Marktech TB62701AN Datasheet
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TB62701AN
16 Bit Constant Current LED Driver with Shift Register and Latch Functions
Product Description:
The TB62701AN is specifically designed for LED display applications. The Bi-CMOS device has
16 Bi-polar constant current output channels and includes CMOS shift register and latch functions.
The LED drive current is programmed by the
installation of a single resistor per device.
Current is programmable from 5-50mA and is
held constant across all 16 outputs effectively
compensating for the inherent circuit and
component variables which affect the brightness of the LEDs.
Features:
• 16 Constant Current Output Channels
• Current Programmable from 5-50mA
• 5V CMOS Compatible Inputs
• Supports up to a 30V LED Supply Voltage
TB62701AN
SDIP24-P-300
Weight: 1.2g(typ)
Block Diagram:
marktech
optoelectronics
For up-to-date product info visit our web site at www.marktechopto.com All specifications subject to change.
536
Toll Free: (800) 98-4LEDS
120 Broadway • Menands, New York 12204
• Fax: (518) 432-7454
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TB62701AN
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Timing Diagram:
Terminal Description & Pin Out:
PIN No. PIN NAME FUNCTION
1 GND GND terminal for control logic driver
2 SERIAL-IN Serial data input terminal for shift register
3 CLOCK Clock input terminal for data shift to up-edge
4 LATCH "H" : data through, "L" : data hold
24 V
5~12
13~20
OUTn Output terminals
DD
Supply voltage terminal
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21 ENABLE
22 SERIAL-OUT Serial data output terminal for shift register
23 R-EXT
marktech
optoelectronics
For up-to-date product info visit our web site at www.marktechopto.com All specifications subject to change.
"H" output off, "L" : latch data = "H" then output on,
latch data = "L " then output off
The register which connects between R-EXT and GND sets the constant
output current.
120 Broadway • Menands, New York 12204
Toll Free: (800) 98-4LEDS
• Fax: (518) 432-7454
537
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A Bi-CMOSA Bi-CMOS
A Bi-CMOS
A Bi-CMOSA Bi-CMOS
Constant CurConstant Cur
Constant Cur
Constant CurConstant Cur
TB62701ANTB62701AN
TB62701AN
TB62701ANTB62701AN
Truth Table:
INP UT OUTPUT OUTn (t = n)
CLOC K LATCH ENAB LE SE RIAL-IN OUT0 OUT7 OUT15 SERIAL-OUT
Up H L DN DN DN -7 DN-15 DN-15
Up L L DN No Change DN-15
Up
Down ∗∗DN No Change No Change
Equivalent Circuit of Inputs and Outputs:
∗
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H DN OFF OFF OFF DN-15
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Maximum Ratings:
CH ARACT ER SYMBOL RATING UNIT
Supp ly Volta ge VD D 0~+7.0 V
Output Voltag e V OUT -0.5~+30 V
Output Current IOUT 50 mA
Input Voltage VIN -0.4~VDD + 0.4 V
GND Terminal Current IGND 800 mA
Clock Frequency FCLK 2.5 MHz
Power Dissipation PD 1.78 W
Operating Temperature Topr -40~+85 °C
Storage Temperature Tstg -55~+150 °C
marktech
optoelectronics
For up-to-date product info visit our web site at www.marktechopto.com All specifications subject to change.
538
Toll Free: (800) 98-4LEDS
120 Broadway • Menands, New York 12204
• Fax: (518) 432-7454
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