ML4803 Datasheet, PDF (11/13 Pages) Fairchild Semiconductor – 8-Pin PFC and PWM Controller Combo

ML4803
LINE _{F1 5A 250V}
J1-1
R24
470kΩ
0.5W
NEUTRAL
J1-2
C20
4.7nF
250VAC
C19
4.7nF
250VAC
C4
0.47µF
250VAC
BR1
600V
4A
TH1
10Ω
5A
L3
R22
10kΩ
102T
L2
1000µH
R1
CR1 8A, 600V
Q5
36Ω
Q2
R2
36Ω
CR5
16V
0.5W
C1
220µF
450V
R3 0.15Ω 3W
CR7
Q4
R8 36Ω
T2
13
R30 200Ω
Q1
R38 22Ω
R23
10kΩ
C29 0.01µF
10 4
C16
0.01µF
CR3
T1
R13
5.62MΩ
C7
0.1µF
R7
10Ω
C23
0.01µF _{R29 20kΩ}
CR16
R19
IN4148 10kΩ
R27
20kΩ
3W
R26
20kΩ
3W
CR8
C11
L2
1000µF
C22
C9
1µF
1µF
4T
R31
10Ω
C21
1µF
CR15
R4 1kΩ
CR12
R12
5.62MΩ
R28
20kΩ _ML4803
1
PFC
8
PWM
2
GND
3
ISENSE
4
VEAO
7
VCC
6
ILIMIT
5
VDC
R25
390kΩ
C5
8.2nF
7.0V
C15
0.015µF
C8
0.15µF
C28
C6
1µF _C27
1µF
0.01µF
CR10
R5 36Ω
Q3
5
R11 150Ω
R32 100Ω
4
CR11
C10
2.2nF
CR9 R21
10kΩ
R10
0.75Ω
3W
CR4
R20
510Ω
CR18 51V
C18 4.7nF _{R36 220Ω}
CR2
CR2
30A
30A, 60V
60V
C2
2200µF
L1 25µH
C25
0.01µF
500V
12V
J2-1
C3 _R14
1µF _150Ω
2W
12VRET
J2-2
C26
0.01µF
500V
R6 1.2kΩ
R9
1.5kΩ
C14
4.7µF
U3
1
2
R37
330Ω
C17
0.1µF
C13 1nF
R15
9.09kΩ
R17 3.3kΩ
3
U2 ¹
2
C12 0.1µF R18 1kΩ
R16
2.37kΩ
Figure 12. Typical Application Circuit. Universal Input 240W 12V DC Output
February 1999
11