ml4876 Microsemi Corporation, ml4876 Datasheet - Page 2

• Manufacturer Part Number: ml4876
• Description: Backlight Lamp Driver With Contrast
• Manufacturer: Microsemi Corporation

ML4876
PIN CONFIGURATION
PIN DESCRIPTION
PIN
2
10
1
2
3
4
5
6
7
8
9
NAME
FEA OUT
FEA–
FEA+
L ON
VREF
ON/OFF
LEA–
LEAOUT
C
L RTD
T
DESCRIPTION
Output of flyback (contrast) error
amplifier
Negative input of flyback
(contrast) error amplifier
Positive input of flyback (contrast)
error amplifier
Logic input. A ”0“ on this pin
disables the lamp driver section
only
Voltage reference output
Logic input. A ”0“ on this pin
disables the linear regulator
Negative input for lamp error
amplifier
Output of lamp error amplifier
Oscillator timing capacitor
Input to resonant threshold detector
FEA OUT
LEA OUT
ON/OFF
L RTD
L ON
FEA+
VREF
FEA–
LEA–
C T
20-Pin SSOP (R20)
10
1
2
3
4
5
6
7
8
9
TOP VIEW
ML4876
PIN
11
12
13
14
15
16
17
18
19
20
20
19
18
17
16
15
14
13
12
11
NAME
B SYNC OUT
F GATE
VDD
L GATE1
HVDD
L GATE2
GND
B ON
B OFF
F ILIM
F ILIM
B OFF
B ON
GND
L GATE2
HVDD
L GATE1
VDD
F GATE
B SYNC OUT
Input to current limit comparator
DESCRIPTION
Output of MOSFET driver.
Connects to gate of synchronous
FET catch diode.
Connects to gate of MOSFET in
primary side of contrast control
Output of linear regulator. Positive
power for IC.
Output of MOSFET driver.
Connection to gate of one side of
inverter FET drive pair
Battery power input to linear
regulator
Output of MOSFET driver.
Connection to gate of one side of
inverter FET drive pair
Ground
Connection to primary side of gate
pulse transformer
Output of MOSFET driver.
Connection to gate of FET that
disables the input power.