深圳四海恒通科技是AXElite亚瑟莱特的授权代理商，代理全系列产品，部分长期备有大量现货，竭诚为您提供优惠的价格，提供样品及相应的技术支持，欢迎与我们联系。
联系电话：&sp; /&sp; 83018377&sp;&sp;&sp;公司网站：www.gofotech.com
AX3103A &sp;PWM Control 3A Step-Down Converter
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性能描述：
&sp;&sp;&sp;&sp;&sp;&sp; AX3103A consists of step-down switching regulator with PWM control. The devise include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc.
&sp;&sp;&sp;&sp;&sp;&sp; AX3103A provid low-ripple power, high efficiency, and excellent transientcharacteristics. The PWM control circuit is able to the duty ratio linearly form 0 up to 100%. This converter also contains an error amplifier circuit as well as a soft-start circuit that prevents overshoot at startup. An enable function, an over current protect function and short circuit protect function are built inside, and when OCP or SCP happens, the operation frequency will be reduced. Also, an internal compensation block is built in to minimum external component count.
&sp;&sp;&sp;&sp;&sp;&sp; With the addition of an internal P-channel Power MOS, a coil, capacitors, and a diode connected externally, the ICs can function as step-down switching regulators. They serve as ideal power supply units for portable devic when coupled with the SOP-8L package, providing such outstanding featur as low current consumption. Since this converter can accommodate an input voltage up to 23V, it is also suitable for the operation via an AC adapter.
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特点：
•&sp; Input voltage：3.6V to 23V
•&sp; Output voltage：0.8V to VCC
•&sp; Duty ratio：0% to 100% PWM control
•&sp; Oscillation frequency：500KHz t.
•&sp; Soft-start (SS), Current Limit (CL), Enable function.
•&sp; Thermal Shutdown function.
•&sp; Short Circuit Protect (SCP).
•&sp; Built-in internal SW P-channel MOS.
•&sp; Low R output capacitor (Multi-layer chip capacitor (MLCC) application.
•&sp; SOP-8L Pb-Free package
引脚图：
典型应用电路图：
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我们还为您提供AXElite亚瑟莱特以下电源管理IC及应用方案:
▲LED照明&户外显示屏&背光
＊MR16射灯/头灯/手电筒/汽车照明/红外灯板/台灯：AX2001,AX2002,AX2003,AX2005,AX2006,AX2020,AX2021
＊灯条/灯串：LED1113,AX2004
＊AC/DC隔离：AX2530(原边),AX2535(原边),AX9370(单级PFC)
＊AC/DC非隔离单级PFC：AX9310,AX9380
＊10寸以下屏背光驱动：AX2012,AX2016
＊LED户外显示屏：AX3007,AX3162,AX3514
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▲车载设备
＊车充：
* 5V/1A：AX3007,AX3010,AX3011,AX358,AX34063
* 5V/1.5A：AX3015,AX3016
* 5V/2.1A：AX3111,AX3112,AX3117
* 5V/3.1A,5V/4.2A：AX3304+AM9569
＊车载DVD/GPS：
AX3005,AX3101,AX3102,AX3103,AX3104,AX3105,AX3106,AX3107,AX3003,AX3115,AX3301,AX5110,AX5201,
AX5204,AX1007,AX66xx,AX6901
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▲数码消费产品
＊安监控设备：AX3005,AX3001,AX3022,AX3023,AX3101,AX6901,AX2002
＊DVB机顶盒：AX3001～AX3004,AX3101～AX3106,AX3512～
AX3519,AX3113,AX3301,AX1084,AX1007,AX358,AX3801,AX35xx,AX5201,AX3131
＊Protable DVD：AX3101,AX3482,AX3484，AX5201,AX5204,AX5510,AX312x
＊/EPC／MID：AX3102～AX3107,AX3113,AX3114,AX3120～AX3122,AX3512～
AX3519,AX5201,AX5204,AX5301,AX5110,AX6901,AX1007,AX1084,AX66xx,AX993,AX995,AX2012,AX2016
＊LCD-TV：AX3102～AX3107,AX3113,AX3114,AX3120～
AX3122,AX5201,AX5204,AX5301,AX358,AX1007,AX1084,AX66xx,AX6901,AX35xx,AX3801～AX3805
＊移动硬盘盒/底座：AX3101,AX3108,AX3301,AX3512,AX3513,AX1007(Vin与Vout两端的电容可以用到低
至0.1uF的MLCC)
＊SSD固态硬盘：AX351x系列（AX3512/AX3513同步降压系列产品将外置的开关元件都整合到DC-DC
的IC里，内含各一个P、NMOS，包含省电模式功能，可提供1A-4A的连续输出电流，工作频率可到
1.5Mhz，转换效率可达90%）
＊移动电源/应急充：
* 5V/0.6A：AX5511
* 5V/1A：AX5510,AX5201
* 5V/2A：AX5302
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▲网络设备
＊路由器：AX3022,AX3001,AX3101～AX3107
＊Modem/LAN/ADSL/WLAN AP：AX3022,AX3001,AX3101～AX3107
＊无线网卡：AX3512,AX3513,AX3514
＊WiFi：AX3515
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▲AC-DC旅行充电器
*AX2530（替代OB2532，CL1100）
*AX2535（替代OB2535）
*AX6203（替代THX203）
*AX6228 12W
*AX2520 16W
