JTM1484A 12V&24V输入 5V3A输出车充方案(3A 27V Synchronous Buck C

一,目录
1.产品概述         2.产品特点
3.应用范围                       4.产品封装图
5 产品PCB                      6.电路原理图
7.产品BOM                       8产品PDF文档
9.产品设计概述

二,产品概述(General Description)
       The JTM1484A is a monolithic synchronous buck regulator. The device integrates 90 mΩ MOSFETS that provide 3A continuous load   current over a wide operating input voltage   of 4.5V to 27V. Current mode control
provides fast transient response and cycle-by-cycle current limit. An adjustable soft-start prevents inrush current at turn on.

三,.产品特点(Features)

1.)3A Output Current
2.)Wide 4.5V to 27V Operating Input Range
3.)Fixed 340KHZ Frequency
4.)Integrated Power MOSFET switches
5.)Output Adjustable from 0.925V to 0.8Vin
6.)Up to 93% Efficiency
7.)Programmable Soft-Start
8.)Stable with Low ESR Ceramic Output
9.)Capacitors
10.)Cycle by Cycle Over Current Protection
11)Short Circuit Protection
12.)Input Under Voltage Lockout
13.)Package： ESOP-8L

四,应用范围 (Applications)
1.)Distributed Power Systems
2.)Networking Systems
3.)Green Electronics/ Appliances
4.)Notebook Computers
5.)FPGA, DSP, ASIC Power Supplies

五,产品封装图 (Package)

六,电路原理图

七5 产品PCB

		位号	用量	单位
1	贴片电阻10K SMD0805	Rcom	1	PCS
2	贴片电阻10K SMD0805	R2	1	PCS
3	贴片电感10UH D8*8mm	L1	1	PCS
4	贴片电阻45K SMD0805	R1	1	PCS
5	贴片电阻100K SMD0805	REN	1	PCS
6	电解电容100UF/16V	C3	1	PCS
7	电解电容100UF/25V	C1	1	PCS
8	贴片电容103/50V SMD0805	Cbst	1	PCS
9	贴片电容104/50V SMD0805	Cs	1	PCS
10	贴片电容104/50V SMD0805	C4	1	PCS
11	贴片电容104/50V SMD0805	C2	1	PCS
12	贴片电容222/50V SMD0805	Ccomp	1	PCS
13	3PIN排针脚距2.54mm	CON1	1	PCS
14	同步降压IC JTM1484A SOO8-PP	U1	1	PCS
15	PCB板双面玻纤 30401.6mm		1	PCS

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JTM1484A 12V&24V输入 5V3A输出 车充方案(3A 27V Synchronous Buck C

JTM1484A 12V&24V输入 5V3A输出车充方案(3A 27V Synchronous Buck C