ML4800 Fairchild Semiconductor, ML4800 Datasheet - Page 2

• Manufacturer Part Number: ML4800
• Description: The ML4800 is a controller for power factor corrected, switched mode power supplies
• Manufacturer: Fairchild Semiconductor

ML4800
Pin Configuration
Pin Description
2
Pin
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
PWM OUT
PFC OUT
DC I
RAMP 1
RAMP 2
I
Name
VEAO
V
IEAO
SENSE
GND
V
V
V
V
I
SS
RMS
REF
AC
DC
CC
FB
LIMIT
Slew rate enhanced PFC transconductance error amplifier output
PFC AC line reference input to Gain Modulator
Current sense input to the PFC Gain Modulator
PFC Gain Modulator RMS line voltage compensation input
Connection point for the PWM soft start capacitor
PWM voltage feedback input
Oscillator timing node; timing set by R
When in current mode, this pin functions as the current sense input; when in voltage mode,
it is the PWM modulation ramp input.
PWM cycle-by-cycle current limit comparator input
Ground
PWM driver output
PFC driver output
Positive supply
Buffered output for the internal 7.5V reference
PFC transconductance voltage error amplifier input
PFC transconductance voltage error amplifier output
16-Pin Narrow SOIC (S16N)
RAMP 1
RAMP 2
I SENSE
V RMS
IEAO
V DC
I AC
16-Pin PDIP (P16)
SS
1
2
3
4
5
6
7
8
TOP VIEW
ML4800
16
15
14
13
12
11
10
T
9
C
T
Function
VEAO
V FB
V REF
V CC
PFC OUT
PWM OUT
GND
DC I LIMIT
PRODUCT SPECIFICATION
REV. 1.0.5 9/25/01