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UC2842AD 参数 Datasheet PDF下载

UC2842AD图片预览
型号: UC2842AD
PDF下载: 下载PDF文件 查看货源
内容描述: 电流模式PWM控制器 [Current Mode PWM Controller]
分类和应用: 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
文件页数/大小: 7 页 / 519 K
品牌: TI [ TEXAS INSTRUMENTS ]
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APPLICATIONS DATA (cont.)
Output Saturation Characteristics
UC1842A/3A/4A/5A
UC2842A/3A/4A/5A
UC3842A/3A/4A/5A
Error Amplifier Open-Loop Frequency Response
Oscillator Section
Oscillator Frequency vs Timing Resistance
Maximum Duty Cycle vs Timing Resistor
Open-Loop Laboratory Test Fixture
High peak currents associated with capacitive loads necessi-
tate careful grounding techniques. Timing and bypass capaci-
tors should be connected close to pin 5 in a single point
ground. The transistor and 5k potentiometer are used to sam-
ple the oscillator waveform and apply an adjustable ramp to
pin 3.
5