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| 型号： | 88EM8081XX-SAG2C000-T |
| 厂商： | MARVELL SEMICONDUCTOR INC |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A POWER FACTOR CONTROLLER, 120 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | GREEN, SOIC-8 |
| 文件页数： | 9/64页 |
| 文件大小： | 667K |
| 代理商： | 88EM8081XX-SAG2C000-T |
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Electrical Specifications
Electrical Characteristics
Copyright 2010 Marvell
Doc. No. MV-S106340-01 Rev. B
August 6, 2010, Preliminary Information
Document Classification: Proprietary
Page 17
DMIN
Minimum Duty Cycle4
3%
Feedback/Overvoltage
VFB_REG
Normal Regulation
Reference
IC powered on
2.55
V
VFB_OVP
Over Voltage Protection
Threshold
At 120% of VFB_REG.3.04
V
VFB_OVP_HYS
Over Voltage Protection
Hysteresis
0.49
V
VFB_OVP_LATCH
Over Voltage Protection
Latch
3.77
V
Current Sensing and Current Protection5
VIOVER_TH1
Over Current Threshold
Zone 16
Peak value of half-sine
voltage at VIN:
1.26<VIN<1.89Vpk
7
397
mV
VIOVER_TH2
Over Current Threshold
Zone 25
Peak value of half-sine
voltage at VIN:
1.89<VIN<2.59Vpk
8
329
mV
VIOVER_TH3
Over Current Threshold
Zone 35
Peak value of half-sine
voltage at VIN:
2.59< VIN<3.43Vpk
9
269
mV
VIOVER_TH4
Over Current Threshold
Zone 45
Peak value of half-sine
voltage at VIN:
3.43<VIN<3.85Vpk
10
202
mV
VIOVER_CYC
Cycle by cycle current
protection logic input (OCP
pin) threshold for SW on11
1.68
V
88EM8080 Switching Frequency Oscillator
FSW
Frequency
(Average Mode)
59
kHz
88EM8081 Switching Frequency Oscillator
FSW
Frequency
(Average Mode)
118
kHz
1. VDD Quiescent Current: VDD power supply current before VDD first time reaches VDD_ON.
2. Considering the voltage drop on the internal driver MOSFET during current sourcing.
3. Considering the voltage drop on the internal driver MOSFET during current sinking.
Table 4:
Electrical Characteristics (Continued)
NOTE: A 12V supply voltage is applied and the ambient temperature (TA) = 25°C.
S y mbol
Paramet e r
Cond it io ns
Min
Ty p
Max
Units
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