Datasheet

DS3882
Dual-Channel Automotive CCFL Controller
30 ____________________________________________________________________
INVERTER SUPPLY
VOLTAGE (V
INV
)
(8V TO 16V)
GA1
LAMP CURRENT MONITOR
CCFL LAMP
GB1
OVD1
V
CC
V
CC
V
CC
V
CC
BRIGHT
SVMH
LAMP BRIGHTNESS
TRANSFORMER
DUAL POWER
MOSFET
DEVICE
SUPPLY VOLTAGE
(5V ±5%)
OVERVOLTAGE DETECTION
LCM1
GND
LAMP FREQUENCY
INPUT/OUTPUT
LSYNC
SCL
SDA
I
2
C
CONFIGURATION
AND CONTROL PORT
FAULT
PSYNC
DPWM SIGNAL
INPUT/OUTPUT
LOSC
POSC
LCO
PDN
LAMP ON/OFF
LAMP CURRENT
OVERDRIVE ENABLE
SVML
A0
A1
HARDWARE
CONTROL
STEP LAMP
FREQUENCY
STEP
GND_S
R1
R2
R7
R9
R10
C2
C3
C7
R11
C8
R3
R4
R5
R6
C1
GA2
LAMP CURRENT MONITOR
CCFL LAMP
GB2
OVD2
TRANSFORMER
DUAL POWER
MOSFET
OVERVOLTAGE DETECTION
LCM2
R8
C4
C5
C6
DS3882
Typical Operating Circuit
Power-Supply Decoupling
To achieve best results, it is highly recommended that
a decoupling capacitor is used on the IC power-supply
pin. Typical values of decoupling capacitors are
0.01µF or 0.1µF. Use a high-quality, ceramic, surface-
mount capacitor, and mount it as close as possible to
the V
CC
and GND pins of the IC to minimize lead
inductance.
Chip Information
SUBSTRATE CONNECTED TO GROUND
Package Information
For the latest package outline information and land patterns,
go to www.maxim-ic.com/packages
. Note that a “+”, “#”, or
“-” in the package code indicates RoHS status only. Package
drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
28 TSSOP
(173 mils)
U28+2
21-0066 90-0171