Marktech TB62705CP, TB62705CFN, TB62705CF Datasheet
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A Bi-CMOSA Bi-CMOS
A Bi-CMOS
A Bi-CMOSA Bi-CMOS
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TB62705CP/CF/CFN
8 Bit Constant Current LED Driver with
Shift Register and Latch Functions
Product Description:
The TB62705CP/CF/CFN is specifically designed
for LED display applications. The Bi-CMOS device
has 8 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 5-90mA 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
• 15MHz Max Clock Frequency (Cascade)
Block Diagram:
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TB62705CP
DIP16-P-300-2.54A
Weight: 1.11g(typ)
TB62705CF
SSOP16-P-225-1.00A
Weight: 0.14g(typ)
TB62705CFN
NEW! Ultra Small Surface Mount Package
SSOP16-P-225-0.65B
Weight: 0.07g(typ)
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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.
546
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
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TB62705CP/CF/CFN
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
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All Outputs are OFF when ENABLE is H and ON when ENABLE is L.
Terminal Description & Pin Out:
PIN No. PIN NAME FUNCTION
1 GND GND terminal for c ontrol logic
2 SERIAL-IN Input terminal of a serial-data for shift register
3 CLOCK Input terminal of a clock for data shift up to edge.
4LATCH
5~12
13 ENABLE
14 SERIAL-OUT Output terminal of seria l data for next SERIAL-IN terminal.
15 R-EXT Constant Current Programming through external resistor
16 VDD 5V Supply voltage terminal
OUT0~7 Output termi nals
marktech
optoelectronics
For up-to-date product info visit our web site at www.marktechopto.com All specifications subject to change.
Inout terminal of a data strobe. (Latches pass data with "H" level inputof
LATCH-terminal, and hold data with "L" level input.)
Input Teminal of output enable. (All outputs (OUT0~7) do off with "H" level
input of ENABLE terminal, and on with "L"level input.)
120 Broadway • Menands, New York 12204
Toll Free: (800) 98-4LEDS
• Fax: (518) 432-7454
547
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A Bi-CMOSA Bi-CMOS
A Bi-CMOS
A Bi-CMOSA Bi-CMOS
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Constant Cur
Constant CurConstant Cur
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TB62705CP/CF/CFN
Truth Table:
CLOCK LATCH ENABLE SERIAL-IN OUT0 OUT5 OUT7 SERIAL-OUT
UP H L Dn Dn Dn-5 Dn-7 Dn-7
UP L L Dn+1 No Change Dn-6
UP H L Dn+2 Dn+2 Dn-3 Dn-5 Dn-5
DOWN X L Dn+3 Dn+2 Dn-3 Dn-5 Dn-5
DOWN X H DN+3 Off Dn-5
Equivalent Circuit of Inputs and Outputs:
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Maximum Ratings:
CHARACTER SYMBOL RATING UNIT
Supply Voltage VDD 0~+7.0 V
Inpu t Vo ltag e VIN -0 .4 ~V DD + 0 .4 V
Output Current IOUT +90 mA
Output Voltage VOUT -0.5~+17.0 V
Cl ock Freq uenc y FCL K 1 5 MHz
GND Terminal Current IGND 720 mA
Power Dissipation PD
Thermal Resistance Rth (j-a)
Operating Temperature Topr -40~+85 °C
Storage Temperature Ts tg -55~+150 °C
marktech
optoelectronics
For up-to-date product info visit our web site at www.marktechopto.com All specifications subject to change.
548
1.47 (CP type : FREE AIR,Ta=25°C)
0.78 (CF/CFN type : ON PCB,Ta=25°C)
85 (CP type : FREE AIR,Ta=25°C)
160 (CF/CFN type : ON PCB,Ta=25°C)
120 Broadway • Menands, New York 12204
Toll Free: (800) 98-4LEDS
W
ºC / W
• Fax: (518) 432-7454
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