ML4832
PIN CONFIGURATION
ML4832
18-Pin SOIC (S18)
ML4832
18-Pin DIP (P18)
EA OUT
IA OUT
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
EA–/OVP
EA OUT
IA OUT
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
EA–/OVP
V
V
REF
CC
V
REF
V
CC
I
SINE
I
SINE
IA+
LAMP FB
LFB OUT
PFC OUT
OUT A
OUT B
P GND
GND
IA+
PFC OUT
OUT A
OUT B
P GND
GND
LAMP FB
LFB OUT
R
SET
R
SET
R /C
T
T
R /C
T
T
INTERRUPT
R /C
X
X
INTERRUPT
R /C
X X
TOP VIEW
TOP VIEW
PIN DESCRIPTION
PIN# NAME
FUNCTION
PIN#
NAME
FUNCTION
9
INTERRUPT Input used for lamp-out detection
and restart. A voltage greater than
7.5 volts resets the chip and
1
2
EA OUT
PFC error amplifier output and
compensation node
causes a restart after a
IA OUT
Output and compensation node of the
PFC average current transconductance
amplifier
programmable interval.
10
R /C
Sets the timing for the preheat,
dimming lockout, and interrupt
X
X
3
4
I
PFC gain modulator input
SINE
11
12
13
14
15
GND
Ground
IA+
Non-inverting input of the PFC average
current transconductance amplifier
and peak current sense point of the
PFC cycle by cycle current limit
comparator
P GND
OUT B
OUT A
PFC OUT
Power ground for the IC
Ballast MOSFET drive output
Ballast MOSFET drive output
5
6
LAMP FB
LFB OUT
Inverting input of an error amplifier
used to sense (and regulate) lamp arc
current. Also the input node for
dimming control.
Power Factor MOSFET drive
output
16
17
V
Positive supply for the IC
Output from the lamp current error
transconductance amplifier used for
lamp current loop compensation
CC
V
Buffered output for the 7.5V
voltage reference
REF
7
8
R
External resistor which sets oscillator
SET
18
EA–/OVP
Inverting input to PFC error
amplifier and OVP comparator
input
F
, and R /C charging current
MAX
X X
R /C
Oscillator timing components
T
T
2
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
