JBT6K49-AS Datasheet, PDF (7/14 Pages) Toshiba Semiconductor – Power supply IC for TFT LCD Panels

Pin Function Description (2)
JBT6K49-AS
Pin Name
CB1+、CB1-
CB2+、CB2-
CB3+、CB3-
CB4+、CB4-
CB5+、CB5-
V_TOUT
V_TIN
CC1+、CC1-
V_BOUT
/STB
/RST
POL
VLC
/VLC
I/O
Function
I/O DC-DC converter 2 capacitor connection pins
Connect these pins to external voltage booster capacitors in order to generate negative
voltages for the T6K48. The recommended capacitance for the capacitors is 1 mF.
O DC-DC converter 2 output pin
This pin outputs the supply high-level voltage (+13 V) used for the T6K48.
I
DC-DC converter 3 supply voltage input pin
The voltage for DC-DC converter 3 used to generate a voltage on the VBOUT pin is input on
this pin. It must be connected to the VTOUT pin.
I/O DC-DC converter 3 capacitor connection pins
Connect these pins to an external voltage booster capacitor in order to generate negative
voltages for the T6K48. The recommended capacitance for the DC-DC converter capacitor is 1
mF.
O DC-DC converter 3 output pin
This pin outputs the supply low-level voltage (-13 V) used for the T6K48.
I
Standby signal input pin
The chip stays in standby state while /STB = L. Enabling the /STB pin halts all the built-in
circuits.
I
Reset signal input pin
A reset signal must be input on this pin after the power is turned on.
I
Alternating signal input pin
This POL signal inverts the phase of the COMOUT, VLC and /VLC signals. See Fig. 2 for an
explanation of how to invert the phase.
¾ g-correction power supply voltage pin
This pin outputs a voltage whose phase is under the control of the POL signal. The following
table lists the output voltages and their phases.
POL
H
L
VLC
VSO
0V
BVLC
0V
VSO
COMOUT
EXP
O Common signal output pin
This pin outputs, in phase with the POL signal, a signal whose level has been converted to the
board level necessary for the LCD.
I
DC-DC converter ON/OFF switching pin
This pin is used to turn the DC-DC converters ON/OFF. Normally it should be connected to
GND.
7
2002-03-12