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ML4830CP View Datasheet(PDF) - Micro Linear Corporation

Part Name
Description
Manufacturer
ML4830CP
Micro-Linear
Micro Linear Corporation 
ML4830CP Datasheet PDF : 15 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
ML4830
PIN CONFIGURATION
ML4830
20-PIN PDIP (P20)
IA–
IA OUT
I(SINE)
IA+/I(LIM)
LAMP F.B.
LFB OUT
R(SET)
MODE
R(T)/C(T)
INTERRUPT
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
TOP VIEW
EA OUT
EA–
VREF
VCC
PFC OUT
OUT A
OUT B
GND
R(X)/C(X)
OVP/INHIBIT
ML4830
20-PIN PDIP (P20)
IA–
IA OUT
I(SINE)
IA+/I(LIM)
LAMP F.B.
LFB OUT
R(SET)
MODE
R(T)/C(T)
INTERRUPT
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
TOP VIEW
EA OUT
EA–
VREF
VCC
PFC OUT
OUT A
OUT B
GND
R(X)/C(X)
OVP/INHIBIT
PIN DESCRIPTION
PIN# NAME
FUNCTION
1 IA–
Inverting input of the PFC average
current error amplifier
2 IA OUT
Output and compensation node of the
PFC average current error amplifier
3 I(SINE)
PFC gain modulator input
4 IA+/I(LIM) Non-Inverting input of the PFC
average current error amplifier and
input of peak current limit comparator
5 LAMP F.B. 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
Amplifier used for lamp current loop
compensation
7 R(SET)
External resistor which sets oscillator
FMAX, and R(X)/C(X) charging current
8 MODE
Controls how the Lamp Current Error
Amp and preheat timers modulate the
ballast outputs. Two Variable
Frequency and 1 PWM mode are
available through this pin
9 R(T)/C(T) Oscillator timing components
10 INTERRUPT A voltage of greater than VREF resets
the chip and causes a restart after a
delay of 3 times the start interval. Used
for lamp-out detection and restart
PIN# NAME
11 OVP/
INHIBIT
12 R(X)/C(X)
13 GND
14 OUT B
15 OUT A
16 PFC OUT
17 VCC
18 VREF
19 EA–
20 EA OUT
FUNCTION
When the voltage of this pin exceeds
5V, the PFC output is inhibited. When
the voltage exceeds 6.7V, the IC
function is inhibited and the IC is
reset. This pin can be used for a
remote ballast shutdown.
Sets the timing for the preheat,
dimming lockout and interrupt
IC Ground
Ballast MOSFET drive output
Ballast MOSFET drive output
Power Factor MOSFET drive output
Positive Supply for the IC
Buffered output for the 7.5V voltage
reference
Inverting input to PFC error amplifier
PFC Error Amplifier output and
compensation node
2

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