NCP5030

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LED Driver, Buck-Boost Converter, Fixed Frequency, PWM

制造商：ON

中文数据手册

产品信息

The NCP5030 is a fixed frequency PWM buck-boost converter optimized for constant current applications such as driving high-powered white LED. The buck-boost is implemented in an H-bridge topology and has an adaptive architecture where it operates in one of three modes: boost, buck-boost, or buck depending on the input and output voltage condition. This device has been designed with high-efficiency for use in portable applications and is capable of driving in DC up to 900 mA into a high power LED for flashlight / torch applications. To protect the device cycle-by-cycle current limiting and a thermal shutdown circuit have been incorporated as well as output over-voltage protection. The 700 kHz switching frequency allows the use of a low value 4.7 µH and ceramic capacitors.

Efficiency: 87% at 500 mA and 3.3 V VIN
Internal Synchronous Rectifier, No Schottky Diodes
Adjustable Switching Limit Current to Optimize inductor size
0.3 µA Shut-down Control with True-Cut off
Input Voltage Range from 2.7 V to 5.5V
200 mV Feedback Voltage
Output Over-voltage and Thermal Shut Down Protection

电路图、引脚图和封装图

NCP5030电路图
NCP5030电路图

在线购买

型号	制造商	描述	购买
NCP5030MTTXG	ON	IC LED DRIVER RGLTR DIM 12WDFN	立即购买

技术资料

标题	类型	大小（KB）	下载
WDFN12, 3x4, 0.5P	PDF	34	点击下载
Buck-Boost Converter to Drive a Single LED From 1 Li-Ion or 3 Alkaline Batteries	PDF	186	点击下载
NCP5030_PD.GIF	UNKNOW	19	点击下载
NCP5030_AD.GIF	UNKNOW	16	点击下载

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