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Toshiba |
TB62705CP/CF/CFN
TOSHIBA Bi−CMOS INTEGRATED CIRCUIT SILICON MONOLITHIC
TB62705CP,TB62705CF,TB62705CFN
8-BIT SHIFT REGISTER, LATCHES & CONSTANT-CURRENT DRIVERS
The TB62705CP / CF / CFN are specifically designed for LED and
LED DISPLAY constant-current drivers.
These constant-current output circuits can support the set-up of
an external resistor (IOUT = 5~90mA).
This IC is a monolithic integrated circuit designed to be used
together with Bi-CMOS process.
The devices consist of an 8-bit shift register, latch, AND-GATE
and constant-current drivers.
FEATURES
z Constant-current Output : current with one resistor for
5 to 90mA.
z Maximum Clock Frequency : fCLK = 15 (MHz)
(Cascade Connecte Operate,
Topr = 25°C)
z 5V C−MOS Compatible Input
z Package
: DIP16−P−300−2.54A (TB62705CP)
SSOP16−P−225−1.00A (TB62705CF)
SSOP16−P−225−0.65B (TB62705CFN)
z Constant Output Current Matching:
OUTPUT-GND
VOLTAGE
≥ 0.4 V
≥ 0.7 V
CURRENT
MATCHING
±6.0%
±6.0%
OUTPUT
CURRENT
5~40 mA
5~90 mA
TB62705CP
TB62705CF
TB62705CFN
PIN CONNECTION (Top view)
GND
SERIAL-IN
CLOCK
LATCH
OUTn
OUTn
OUTn
OUTn
1
2
3
4
5
6
7
8
16 VDD
15 R-EXT
14 SERIAL-OUT
13 ENABLE
12 OUTn
11 OUTn
10 OUTn
9 OUTn
Weight
DIP16-P-300-2.54A: 1.11 g (typ.)
SSOP16-P-225-1.00A: 0.14 g (typ.)
SSOP16-P-225-0.65B: 0.07 g (typ.)
1 2006-06-13
BLOCK DIAGRAM
OUTn
OUTn
TB62705CP/CF/CFN
OUTn
TIMING DIAGRAM
CLOCK
SERIAL-IN
LATCH
ENABLE
OUT0
OUT1
OUT3
OUT7
SERIAL-OUT
5V
0V
5V
0V
5V
0V
5V
0V
Off
On
Off
On
Off
On
Off
5V
0V
Note:
Latches are level-sensitive, not rising edge-sensitive, and are not synchronized with the CLOCK signal. The
data will pass through the latch circuit if the latch input is set at “H” level, and will be retained if the input is
set at “L”.
2 2006-06-13
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