TOSHIBA
TB62726AN, TB62726AF
TOSHIBA Bi-CMOS INTEGRATED CIRCUIT SILICON MONOLITHIC
T B 6 2 7 2 6 A N, T B 6 2 7 2 6 A F
16-bit constant current LED driver with operating supply of 3.3V to 5V
The TB62726A series are through hole and surface mount constant-current drivers
designed for LEDs and LED displays. The output current value can
be set using an external resistor. As a result, all outputs will have
TB62726AN
virtually the same current levels. This driver incorporates 16-bit
constant-current outputs, a 16-bit shift register, a 16-bit latch and
16-bit AND-gate circuit. These drivers have been designed using
a Bi-CMOS process.
Feature
*Output current capability and the number of output:
90 mA x 16 outputs
P-SDIP24-300-1.78
*Constant current range : 2 to 90 mA
TB62726AF
*Application output voltage :
0.7V (output current 2 to 80mA)
0.4V (output current 2 to 40mA)
*For anode common LED
*Input signal voltage level :
3.3V-5.0V CMOS level (schmitt trigger input)
*Power supply voltage range VDD=3.0 to 5.5V
*Maximum output terminal voltage 17V
*Serial and parallel data transfer rate 20 MHz (Cascade Connection)
*Operation temperature range topr = -40 to 85 degrees
*Package : AN type - - - P-SDIP-300-1.78
AF type - - - P-SSOP24-300-1.00B
*Current accuracy (Dot current correction not used)
Output
voltage
>= 0.4V
>= 0.7V
Current accuracy
between bits
+/- 4 %
between ICs
+/- 12 %
Output
current
2 to 40 mA
2 to 90 mA
Company Headquarters
120 Broadway
Menands, New York 12204
Toll Free: 800.984.5337
Fax: 518.432.7454
Web: www.marktechopto.com | Email: info@marktechopto.com
West Coast Sales Office
100 Oceangate Blvd. #1200
Long Beach, CA 90802
Toll Free: 800.984.5337
Fax: 562.628.5572
1
TOSHIBA
Package and pin layout ( Top view )
GND
SERIAL-IN
CLOCK
LATCH
OUT 0
OUT 1
OUT 2
OUT 3
OUT 4
OUT 5
OUT 6
OUT 7
TB62726AN, TB62726AF
VDD
R-EXT
SERIAL-OUT
ENABLE
OUT 15
OUT 14
OUT 13
OUT 12
OUT 11
OUT 10
OUT 9
OUT 8
Warnings : Short-circuiting an output terminal to GND or to the power supply terminal may damage the device. Please
take the proper precautions when wiring the output terminals, the power supply terminal and GND terminals.
Block Diagram
OUT0
R-EXT
I-REG
OUT1
OUT15
ENABLE
Q
ST D
LATCH
Q
ST D
Q
ST D
SERIAL-IN
D Q
CK
D Q
CK
D Q
CK
SERIAL-OUT
CLOCK
Truth Table
CLOCK
Positive edge
Positive edge
Positive edge
Negative edge
Negative edge
LATCH
H
L
H
X
X
ENABLE
L
L
L
L
H
SERIAL-IN
Dn
Dn+1
Dn+2
Dn+3
Dn+3
OUT0 --- OUT7 --- OUT15
Dn --- Dn-7 --- Dn-15
No Change
Dn+2 --- Dn-5 --- Dn-13
Dn+2 --- Dn-5 --- Dn-13
Off
SERIAL-OUT
Dn-15
Dn-14
Dn-13
Dn-13
Dn-13
Note 1: OUT0~OUT15=ON when Dn=H ; OUT0~OUT15=OFF when Dn=L
In order to ensure the level of power supply voltage is correct, an external resistor is required
between R-EXT and GND.
Company Headquarters
120 Broadway
Menands, New York 12204
Toll Free: 800.984.5337
Fax: 518.432.7454
West Coast Sales Office
100 Oceangate Blvd. #1200
Long Beach, CA 90802
Toll Free: 800.984.5337
Fax: 562.628.5572
Web: www.marktechopto.com | Email: info@marktechopto.com
2
TOSHIBA
Timing diagram
n=0 1 2 3 4 5 6 7 8 9 101112131415
CLOCK
TB62726AN, TB62726AF
3.3v/5v
0V
3.3v/5v
0V
3.3v/5v
0V
3.3v/5v
0V
On
Off
On
Off
On
Off
SERIAL-IN
LATCH
ENABLE
OUT0
OUT1
OUT3
OUT15
On
Off
3.3v/5v
0V
SERIAL-OUT
Warning :
The Latch circuit is a leveled-latch circuit, not a triggered-latch circuit.
Note 2 :
The latch circuit holds data by pulling the LATCH terminal Low. When the LATCH terminal is at a High-level, the latch
circuit doesn’t hold data, and it passes from the input to the output. When the ENABLE terminal is at a Low-level, the output
terminal OUT0~OUT15 responds to the data, turning on and off.
When the ENABLE terminal is at a High-level, it turns off with the output terminal regardless of the data.
