RT8801B 데이터 시트보기 (PDF) - Richtek Technology
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RT8801B
Richtek Technology
RT8801B Datasheet PDF : 23 Pages
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Preliminary
RT8801B
Typical Operating Characteristics
450
400
350
300
250
200
150
100
50
0
0
Adjustable Frequency
20
40
60
80
100 120
RRT (kΩ))
3
2.8
2.6
2.4
2.2
2
1.8
1.6
1.4
1.2
1
0
Linearity of each PWM
PWM2
PWM3
PWM1
PWM4
fOSC = 200k
500 1000 1500 2000 2500 3000 3500
Pulse Width (ns)
VCORE
Load Transient Response
VCORE
Load Transient Response
Phase
IOUT
VADJ
CH1: (500mV/Div)
CH2: (10V/Div)
CH3: (50A/Div)
CH4: (100mV/Div)
Time (5μs/Div)
Phase1
Phase2
Phase3
CH1: (500mV/Div), CH2: (10V/Div)
CH3: (10V/Div), CH4: (10V/Div)
Time (5μs/Div)
PWM
Relationship Between Inductor
Current and VADJ
CH1:(5V/Div)
CH2:(5V/Div)
VSS
VADJ
IL
CH3:(50mV/Div)
CH4:(20A/Div)
Time (25ms/Div)
PWM
UGATE
LGATE
VCOMP
Power-Off @ IOUT = 60A
CH1:(5V/Div)
CH2:(20V/Div)
CH3:(10V/Div)
CH4:(1V/Div)
Time (10μs/Div)
DS8801B-04 August 2007
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www.richtek.com
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