- 您现在的位置：买卖IC网 > Datasheet目录346 > NCP5021MUTXG (ON Semiconductor)IC WHITE LED DVR HV AMB 16-UQFN Datasheet资料下载
参数资料
| 型号： | NCP5021MUTXG |
| 厂商： | ON Semiconductor |
| 文件页数： | 7/17页 |
| 文件大小： | 0K |
| 描述： | IC WHITE LED DVR HV AMB 16-UQFN |
| 产品变化通告： | Product Obsolescence 07/Jul/2010 |
| 标准包装： | 3,000 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，闪灯/白光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 1.13MHz ~ 1.47MHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 输出电压： | 32V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-UFQFN 裸露焊盘 |
| 供应商设备封装： | 16-UQFN-EP（3x3） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
NCP5021
Figure 4. Typical Switching Operation
Although the total ohmic resistance plays an important
role in the losses developed in the converter, the switching
losses are key when the operating frequency is beyond a
few kilohertz range. To minimize such losses, the internal
power NMOS is designed to minimize the dI/dt, thus
minimizing the I*V crossing time. As a consequence, the
slope of the positive going voltage ? VLX ? present at the Lx
pin is very fast as well and an overshoot is created since the
Schottky rectifier has an intrinsic turn-on time: the voltage
keeps going until the diode turns ? on, clamping the VLX
in Figure 5. The proposed Schottky, depicted in the
schematic Figure NO TAG, is a good alternative to
minimize such an overshoot.
On the other hand, the same overshoot is propagated to
the Vout voltage when the system operates under open load
condition. As a consequence, it is strongly recommended
to implement a simple filter, built with a small footprint
resistor, to makes sure that no any uncontrolled operation
of the high sensitive pin Vos will happen under the worst
case conditions: see Figure 1, resistor R5.
voltage at the output value. Such a mechanism is depicted
Figure 5. Typical Turn On Time of the Schottky Rectifier
http://onsemi.com
7
相关PDF资料 |
PDF描述 |
|---|---|
| NCP5050MTTXG | IC LED DRIVR PHOTO FLASH 10-WDFN |
| NCP5111DR2G | IC DRIVER HI/LOW SIDE HV 8-SOIC |
| NCP5304DR2G | IC DRIVER HI/LOW SIDE HV 8-SOIC |
| NCP5355DG | IC DRVR SYNC BUCK MOSF 12A 8SOIC |
| NCP5359ADR2G | IC MOSFET GATE DVR DUAL 8-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP502ASQ15T1 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq Voltage Regulator in an SC70−5 |
| NCP502ASQ15T1G | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq, Low−Dropout Voltage Regulator |
| NCP502ASQ18T1 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq Voltage Regulator in an SC70−5 |
| NCP502ASQ18T1G | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq, Low−Dropout Voltage Regulator |
| NCP502ASQ25T1 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:80 mA CMOS Low Iq Voltage Regulator in an SC70−5 |
发布紧急采购，3分钟左右您将得到回复。