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PDF TB62726N Data sheet ( Hoja de datos )
| Número de pieza | TB62726N | |
| Descripción | 16 BIT CONSTANT CURRENT LED DRIVER WITH OPERATING VOLTAGE OF 3.3 V | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62726N, TB62726F
16-bit Constant-Current LED Driver with Operating Voltage of 3.3 V
TB62726N/F
The TB62726 series is comprised of 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 virtually the same current
levels.
This driver incorporates a 16-bit constant-current output, a
16-bit shift register, a 16-bit latch and a gate circuit.
These drivers have been designed using the Bi-CMOS process.
TB62726N
Features
• Output current capability and number of outputs:
90 mA × 16 outputs
TB62726F
• Constant current range: 2~80 mA
• Application output voltage:
0.7 V (output current 2~80 mA)
0.4 V (output current 2~40 mA)
• For anode-common LEDs
• Input signal voltage level: 3.3-V CMOS level (Schmitt trigger
input)
• Maximum output terminal voltage: 17 V
• Serial data transfer rate: 20 MHz (max, cascade connection)
Weight:
SDIP24-P-300-1.78: 1.22 g (Typ.)
SSOP24-P-300-1.00B: 0.32 g (Typ.)
• Operating temperature range Topr = −40~85°C
• Package:
Type N: SDIP24-P-300-1.78
Type F: SSOP24-P-300-1.00B
• Package and pin layout: Pin layout and functionality are similar to those of the TB62706. (Each characteristic
value is different.)
• Constant-current accuracy (all outputs on)
Output voltage
Current accuracy
between bits between ICs
Output current
>= 0.7 V
±4%
±15%
±12%
2~5 mA
5~80 mA
1 2001-06-01
1 page  
TB62726N/F
Maximum Ratings (Topr = 25°C)
Characteristics
Symbol
Rating
Unit
Supply voltage
Input voltage
Output current
Output voltage
N-type
(when not mounted)
Power
Dissipation
N-type (on PCB)
(Note 3)
F-type
(when not mounted)
F-type (On PCB)
N-type
(when not mounted)
Thermal
Resistance
N-type (on PCB)
(Note 3)
F-type
(when not mounted)
F-type (On PCB)
Operating Temperature
Storage Temperature
VDD
VIN
IOUT
VOUT
Pd1
Pd2
Rth (j-a) 1
Rth (j-a) 2
Topr
Tstg
6
−0.2~VDD + 0.2
+90
−0.2~17
1.25
1.78
0.83
1.00
104
70
140
120
−40~85
−55~150
V
V
mA/ch
V
W
°C/W
°C
°C
Note 3: N-Type: Powes dissipation is derated by 14.2 mW/°C if device is mounted on PCB and ambient temperature
is above 25°C.
F-Type: Powes dissipation is derated by 8.3 mW/°C if device is mounted on PCB and ambient temperature
is above 25°C.
With device mounted on glass-epoxy PCB of less than 40% Cu and of dimensions
50 mm × 50 mm × 1.6 mm.
Recommended Operating Conditions (Topr = −40°C ~85°C unless otherwise specified)
Characteristics
Symbol
Conditions
Min Typ. Max Unit
Supply voltage
Output voltage
Output current
Input voltage
Clock frequency
LATCH pulse width
ENABLE pulse width
(Note 4)
CLOCK pulse width
Set-up time for CLOCK terminal
Hold time for CLOCK terminal
Set-up time for LATCH terminal
VDD
VOUT
IOUT
IOH
IOL
VIH
VIL
fCLK
twLAT
twENA
twCLK
tSETUP1
tHOLD
tSETUP2
Each DC 1 circuit
SERIAL-OUT
SERIAL-OUT
Cascade Connected
IOUT >= 20 mA
IOUT <= 20 mA
3 3.3 3.6 V
0.7
4
V
2 80 mA/ch
−1
mA
1
0.7 ×
VDD
VDD +
0.15
V
−0.15
0.3 ×
VDD
20 MHz
50 ns
2
µs
3
25
5
ns
10
50
Note 4: When the pulse of the “L” level is inputted to the ENABLE terminal held in the “H” level.
5
2001-06-01
5 Page 
Application Notes (example 2)
TB62726N/F application circuit (for VLED > 17 V)
Example: An unnecessary voltage in the case of VLED > 17 V makes a voltage descend by the Zener diode.
TB62726N/F
Example: TD62M8600F 8-bit multi-chip PNP transistor
array, which is not used in static lighting
system.
VLED > 17 V
C.U.
SCAN
SERIAL-IN
ENABLE
LATCH
CLOCK
O0 O1 O2
O13 O14 O15
16-Bit SIPO. Latches and
Constant-Sink-Current Drivers
SERIAL-IN
SERIAL-OUT
ENABLE
TB62726N/F
LATCH
CLOCK
O0 O1 O2
O13 O14 O15
16-Bit SIPO. Latches and
Constant-Sink-Current Drivers
SERIAL-OUT
TB62726N/F
r1
r2
r1: Resistance for setting up output current
r2: Resistance for LED module brightness adjustment
11
r1
2001-06-01
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet TB62726N.PDF ] | |
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