DS3881E+T&R/C Maxim Integrated Products, DS3881E+T&R/C Datasheet - Page 8

• Manufacturer Part Number: DS3881E+T&R/C
• Description: IC AUTO CCFL CTRLR 1CH 24-TSSOP
• Manufacturer: Maxim Integrated Products
• Type: CCFL Controllerr

Specifications of DS3881E+T&R/C

• Frequency: 40 ~ 100 kHz
• Current - Supply: 12mA
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 24-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Lead Free Status / Rohs Status: Details

Single-Channel Automotive CCFL Controller
Figure 1. Functional Diagram
8
SET/DPWM CLOCK INPUT
STEP LAMP FREQUENCY
LAMP FREQUENCY SET
_____________________________________________________________________
ANALOG BRIGHTNESS
CONFIGURATION AND
EXTERNAL RESISTOR
EXTERNAL RESISTOR
DPWM FREQUENCY
LAMP FREQUENCY
CONTROL PORT
INPUT/OUTPUT
INPUT/OUTPUT
DPWM SIGNAL
UP OR DOWN
I
2
CONTROL
C DEVICE
GND_S
BRIGHT
LSYNC
PSYNC
FAULT
A0/A1
POSC
LOSC
STEP
SDA
PDN
LCO
SCL
INTERFACE
OSCILLATOR
22.5Hz TO
OSCILLATOR (±5%)
I
440Hz
(±5%)
2
40kHz TO 100kHz
C
[40kHz ~ 100kHz]
DPSS BIT
AT CR1.3
LFSS BIT
AT CR1.2
POSCS BIT
AT CR1.1
MUX
8 BYTE USER MEMORY
CONTROL REGISTERS
STATUS REGISTERS
RGSO BIT
AT CR1.4
EEPROM
MUX
GENERATOR
x512
RAMP
PLL
DS3881
HANDLING
FAULT
[20.48MHz ~ 51.20MHz]
Enable /
System
SYSTEM
ENABLE/
POR
POR
CHANNEL FAULT
CHANNEL ENABLE
DPSS BIT
AT CR1.3
MUX
22.5Hz TO 440Hz
Functional Diagrams
2.0V
2.0V
SIGNAL
DPWM
CONTROLLER
SINGLE
UVLO
CCFL
VREF
V
[4.75V TO 5.25V]
SVMH
SUPPLY VOLTAGE
MONITOR—HIGH
SVML
SUPPLY VOLTAGE
MONITOR—LOW
OVD1
OVERVOLTAGE
DETECTION
GA1
GB1
GND
LCM1
LAMP CURRENT
MONITOR
CC
MOSFET
GATE
DRIVERS