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ML4835CS Scheda tecnica(PDF) 2 Page - Micro Linear Corporation

Il numero della parte ML4835CS
Spiegazioni elettronici  Compact Fluorescent Electronic Dimming Ballast Controller
PDF  17 Pages
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Produttore elettronici  MICRO-LINEAR [Micro Linear Corporation]
Homepage  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation

ML4835CS Scheda tecnica(HTML) 2 Page - Micro Linear Corporation

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ML4835
2
PIN CONFIGURATION
PIN DESCRIPTION
PIN
NAME
FUNCTION
1
PVFB/OVP
Inverting input to the PFC error
amplifier and OVP comparator input.
2
PEAO
PFC error amplifier output and
compensation node
3
PIFB
Senses the inductor current and peak
current sense point of the PFC cycle
by cycle current limit
4
PIFBO
Output of the current sense amplifier.
Placing a capacitor to ground will
average the inductor current.
5
LAMP FB
Inverting input of the lamp error
amplifier, used to sense and regulate
lamp arc current. Also the input node
for dimmable control.
6
LEAO
Output of the lamp current error
transconductance amplifier used for
lamp current loop compensation
7RSET
External resistor which SETS oscillator
FMAX, and RX/CX charging current
8RT2
Oscillator timing component to set
start frequency
9RT/CT
Oscillator timing components
PIN
NAME
FUNCTION
10
INTERRUPT Input used for lamp-out detection and
restart. A voltage less than 1V will
reset the IC and cause a restart after a
programmable interval.
11
RX/CX
Sets the timing for preheat and
interrupt.
12
PWDET
Lamp output power detection
13
CRAMP
Integrated voltage of the error
amplifier out
14
AGND
Analog ground
15
PGND
Power ground.
16
OUT B
Ballast MOSFET driver output
17
OUT A
Ballast MOSFET driver output
18
PFC OUT
Power factor MOSFET driver output
19
VCC
Positive supply voltage
20
REF
Buffered output for the 7.5V reference
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
ML4835
20-Pin SOIC (S20)
20-Pin DIP (P20)
PVFB/OVP
PEAO
PIFB
PIFBO
LAMP FB
LEAO
RSET
RT2
RT/CT
INTERRUPT
REF
VCC
PFC OUT
OUT A
OUT B
PGND
AGND
CRAMP
PWDET
RX/CX



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