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ML4826 Datasheet(PDF) 6 Page - Micro Linear Corporation

Part # ML4826
Description  PFC and Dual Output PWM Controller Combo
PDF  16 Pages
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Manufacturer  MICRO-LINEAR [Micro Linear Corporation]
Direct Link  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation

ML4826 Datasheet(HTML) 6 Page - Micro Linear Corporation

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ML4826
6
TYPICAL PERFORMANCE CHARACTERISTICS
Voltage Error Amplifier (VEA) Transconductance (gm)
Current Error Amplifier (IEA) Transconductance (gm)
Variable Gain Control Transfer Characteristic
Figure 1. PFC Section Block Diagram.
250
200
150
100
50
0
VFB (V)
05
3
14
2
250
200
150
100
50
0
IEA Input Voltage (mV)
-500
500
0
400
300
200
100
0
VRMS (mV)
05
3
14
2
19
VEAO
IEAO
VFB
IAC
VRMS
ISENSE
RAMP 1
OSCILLATOR
OVP
PFC ILIMIT
VREF
2.5V
+
-
-
+
20
2
4
3
7.5V
REFERENCE
18
VCC
17
VCCZ
VEA
8
-
+
IEA
1
+
-
+
-
PFC OUT
15
S
R
Q
Q
S
R
Q
Q
2.7V
-1V
RTCT
7
GAIN
MODULATOR
x2
3.5k
Ω
3.5k
Ω
13.5V
8V
UVLO
VCCZ



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