Company Headquarters
120 Broadway
Menands, New York 12204
Toll Free: 800.984.5337
Fax: 518.432.7454
Web: www.marktechopto.com | Email: info@marktechopto.com
West Coast Sales Office
100 Oceangate Blvd. #1200
Long Beach, CA 90802
Toll Free: 800.984.5337
Fax: 562.628.5572
3
TOSHIBA
Terminal description
Pin No.
1
2
3
4
5 ~ 20
OUT 0 ~ 15
21
22
23
24
Pin Name
GND
SERIAL-IN
CLOCK
LATCH
Function
TB62726AN, TB62726AF
GND terminal for control logic
Input terminal for serial data for data shift register
Input terminal for clock for data shift on rising edge
Input terminal for data strobe. When the LATCH=High-level, data is not latched. When
the LATCH=Low-level, data is latched.
Constant-current output terminals
Input terminal for output enable.
All outputs (OUT0 ~ OUT15 ) are turned off, when the ENABLE=High-level,
and are turned on, when the ENABLE=Low-level.
SERIAL-OUT Output terminal for serial data input on SERIAL-IN terminal
R-EXT
Input terminal used to connect an external resistor.
This regulates the output current.
VDD
3.3V - 5V supply voltage terminal.
ENABLE
Equivalent circuit of inputs and output
1. ENABLE Terminal
VDD
ENABLE
GND
3. CLOCK,SERIAL-IN Terminal
VDD
CLOCK,
SERIAL - IN
GND
5. OUT0 ~ 15 Terminal
OUT 0 ~ 15
Parasitic Diode
2. LATCH Terminal
R(UP)
200k
VDD
LATCH
GND
250k
R(DOWN)
4. SERIAL-OUT Terminal
VDD
Internal data
GND
SERIAL - OUT
GND
Company Headquarters
120 Broadway
Menands, New York 12204
Toll Free: 800.984.5337
Fax: 518.432.7454
Web: www.marktechopto.com | Email: info@marktechopto.com
West Coast Sales Office
100 Oceangate Blvd. #1200
Long Beach, CA 90802
Toll Free: 800.984.5337
Fax: 562.628.5572
4
TOSHIBA
Absolute maximum ratings
Characteristics
Supply Voltage
Input Voltage
Output Current
Output Voltage
Power Dissipation
Thermal Resistance
Operating Temperature
Storage Temperature
Symbol
V
DD
V
IN
I
OUT
V
OUT
P
d
1
P
d
2
R
th(j-a)
1
R
th(j-a)
2
T
opr
T
stg
Rating
+6
TB62726AN, TB62726AF
Unit
V
mA/ch
V
W
degree/W
degree
-0.2 to VDD+0.2
+90
-0.2 to 17
AN type : 1.25(Free air), 1.78(On PCB)
AF type : 0.83(Free air), 1.00(On PCB)
AN type : 104(Free air), 70(On PCB)
AF type : 140(Free air), 120(On PCB)
-40 to 85
-55 to 150
Note 3: AN-type: Power dissipation is derated by 14.28 mW/degree if device is mounted on PCB and
ambient temperature is above 25 degree.
FN-type: Power dissipation is derated by 6.67 mW/degree if device is mounted on PCB and
ambient temperature is above 25 degrees.
With device mounted on glass-epoxy PCB of less than 40% Cu and of dimensions
50mm x 50 mm x 1.6mm.
Recommended operating condition
( Topr = -40~85 degree, unless otherwise noted. )
Characteristics
Supply Voltage
Output Voltage
Output Current
Symbol
V
DD
V
OUT
(On)
I
OUT
I
OH
I
OL
V
IH
V
IL
f
CLK
t
w LATCH
t
w CLOCK
Upper I
OUT
=20mA
t
w ENABLE
Lower I
OUT
=20 mA
t
SETUP
1
t
HOLD
t
SETUP
2
3000
10
-
50
-
-
-
-
-
-
ns
Condition
-
-
Each DC 1 Circuit
SERIAL-OUT
-
Min
3
-
2
-
-
0.7VDD
-0.15
-
50
25
2000
Typ
-
0.7
-
-
-
-
-
-
-
-
-
Max
5.5
4
80
-1
1
VDD+0.15
0.3xVDD
20
-
-
-
Unit
V
V
mA/ch
mA
V
MHz
Input Voltage
Clock Frequency
LATCH Pulse Width
CLOCK Pulse Width
ENABLE Pulse Width
When the pulse of the Low level is
inputted to the ENABLE terminal
held in the H level.
Setup Time for CLOCK Terminal
Hold Time for CLOCK Terminal
Setup Time for /LATCH Terminal
Cascade Connected
Note 4: When the pulse of the “L” level is inputted to the ENABLE terminal held in the “H” level.
Company Headquarters
120 Broadway
Menands, New York 12204
Toll Free: 800.984.5337
Fax: 518.432.7454
Web: www.marktechopto.com | Email: info@marktechopto.com
West Coast Sales Office
100 Oceangate Blvd. #1200
Long Beach, CA 90802
Toll Free: 800.984.5337
Fax: 562.628.5572
5
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