The LA8303 is a voltage mode, step-down LED driver that is designed to meet maximum 2A constant current for high power LED application, and utilizes PWM control scheme that switches with 300KHz fixed frequency. This device includes an error amplifier, oscillation circuit, P-channel power MOSFET, and etc. The internal reference voltage source provides a 0.21V low feedback voltage that can reduce the power dissipation of the current setting resistor and improve conversion efficiency.  The input voltage range of LA8303 is from 3.6V to 23V. It is suitable for series-parallel 1W, 3W, or 5W high power LED application due to the high operation voltage and output capability. At 12V input voltage, this device can drive up to 15pcs 1W LED (3S-5P) with constant 350mA LED current.  The LA8303 provides an enable function that can be controlled by external logic signal. It also provides excellent regulation during line or load transient due to the internal compensation. Other features of thermal protection, current limit, short circuit protection, and dimming control are also included. Due to the low RDS(ON) of the power MOSFET, the LA8303 provides a high efficiency step-down application. It can also operate with a maximum duty cycle of 100% for use in low drop-out conditions.  The package is available in a standard SOP-8L.

Features  

• Low Feedback Voltage 0.21V 

• Up to 96% Efficiency  

• Wide Operation Voltage from 3.6V to 23V 

• Driving up to 15 LEDs (1W 3S-6P) at 12VIN 

• No External Compensation Required 

• Great Output Capability: 2A 

• Oscillation Frequency: 300KHz 

• PWM or Analog Dimming Control 

• Built-in P-channel MOSFET  

• External ON/OFF Control Function 

• Low Shutdown Current: 1uA  

• Current Limit and Thermal Protection 

• Short Circuit Protection 

• SOP-8L Package  

• All Products meet Rohs Standard

Applications  

• High Power LED Driver 

• Backlight Applications  

• General Lighting Solutions 

• Constant Current Source

企业名：珠海市金盈电子科技有限公司

类型：贸易/代理/分销

电话： 0756-8947678
0756-8712028

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