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U6084B-MFPG3 PDF预览

U6084B-MFPG3

更新时间: 2024-02-19 22:05:05
品牌 Logo 应用领域
爱特美尔 - ATMEL 驱动器MOSFET驱动器驱动程序和接口接口集成电路功率控制光电二极管
页数 文件大小 规格书
11页 234K
描述
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U6084B-MFPG3 数据手册

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Features  
Pulse-width Modulation up to 2-kHz Clock Frequency  
Protection Against Short-circuit, Load-dump Overvoltage and Reverse VS  
Duty Cycle 0% to 100% Continuously  
Output Stage for Power MOSFET  
Interference and Damage Protection According to VDE 0839 and  
ISO/TR 7637/1  
PWM Power  
Control with  
Automatic  
Duty-cycle  
Reduction  
Charge-pump Noise Suppressed  
Ground-wire Breakage Protection  
1. Description  
The U6084B is a PWM-IC with bipolar technology designed for the control of an  
N-channel power MOSFET used as a high-side switch. The IC is ideal for use in the  
brightness control (dimming) of lamps such as in dashboard applications. For constant  
brightness, the preselected duty cycle can be reduced automatically as a function of  
the supply voltage.  
U6084B  
Figure 1-1. Block Diagram with External Circuit  
VBatt  
C5  
VS  
Rsh  
9
16  
11  
12  
Short circuit  
latch monitoring  
Current monitoring  
+ short circuit detection  
5
6
13  
14  
Charge  
pump  
RC oscillator  
C3  
47 nF  
PWM  
Logic  
C1  
47 kΩ  
Control input  
Output  
3
Duty cycle  
range  
0-100%  
C2  
Duty cycle  
reduction  
Voltage  
monitoring  
Enable/  
disable  
4
1
2
R3  
150 Ω  
Ground  
.
Rev. 4677C–AUTO–09/05  

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