TB62D786FTG
TOSHIBA BiCD Process Integrated Circuit Silicon Monolithic
TB62D786FTG
9-channel constant current LED driver with single wire
The TB62D786FTG is a constant current driver designed for LED
illumination. This product incorporates 7-bit PWM dimming controllers
and 9-channel constant current drivers. 9-channel constant current
drivers are divided into three blocks corresponding to LED
luminescence colors, and each output current can be adjusted by
external resistors.
This product is controlled using the only DATA-IN input signal. It can
be configured up to 64 recognition addresses with the ID setting pin.
This product includes a linear regulator (7.0 to 28 V) function, which
shares with the power supply of LEDs.
Additionally, data can be transferred at high speed with BiCD process.
TB62D786FTG
P-VQFN24-0404-0.50-001
Weight: 0.037g (typ.)
Feature
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•
•
•
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Power supply voltage : VL = 7.0
to
28 V (The case used by sharing with a power supply of LED)
Vcc = 5.0 V±10% (The case that the power supply of LED and that of this IC separately. )
Maximum output current capability:80 mA (max) × 9 channels
Constant current output range:
Designed for common-anode LEDs.
5
to
40 mA
Output voltage at constant-current drive: 0.4 V(min) @I
OUT
=5
to
40 mA
The input interface is controlled by DATA-IN (Single wire)
Thermal shut down (TSD) included.
Input and output of logic circuit:
Maximum output voltage:
PWM control circuit included:
Driver recognition:
Operating temperature range:
Package:
Constant current accuracy
Condition
Output voltage: 0.5 V
Output current: 15 mA
Constant-current accuracy
between channels
±3.0%
Constant-current accuracy
between ICs
±6.0%
5 V CMOS Interface
28 V
7-bit PWM
Up to 64 driver ICs can be controlled individually
T
opr
= -40 to 85°C
P-VQFN24-0404-0.50-001
This product is very delicate because of elements of MOS structure. In handling, please take care of measures of static
electricity, such as use of a ground band or an electric conduction mat, removal of static electricity by an ionizer, and
management of temperature and humidity.
© 2016-2018
Toshiba Electronic Devices & Storage Corporation
1
2018-08-02
TB62D786FTG
Pin Assignment
(top view)
16 DATA-OUT
17 DATA-IN
15 Vcc
14 ID2
5
18 NC
3
1
2
4
5
13 ID1
3
4
1
/OUTR1 1
/OUTG1 2
2
/OUTB1 3
/OUTR2 4
/OUTG2 5
5
Please be sure to connect the back radiation PAD of a QFN package to GND of a substrate.
Block diagram
Vcc
VLOUT
/OUTB2 6
5
Power
supply
ID0
ID1
ID2
VLED
(5V REG)
Address
setting
PWM(7-bit)
Constant
current
driver
Constant
current
driver
Constant
current
driver
Constant
current
driver
Constant
current
driver
Constant
current
driver
Constant
current
driver
Constant
current
driver
Constant
current
driver
PWM(7-bit)
PWM(7-bit)
PWM(7-bit)
DATA-IN
Logic process
PWM(7-bit)
PWM(7-bit)
PWM(7-bit)
PWM(7-bit)
Oscillator
PWM(7-bit)
DATA-OUT
GND
REXT-G
PGND
Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for explanatory
purposes.
