Marktech TB62707F Datasheet
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TB62707F
8 Bit Constant Current LED Driver with Latch Function
Product Description:
The TB62707F is specifically designed for LED display applications. The Bi-CMOS device has 8
Bi-polar constant current output channels and includes CMOS latch function.
The LED drive current is programmed by the
installation of a single resistor per device.
Current is programmable from 5-90mA and is
held constant across all 8 outputs effectively
compensating for the inherent circuit and
component variables which affect the brightness
of the LEDs.
Features:
• 8 Constant Current Output Channels
• Current Programmable from 5-90mA
• 5V CMOS Compatible Inputs
• Surface Mount Package
TB62707F
SSOP24-P-300
Weight: 0.32g(typ)
Block Diagram:
marktech
optoelectronics
For up-to-date product info visit our web site at www.marktechopto.com All specifications subject to change.
566
Toll Free: (800) 98-4LEDS
120 Broadway • Menands, New York 12204
• Fax: (518) 432-7454
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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
TB62707FTB62707F
TB62707F
TB62707FTB62707F
Timing Diagram:
Latches are:
1. Level Sesitive
2. Not edge sensitive
3. Not clock synchronous
4. Passing Data when LATCH is H
5. Hold Data when LATCH is L
All Outputs are OFF when ENABLE is H and ON when ENABLE is L.
Terminal Description & Pin Out:
PIN No. PIN NAME FUNCTION
12 L-GND GND terminal for control logic.
13,2 2 P-GND GNt terminal fo r output c onstant c urrent dr ivers.
4~11 IN0~7 Iinput terminal of a parallel-data for latches.
1LATCH
14~21
OUT0~7 Output terminals.
Input terminal of a data strobe. Latches passes data with "H" level input of
LATC H-terminal, a nd hold da ta wi th "L" leve l input.
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2ENABLE
23 R-EXT Input terminal of connects with a resister for to set up all output current.
24 VDD 5V Supply voltage terminal
marktech
optoelectronics
For up-to-date product info visit our web site at www.marktechopto.com All specifications subject to change.
Input termi nal o f output enable . All o utputs (OUT0~7 ) do off wi th "H" level i nput
of ENABLE-terminal, and do on with "L" level input.
120 Broadway • Menands, New York 12204
Toll Free: (800) 98-4LEDS
• Fax: (518) 432-7454
567
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OSHIBOSHIB
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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
TB62707FTB62707F
TB62707F
TB62707FTB62707F
Truth Table:
IN0~7 LATCH ENABLE OUT 0~7
LL LOFF
HL LOFF
LH LOFF
HH LON
LLOFF
HLON
HHOFF
Equivalent Circuit of Inputs and Outputs:
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marktech
optoelectronics
For up-to-date product info visit our web site at www.marktechopto.com All specifications subject to change.
568
Toll Free: (800) 98-4LEDS
120 Broadway • Menands, New York 12204
• Fax: (518) 432-7454
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