一,产品概述(General Description)  
     The JTM1483 is a synchronous step down regulator from a high voltage input supply.
     Operating with an input voltage range from 8V to 30V, the JTM1483 achieves 2A continuous output current with excellent load and line regulation. The switching frequency is programmable from 100kHz to 500 kHz and the synchronous architecture provides for highly efficient designs. Current mode operation
provides fast transient response and eases loop stabilization.
    The JTM1483 requires a minimum number of readily available standard external components. Other features include cable compensation,programmable current limit and thermal shutdown.
   The JTM1483 converters are available in the industry standard SOP8-PP packages
 
      
二.产品特点(Features)

• Wide Input Voltage Range: 8V～30V
  Up to 93% Efficiency
  Programmable Switching Frequency up to up to 500kHz
  No Loop Compensation Required
  Programmable Current Limit
  Cable Compensation from 0Ω to 0.3Ω
  Thermal Shutdown
  Available in SOP8-PP Package

三,应用范围 (Applications)
 
四,产品封装图 (Package)

PIN	NAME	DESCRIPTION
1	FB	Feedback
2	RT	Frequency Setting
3	ILIM	Current Limit
4	VIN	Input Supply Voltage
5, 6	SW	Switch Node
7, 8	GND	Ground

五,电路原理图

六, 产品PCB
(略)
七.产品BOM  
  (略)
八.产品PDF文档 

JTM1483

九,功能概述
 
Input Supply Voltage ....................................................................................................-0.3V ～ 35V
FB, ILIM, RT Voltages.................................................................................................... -0.3V ～ 6V
SW Voltage ........................................................................................................-0.3V ～ (VIN + 1V)
Operating Temperature Range (Note 2)………...………………………………………-40℃ ～ +85℃
Storage Temperature Range.................................................................................. -65℃ ～ +150℃
Junction Temperature Range………………………………………………...……………..……...+150℃
Lead Temperature (Soldering, 10 sec.).................................................................................. +265℃


十,相关产品

高压同步DC-DC降压IC
型号	输入耐压	输出电压	输出	反馈	工作	效率	静态	待机	封装	直接替换
			电流	电压	频率		工作电流	电流
JTM1482	4.6-22V	可调输出	2.0A	0.923V	340K	94%	55uA	1uA	SOP-8	MP1482/ZT7182/LSP5502
MP1482										EUP3482/AS5422/AME5269
JTM1482A	4.5-27V	可调输出	2.0A	0.925V	340K	96%	1.3mA	0.3uA	SOP-8	MP1482/ZT7182/LSP5502
										EUP3482/AS5422/AME5269
JTM1484	4.6-22V	可调输出	3.0A	0.923V	340K	95%	55uA	1uA	ESOP8	MP1484/MP2307/APW7174/EUP3484
MP1484										EUP3476/RT8272/AS5430/RT8250
JTM1484A	4.5-27V	可调输出	3.0A	0.925V	340K	93%	1.3mA	0.3uA	ESOP8	MP1484/MP2307/APW7174/EUP3484
										EUP3476/RT8272/AS5430/RT8250
JTM1486	3.6-40V	可调输出	2.0A	0.8V	440K	94%	74uA	0.07uA	ESOP-8
JTM1488	4.5-20V	可调输出	4.0A	0.923V	340KHz	95%	1.6mA	6uA	ESOP8	MP1484/MP2307/APW7174/EUP3484
										EUP3476/RT8272/AS5430/RT8250
JTM2259	4.5-16V	可调输出	2.0A	0.6V	600K	96%	400uA	1uA	SOT-26	MP2259/MP2359/ACT4088
										MP28367/RT8259
JTM2359	4.5-26V	可调输出	1.2A	0.8V	1.4M	94%	600uA	1uA	SOT-26	MP2359/MP2259/ACT4088
										MP28367/RT8259
JTM2459	4.0-42V	可调输出	1.5A	0.8V	650K	91%	600uA	6uA	SOT-26	MP2359/MP2259/ACT4088
										MP28367/RT8259