2
1
1
/OUTB0 24
2
2
/OUTG0 23
3
3
/OUTR0 22
TOP VIEW
4
4
VL 21
5
5
NC 20
5
5
VLOUT 19
12 ID0
11 GND
10 REXT-B
9
8
7
REXT-G
REXT-R
PGND
VL
REXT-R
/OUTR0
/OUTR1
/OUTR2
/OUTG0
/OUTG1
/OUTG2
/OUTB0
/OUTB1
/OUTB2
REXT-B
2018-08-02
TB62D786FTG
Pin Description
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Symbol
/OUTR1
/OUTG1
/OUTB1
/OUTR2
/OUTG2
/OUTB2
PGND
REXT-R
REXT-G
REXT-B
GND
ID0
ID1
ID2
Vcc
DATA-OUT
DATA-IN
NC
VLOUT
NC
VL
/OUTR0
/OUTG0
/OUTB0
Function description
Constant current output pin. (Open-drain type)
Constant current output pin. (Open-drain type)
Constant current output pin. (Open-drain type)
Constant current output pin. (Open-drain type)
Constant current output pin. (Open-drain type)
Constant current output pin. (Open-drain type)
Power ground pin
External resistor pin for output current configuration (/OUTR0, /OUTR1, /OUTR2)
External resistor pin for output current configuration (/OUTG0, /OUTG1, /OUTG2)
External resistor pin for output current configuration (/OUTB0, /OUTB1, /OUTB2)
Ground pin
ID configuration pin
ID configuration pin
ID configuration pin
5V of supply voltage input pin
Serial data output pin (DATA-in input signal is output to the buffer.)
Serial data input pin
Non-connection pin. Please connect to GND or Vcc.
5V Regulator output pin. Please connect VLOUT and Vcc when it use included regulator.
In case it inputs 5V direct to Vcc pin please VLOUT connect to GND pin.
Non-connection pin. Please connect to GND or open. (Note 1)
Power supply input pin in the case of sharing a power supply of LED and the power supply of this
product.
Constant current output pin. (Open-drain type)
Constant current output pin. (Open-drain type)
Constant current output pin. (Open-drain type)
Note 1: Please pay attention to short circuiting between adjacent pins when pin 20 is connected to GND.
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2018-08-02
TB62D786FTG
Equivalent circuit for inputs and outputs
Pin No.
DATA-IN
VCC
Vcc
Equivalent circuit
DATA-IN
GND
DATA-OUT
VCC
Vcc
DATA-OUT
GND
ID0
to
2
VCC
Vcc
Comparator
コンパレータ
3 to 2 decoder
3 to 2
デコーダ
A2
Q1
A1
Q0
ID0
ID1
ID2
VCC-2Vf
A0
GND
/OUTR0
to
2
/OUTG0
to
2
/OUTB0
to
2
OUTR0~2
OUTG0~2
OUTB0~2
PGND
The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purposes.
4
2018-08-02
TB62D786FTG
Programming the TB62D786FTG
This product is controlled with single wire data signal shown in the following. As compared with 2-wire data signal
synchronous with the clock signal in conventional products, this product assigns each data to the transition of potential
(H to L or L to H).
SDA
2-wire input data
Single wire input data
H
L
SCLK
DATA-IN
H
L
L
H
(1) Data setting format
Each command setting input to DATA-IN is set with the following format.
This product recognizes the communication frequency (rising interval of input data) by taking in the start command
(the start condition of data input).
Start command : 1010101010101010=0xAA, 0xAA (original binary: 11111111)
Since this product continues to recognize the signal interval which recognizes at the start command until the period
command, input the pulse width so that the period is not collapsed until completion of the period command.
Period command : 1001010101010110=0x95,0x56 (original binary: 10000001)
After the completion of the period command input, make sure to set the interval ("L") more than 10
μs
just before next
start command input.
<Input format>
Ex.) Basic input mode
Interval more
than10µs
DATA-IN
Period
command
[10000001]
L input
Start
command
[11111111]
Slave
address
Sub address
Data byte
Period
command
[10000001]
L input
Start
command
[11111111]
Example 1) Start command setting 0xAA, 0xAA (original binary 11111111)
DATA-IN
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
"1"
"1"
"1"
"1"
"1"
"1"
"1"
"1"
Example 2) Period command setting [original binary 10000001]
DATA-IN
H
L
L
H
L
H
L
H
L
H
L
H
L
H
H
L
"1"
"0"
"0"
"0"
"0"
"0"
"0"
"1"
5
2018-08-02
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