今天小编要和大家分享的是RT8482相关信息，接下来我将从RT8482应用电路(高电压高电流LED驱动器控制器)，10pcs/lot rt8482gqw rt8482 h9=eg h9=ej h9=eh这几个方面来介绍。
RT8482相关技术文章RT8482应用电路(高电压高电流LED驱动器控制器)
RT8482应用电路(高电压高电流LED驱动器控制器)
The RT8482 is a current mode PWM controller designed to drive an external MOSFET for high current LED applications. With a current sense amplifier threshold of 190mV, the LED current is programmable with one external current sense resistor. With a maximum operating input voltage of 36V and output voltage up to 48V, the RT8482 is ideal for buck, boost or buck-boost operation.With 350kHz operating frequency, the external inductor and capacitors can be small while maintaining high efficiency.Dimming can be either analog or PWM digital. The unique built-in clamping comparator and filter allow easy low noise analog dimming conversion from PWM signal with only one external capacitor.The RT8482 is available in WQFN-16L 3x3 and SOP-16 packages. |
| Ordering Info |
 Note :Richtek Green products are :► RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.► Suitable for use in SnPb or Pb-free soldering processes. |
| Features |
| • High Voltage Capability : VIN Up to 36V, VOUT Up to 48V• Buck, Boost or Buck Boost Operation• Current Mode PWM with 350kHz Switching Frequency• Easy Dimming : Analog, PWM Digital or PWM Converting to Analog with One External Capacitor• Programmable Soft Start to Avoid Inrush Current• Programmable Over Voltage Protection• VIN Under Voltage Lockout and Thermal Shutdown• 16-Lead WQFN and SOP Packages• RoHS Compliant and Halogen Free |
| Application |
| • General Industrial High Power LED Lighting• Desk Lights and Room Lighting• Building and Street Lighting• Industrial Display Backlight 更详细介绍：http://www.elecfans.com/soft/39/2010/2010093090874.html |
| Pin Configurations |
( VIEW)
SOP-16
WQFN-16L 3x3 |
| Typical Applications Circuit |
 Figure 1. Analog Dimming in Boost Configuration Figure 2. PWM to Analog Dimming in Boost Configuration Figure 3. Analog Dimming in Buck-Boost Configuration Figure 4. Analog Dimming in Buck Configuration |
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