ML4835CP MICRO-LINEAR [Micro Linear Corporation], ML4835CP Datasheet - Page 2

• Manufacturer Part Number: ML4835CP
• Description: Compact Fluorescent Electronic Dimming Ballast Controller
• Manufacturer: MICRO-LINEAR [Micro Linear Corporation]

ML4835
PIN CONFIGURATION
PIN DESCRIPTION
PIN
2
1
2
3
4
5
6
7
8
9
NAME
PVFB/OVP
PEAO
PIFB
PIFBO
LAMP FB
LEAO
R
R
R
T2
T
SET
/C
T
FUNCTION
Inverting input to the PFC error
amplifier and OVP comparator input.
PFC error amplifier output and
compensation node
Senses the inductor current and peak
current sense point of the PFC cycle
by cycle current limit
Output of the current sense amplifier.
Placing a capacitor to ground will
average the inductor current.
Inverting input of the lamp error
amplifier, used to sense and regulate
lamp arc current. Also the input node
for dimmable control.
Output of the lamp current error
transconductance amplifier used for
lamp current loop compensation
External resistor which SETS oscillator
F
Oscillator timing component to set
start frequency
Oscillator timing components
MAX
, and R
X
/C
X
charging current
INTERRUPT
PVFB/OVP
LAMP FB
PIFBO
R T /C T
PEAO
LEAO
R SET
PIFB
R T2
10
20-Pin SOIC (S20)
1
2
3
4
5
6
7
8
9
20-Pin DIP (P20)
ML4835
PIN
11
12
13
14
15
16
17
18
19
20
10
20
19
18
17
16
15
14
13
12
11
NAME
INTERRUPT Input used for lamp-out detection and
R
PWDET
C
AGND
PGND
OUT B
OUT A
PFC OUT
V
REF
X
RAMP
CC
/C
X
REF
V CC
PFC OUT
OUT A
OUT B
PGND
AGND
C RAMP
PWDET
R X /C X
FUNCTION
restart. A voltage less than 1V will
reset the IC and cause a restart after a
programmable interval.
Sets the timing for preheat and
interrupt.
Lamp output power detection
Integrated voltage of the error
amplifier out
Analog ground
Power ground.
Ballast MOSFET driver output
Ballast MOSFET driver output
Power factor MOSFET driver output
Positive supply voltage
Buffered output for the 7.5V reference