Junction to Ambient, No Heatsink, Free Air)	RJA	50	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)		>2000	V

Electrical Characteristics (DC Parameters)
Vin = 12V, GND=0V, Vin & GND parallel connect a 220uf/50V capacitor; Iout=0.5A, Ta =
25℃; the others floating unless otherwise specified.

Parameters	Symbol	Test Condition	Min.	Typ.	Max.	Unit
Input operation voltage	Vin		3.6		32	V
Shutdown Supply Current	ISTBY	VEN=0V		70	100	uA
Quiescent Supply Current	Iq	VEN =2V, VFB =Vin		2.5	5	mA
Oscillator Frequency	Fosc		320	400	480	Khz
Switch Current Limit	IL	VFB =0		3		A
Output Power NMOS	Rdson	Vin=12V, ISW=3A		110	120	mohm
EN Pin Threshold	VEN	High (Regulator ON) Low (Regulator OFF)		1.4 0.8		V
EN Pin Input Leakage Current	IH	VEN =2V (ON)		3	10	uA
	IL	VEN =0V (OFF)		3	10	uA
Max. Duty Cycle	DMAX	VFB=0V		90		%