ML4827IP-2 查看數據表（PDF） - Fairchild Semiconductor
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ML4827IP-2 Datasheet PDF : 16 Pages
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ML4827
Typical Performance
250
200
150
100
50
0
0
1
2
3
4
5
VFB (V)
Voltage Error Amplifier (VEA) Transconductance (gm)
400
PRODUCT SPECIFICATION
250
200
150
100
50
0
–500
0
500
IEA INPUT VOLTAGE (mV)
Current Error Amplifier (IEA) Transconductance (gm)
300
200
100
0
0
1
2
3
4
5
VRMS (mV)
Gain Modulator Transfer Characteristic (K)
16
VEAO
1
IEAO
VFB
15
2.5V
IAC
2
VRMS
4
ISENSE
3
VEA
–
+
3.5kΩ IEA
+
–
GAIN
MODULATOR
3.5kΩ
POWER FACTOR CORRECTOR
BROKEN WIRE
+ COMPARATOR
OVP
+
1V
–
2.7V –
+
–1V +
–
–
PFC ILIMIT
RAMP 1
7
OSCILLATOR
2µA
VREF VCCZ
13.5V
13
VCC
7.5V
REFERENCE
VREF
14
SQ
RQ
SQ
RQ
PFC OUT
12
Figure 1. PFC Section Block Diagram
6
REV. 1.0.1 6/27/01
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