ML4805
PIN CONFIGURATION
ML4805
18-Pin PDIP (P18)
18-Pin SOIC (S18)
IEAO
1
2
3
4
5
6
7
8
9
18 VEAO
I
17
16
15
V
V
V
AC
FB
I
SENSE
REF
CC
V
RMS
SS
14 PFC OUT
13 PWM OUT
12 PGND
V
DC
R C
T T
RAMP 1
RAMP 2
11 AGND
10
I
LIM
TOP VIEW
PIN DESCRIPTION
PIN NAME
FUNCTION
PIN NAME
FUNCTION
1
IEAO
PFC transconductance current error
amplifier output
9
RAMP 2
PWM ramp sense input
PWM current limit sense input
Analog ground
10
ILIM
2
3
I
AC
PFC gain control reference input
11
12
13
14
15
AGND
PGND
I
Current sense input to the PFC current
limit comparator
SENSE
Power ground
4
5
V
RMS
Input for PFC RMS line voltage
compensation
PWM OUT PWM driver output
PFC OUT
PFC driver output
SS
Connection point for the PWM soft start
capacitor
V
CC
Positive supply (connected to an
internal shunt regulator).
6
7
V
PWM voltage feedback input
DC
16
17
18
V
V
Buffered output for the internal 7.5V
reference
REF
R C
T
Connection for oscillator frequency
setting components
T
PFC transconductance voltage error
amplifier input
FB
8
RAMP 1
PFC ramp input
VEAO
PFC transconductance voltage error
amplifier output
2
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
