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JBT6K49-AS Schematic ( PDF Datasheet ) - Toshiba Semiconductor

Teilenummer JBT6K49-AS
Beschreibung Power supply IC
Hersteller Toshiba Semiconductor
Logo Toshiba Semiconductor Logo 




Gesamt 14 Seiten
JBT6K49-AS Datasheet, Funktion
www.DataSheet4U.com
JBT6K49-AS
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
JBT6K49-AS
Power supply IC for TFT LCD Panels
The JBT6K49-AS chip is an integrated circuit (IC) for generating the supply voltages necessary for a TFT LCD
panel driver. When used in combination with the T6K47 source driver and the T6K48 gate driver for TFT LCD
panels, the JBT6K49-AS enables the module set to operate with low power consumption.
A high-speed CMOS process is employed to achieve low power consumption and high-speed operation for the
JBT6K49-AS.
Features
· Built-in circuits
: DC-DC converters and oscillation circuit for DC-DC converters
High-precision regulator
Binary buffer for γ-correction
Level shifter circuit for Vcom
· Supply voltage (VDD) : 2.7 V to 3.3 V
· Supply voltage (VBAT) : 2.7 V to 4.2 V
· Low power consumption
· Operating temperature : 20°C to 75°C
· CMOS process
· Recommended drivers : T6K47 source driver for TFT LCD
T6K48 gate driver for TFT LCD
· Package
:
Product Name
Description
JBT6K49-AS (PI)
Gold bump chip
1 2002-03-12






JBT6K49-AS Datasheet, Funktion
www.DataSheet4U.com
Pin Function Description (1)
JBT6K49-AS
Pin Name
CKSEL
EXTCK
FSEL1
FSEL2
I/O Function
I External clock pulse selection pin
CKSEL = “L”・・・the built-in oscillator is used.
CKSEL = “H”・・・an external clock pulse is accepted. It must be input on the EXTCK pin.
I/O External clock pulse input pin
Input an external clock pulse on this pin if External Clock Pulse Supply Mode has been
selected. If the built-in oscillator is selected (Self-Oscillation Mode), this pin must be fixed Low.
I Oscillation frequency switching input pins
These pins can be used to select the oscillation frequency for the DC-DC converters.
FSEL2
0
0
1
1
FSEL1
0
1
0
1
DC-DC converter clock frequency
(typ.)
3.5 kHz
5.0 kHz
7.5 kHz
10.0 kHz
CA1+CA1-
CA2+CA2-
VSOUT1
VSOUT2
VSIN
VREFIN
VREF
I/O DC-DC converter 1 capacitor connection pins
These pins can be connected to voltage booster capacitors. The recommended capacitance for
the DC-DC converter capacitors is 1 mF.
O DC-DC converter 1 output pins
These pins output the supply voltage (AVDD) for the T6K47. They are electrically connected via
an aluminum wire inside the IC chip.
Normally a capacitor with a capacitance of approximately 10 mF is connected across the VSS
pins in order to maintain the voltage level.
I DC-DC converter 1 power supply input pin
This is the power supply feedback pin for DC-DC converter 1. It is normally connected to the
VSOUT1 pin.
I Reference voltage input pin
An operational-amplifier output feedback voltage is input on this pin to generate the VS voltage.
It should normally be connected to the VREF pin.
O Reference power supply output pin
This is an operational-amplifier output pin which generates the VS voltage. It is normally
connected to a capacitor with a capacitance of 0.1 mF to 0.47 mF. The capacitance should be
adjusted as necessary to suit the conditions in which the device is used.
6 2002-03-12

6 Page









JBT6K49-AS pdf, datenblatt
www.DataSheet4U.com
JBT6K49-AS
DC Characteristics (3)
(unless otherwise specified, VDD = 2.7 V to 3.3 V, VBAT = 2.7 V to 4.2 V and Ta = -20°C to 75°C)
Characteristics
Test
Symbol Circuit Test Condition
Min Typ. Max Unit
Related Pins
VSO1
Iload = 42 mA
¾
Ta = 25°C
4.75 4.80 4.85
DC-DC Converter Characteristic
(1)
VSO2
Iload = 42 mA
¾ Ta = -20°C
Ta = 75°C
4.75 4.80 4.90
V
VSOUT
DC-DC Converter Characteristic
(2)
DC-DC Converter Characteristic
(3)
VSO3
VTO1
VTO2
VBO1
VBO2
¾ Iload = 2.5mA
¾ Iload = 0 mA
¾ Iload = 100 mA
¾ Iload = 0 mA
¾ Iload = 100 mA
4.70
¾
12.3
-13.7
¾
¾
13.0
¾
-13.0
¾
¾
13.7
¾
¾
-12.3
V
V
VTOUT
VBOUT
DC Characteristics (4)
(unless otherwise specified, VDD = 2.7 V to 3.3 V, VBAT = 2.7 V to 4.2 V and Ta = -20°C to 75°C)
Characteristics
Symbol
Test
Circuit
Test Condition
Min Typ. Max Unit
Related Pins
g-Output Voltage Characteristic
(1)
g-Output Voltage Characteristic
(2)
VLC1H
VLC2H
VLC1L
VLC2L
¾
POL = “H”
¾
¾
POL = “L”
¾
VSO1
- 0.05
VSO1
VSO1
+ 0.05
- 0.05 0
0.05
- 0.05 0
0.05
VSO1
- 0.05
VSO1
VSO1
+ 0.05
V
V
V
V
VLC
/VLC
VLC
/VLC
COM Output Voltage
Characteristic
VcomL
VcomH
¾ POL = “L”
¾ POL = “H”
- 0.05 0
0.05
VSO1
- 0.05
VSO1
VSO1
+ 0.05
V
V
COMOUT
12 2002-03-12

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