ML4832CS Ver la hoja de datos (PDF) - Micro Linear Corporation
Número de pieza
componentes Descripción
Fabricante
ML4832CS Datasheet PDF : 15 Pages
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ML4832
PIN CONFIGURATION
ML4832
18-Pin DIP (P18)
EA OUT
IA OUT
ISINE
IA+
LAMP FB
LFB OUT
RSET
RT/CT
INTERRUPT
1
18
2
17
3
16
4
15
5
14
6
13
7
12
8
11
9
10
TOP VIEW
EA–/OVP
VREF
VCC
PFC OUT
OUT A
OUT B
P GND
GND
RX/CX
ML4832
18-Pin SOIC (S18)
EA OUT
IA OUT
ISINE
IA+
LAMP FB
LFB OUT
RSET
RT/CT
INTERRUPT
1
18
2
17
3
16
4
15
5
14
6
13
7
12
8
11
9
10
TOP VIEW
EA–/OVP
VREF
VCC
PFC OUT
OUT A
OUT B
P GND
GND
RX/CX
PIN DESCRIPTION
PIN# NAME
1 EA OUT
FUNCTION
PFC error amplifier output and
compensation node
2 IA OUT
Output and compensation node of the
PFC average current transconductance
amplifier
3 ISINE
4 IA+
PFC gain modulator input
Non-inverting input of the PFC average
current transconductance amplifier
and peak current sense point of the
PFC cycle by cycle current limit
comparator
5 LAMP FB Inverting input of an error amplifier
used to sense (and regulate) lamp arc
current. Also the input node for
dimming control.
6 LFB OUT Output from the lamp current error
transconductance amplifier used for
lamp current loop compensation
7 RSET
8 RT/CT
External resistor which sets oscillator
FMAX, and RX/CX charging current
Oscillator timing components
PIN#
9
NAME
INTERRUPT
FUNCTION
Input used for lamp-out detection
and restart. A voltage greater than
7.5 volts resets the chip and
causes a restart after a
programmable interval.
10 RX/CX
Sets the timing for the preheat,
dimming lockout, and interrupt
11 GND
Ground
12 P GND
Power ground for the IC
13 OUT B
Ballast MOSFET drive output
14 OUT A
Ballast MOSFET drive output
15 PFC OUT
Power Factor MOSFET drive
output
16 VCC
17 VREF
Positive supply for the IC
Buffered output for the 7.5V
voltage reference
18 EA–/OVP
Inverting input to PFC error
amplifier and OVP comparator
input
2
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