ML4803CS2 Fairchild Semiconductor, ML4803CS2 Datasheet - Page 6

• Manufacturer Part Number: ML4803CS2
• Description: Power Factor Correction ICs PFC Controller PWM Combo
• Manufacturer: Fairchild Semiconductor

Specifications of ML4803CS2

• Start-up Supply Current: 200uA
• Switching Freq: 134kHz
• Operating Supply Voltage (max): 18.3V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Package Type: SOIC N
• Pin Count: 8
• Mounting: Surface Mount
• Switching Frequency: 134 KHz
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Not Compliant

ML4803
Typical Applications
One Pin Error Amp
6
REF
+
DC
VIN
OSC
I1
L1
U4
+
–
EA
RAMP
CLK
U3
Figure 3. Typical Leading Edge Control Scheme.
VEAO
SW2
SW1
+
–
CMP
U1
Ω
I2
C1
I4
I3
R
D
DFF
CLK
U2
RL
Q
Q
Programming Resistor Value
PFC Voltage Loop Compensation
Rp
C
C
C
COMP
COMP
COMP
=
V
BOOST
=
=
=
11.3MΩ × 400V × 0.5V × 220µF × (2 × π × 30Hz)
RAMP
R
VSW1
16n
I
p
PGM
×
VEAO
F
−
V
BOOST
V
EAO
×
=
∆
400
VEAO C
TIME
TIME
35
V
Pin
300
−
µ
A
×
50V
PRODUCT SPECIFICATION
.
W
OUT
=
×
113
(2
REV. 1.1.3 8/3/01
.
× ×
M
π
Ω
f)
2
(1)
(2)
2