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AX3003 150KHz, 3A PWM Buck DC/DC Converter

性能描述GENERAL D*CRIPTION：

        The AX3003 series are monolithic IC designed for a step-down DC/DC converter, and own the ability of driving a 3A load without additional transistor. It saves board space. The external shutdown function can be controlled by logic level and then come into standby mode. The internal compensation makes feedback control having good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. If current limit function occurs and VFB is down below 0.5V, the switching frequency will be reduced. The AX3003 series operates at a switching frequency of 150KHz thus allow *aller sized filter components than what would be needed with lower frequency switching regulators. Other features include a guaranteed 4% tolerance on output voltage under specified input voltage and output load conditions, and 15% on the oscillator frequency. The output version included fixed 3.3V, 5V, 12V, and an adjustable t*e. The chips are available in a 5-lead TO-252 package.

特点FEATUR*：

- Output voltage: 3.3V, 5V, 12V and adjustable output version.

- Adjustable version output voltage range, 1.23V to 19.5V 4%.

- 150KHz 15% fixed switching frequency.

- Voltage mode non-synchronous PWM control.

- Thermal-shutdown and current-limit protection.

- ON/OFF shutdown control input.

- Short Circuit Protect (SCP).

- Operating voltage can be up to 22V.

- Output load current: 3A.

- 5-Lead TO-252 Pb-Free packages.

- Low power standby mode.

- Built-in switching transistor on chip.

引脚图PIN ASSIGNMENT：

The package of AX3003 is TO252-5L; the pin *ignment is given by:

典型应用电路APPLICATION CIRCUIT：

(1) Adjustable Output Voltage Version

(2) Adjustable Output Voltage Version With Delayed Startup

(3) Fixed Output Voltage Version

我们为您提供AXElite亚瑟莱特以下电源管理IC及应用方案:

▲LED照明驱动电源

＊MR16/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

＊10寸以下屏背光驱动：AX2012

▲车载设备

＊车充：

5V/1A：AX3007,AX3010,AX3011,AX358,AX34063

5V/1.5A：AX3015/6

5V/2.1A：AX3111,AX3112,AX3117

5V/3.1A,5V/4.2A：AX3304 AM9569D

＊车载DVD/GPS：

AX3005,AX3101,AX3102,AX3103,AX3104,AX3105,AX3106,AX3107,AX3003,AX3115,AX3301,AX5110,AX5201,AX5204,AX1007,AX66xx,AX6901

▲数码消费产品

＊安*设备：AX3005,AX3001,AX3022,AX3023,AX3101,AX6901

＊DVB机顶盒：AX3001～AX3004,AX3101～AX3106,AX3512～AX3519,AX3113,AX3301,AX1084,AX1007,AX358

＊Protable DVD：AX3101,AX3482,AX3484，AX5201,AX5204,AX5510

＊*/EPC／MID：AX3102～AX3107,AX3113,AX3114,AX3120～AX3122,AX3512～AX3519,AX5201,AX5204,AX5301,AX5110,AX6901,AX1007,AX1084,AX66xx,AX993,AX995

＊LCD-TV：AX3102～AX3107,AX3113,AX3114,AX3120～AX3122,AX5201,AX5204,AX5301,AX358,AX1007,AX1084,AX66xx,AX6901

＊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*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

▲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

企业名：深圳市四海恒通科技有限公司

类型：经销商

电话： 755-83983377

联系人：王德源

地址：广东深圳福虹路鼎盛时代A座9楼9B