MAX8751ETJ+ Maxim Integrated Products, MAX8751ETJ+ Datasheet - Page 20

• Manufacturer Part Number: MAX8751ETJ+
• Description: IC CNTRLR CCFL INV 32-TQFN
• Manufacturer: Maxim Integrated Products
• Type: CCFL Controllerr

Specifications of MAX8751ETJ+

• Frequency: 30 ~ 80 kHz
• Current - Supply: 3.2mA
• Voltage - Supply: 6 V ~ 28 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Lead Free Status / Rohs Status: Details

Fixed-Frequency, Full-Bridge CCFL
Inverter Controller
Table 2. Operation Summary
Note 1: 1MΩ resistor at HFCK and LPCK is added to define the state of the pins in Shutdown mode.
20
HSYNC
LSYNC
DPWM
HFCK
PSCK
CNTL
LFCK
SEL
PIN
HF
______________________________________________________________________________________
LF
An analog voltage on CNTL
sets the brightness.
Connect SEL to GND.
Connect a resistor to GND to
set the switching frequency.
Connect a resistor between
LF and GND to set DPWM
frequency.
Connect to the HFCK pin of
its slave controller. Connect
1MΩ resistor to GND. See
Note 1.
Connect to the LFCK pin of
its slave controller. Connect
1MΩ resistor to GND. See
Note 1.
Not used. Connect to GND.
Not used. Connect to GND.
Connect to the HF pin of its
slave controller.
Connect to the LF pin of its
slave controller.
INTERNAL OSCILLATORS
MASTER MODE USING
An analog voltage on CNTL
sets the brightness.
Connect SEL to GND.
The internal oscillator is not
active. Connect a resistor to
GND in case the external sync
signal is lost.
The internal oscillator is not
active. Connect a resistor to
GND in case the external sync
signal is lost.
Connect to the HFCK pin of its
slave controller. Connect 1MΩ
resistor to GND. See Note 1.
Connect to the LFCK pin of its
slave controller. Connect 1MΩ
resistor to GND. See Note 1.
Connect to a high-frequency
external signal to sync the
switching frequency.
Connect a low-frequency
external signal to sync the
DPWM frequency.
Connect to the HF pin of its
slave controller.
Connect to the LF pin of its
slave controller.
EXTERNAL SYNC SIGNAL
MASTER MODE USING
(SYNC ONLY)
CNTL control is disabled.
The external signal controls
the brightness. Connect
CNTL to an analog voltage
in case the external sync
signal is lost.
Connect SEL to V
The internal oscillator is not
active. Connect a resistor to
GND in case the external
sync signal is lost.
The internal oscillator is not
active. Connect a resistor to
GND in case the external
sync signal is lost.
Connect to the HFCK pin of
its slave controller. Connect
1MΩ resistor to GND. See
Note 1.
Connect to the LFCK pin of
its slave controller. Connect
1MΩ resistor to GND. See
Note 1.
Connect to a high-
frequency external signal to
sync the switching
frequency.
Connect a low-frequency
external signal to sync the
DPWM frequency. The duty
cycle of the external signal
determines the brightness.
Connect to the HF pin of its
slave controller.
Connect to the LF pin of its
slave controller.
EXTERNAL SYNC SIGNAL
MASTER MODE USING
(SYNC AND DIMMING)
CC
.
Connect CNTL to V
Don’t care.
Connect to the PSCK
pin of its master
controller.
Connect to the DPWM
pin of its master
controller.
Connect to the HFCK
pin of its master
controller. Connect
1MΩ resistor to GND.
See Note 1.
Connect to the LFCK
pin of its master
controller. Connect
1MΩ resistor to GND.
See Note 1.
Not used. Connect to
GND.
Not used. Connect to
GND.
Connect to the HF pin
of its slave controller.
Connect to the LF pin of
its slave controller.
SLAVE MODE
CC
.