STP08C596A
8-BIT CONSTANT CURRENT LED SINK DRIVER
I
I
I
I
I
I
I
I
8 CONSTANT CURRENT OUTPUT
CHANNELS
ADJUSTABLE OUTPUT CURRENT
THROUGH EXTERNAL RESISTOR
SERIAL DATA IN/PARALLEL DATA OUT
SERIAL OUT CHANGE STATE ON THE
FAILING EDGES OF CLOCK
OUTPUT CURRENT: 15-120 mA
25 MHz CLOCK FREQ.
AVAILABLE IN HIGH THERMAL TSSOP
EXPOSED PAD
EFFICIENCY PACKAGE
DIP-16
SO-16
DESCRIPTION
The
STP08C596A
is
a
monolithic,
medium-voltage, low current power 8-bit shift
register designed for LED panel display. The
STP08C596A
contains a 8-bit serial-in,
parallel-out shift register that feeds a 8-bitD-type
storage register. In the output stage, sixteen
regulated current sources were designed to
provide 15-120mA constant current to drive the
LEDs.
Compared with the STPIC6C595, the device
provides
great
flexibility
and
improved
performance in LED panel system design.
Table 1: Order Codes
Part Number
STP08C596AB1
STP08C596AM
STP08C596AMTR
STP08C596ATTR
Temp. Range
-40°C to
-40°C to
-40°C to
-40°C to
125°C
125°C
125°C
125°C
TSSOP16
Trough an external resistor, users may adjust the
STP08C596A output current, controlling in this
way the light intensity of LEDs.
The STP08C596A guarantees 16V output driving
capability, allowing users to connect more LEDs in
series. The high clock frequency, 25 MHz, also
satisfies the system requirement of high volume
data transmission.
Package
DIP-16
SO-16 (Tube)
SO-16 (Tape & Reel)
TSSOP16 (Tape & Reel)
Comments
25 part per tube
50 parts per tube
1000 parts per reel
2500 parts per reel
May 2005
Rev. 1
1/16
STP08C596A
Table 2: Current Accuracy
Current accuracy
Output Voltage
Between bits
≥
0.7V
TYP. ± 3%
Between ICs
± 6%
15 to 120 mA
Output Current
Figure 1: Pin Connection
Table 3: Pin Description
PIN N°
1
2
3
4
5-12
13
14
15
16
Symbol
GND
SDI
CLK
/LE
OUT 0-7
/OE
SDO
R-EXT
V
DD
Name and Function
Ground Terminal
Serial data input terminal
Clock input terminal
Latch input terminal
Output terminal
Output enable input terminal (active low)
Serial data out terminal
Constant Current programming
5V Supply voltage terminal
Table 4: Absolute Maximum Ratings
Symbol
V
DD
V
O
I
O
V
I
I
GND
f
CLK
T
OPR
T
STG
Supply Voltage
Output Voltage
Output Current
Input Voltage
GND Terminal Current
Clock Frequency
Operating Temperature Range
Storage Temperature Range
Parameter
Value
0 to 7
-0.5 to 16
120
-0.4 to V
DD
+0.4
980
25
-40 to +125
-55 to +150
Unit
V
V
mA
V
mA
MHz
°C
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
2/16
STP08C596A
Table 5: Thermal Data
Symbol
R
thj-amb
Parameter
Thermal Resistance Junction-ambient
DIP-16
90
SO-16
125
TSSOP16
140
Unit
°C/W
Table 6: Recommended Operating Conditions
Symbol
V
DD
V
O
I
O
I
OH
I
OL
V
IH
V
IL
t
wLAT
t
wCLK
t
wEN
t
HOLD(D)
f
CLK
Parameter
Supply Voltage
Output Voltage
Output Current
Output Current
Output Current
Input Voltage
Input Voltage
/LE Pulse Width
CLK Pulse Width
/OE Pulse Width
Hold Time for DATA
Clock Frequency
Cascade Operation
V
DD
= 3.0 to 3.6V
OUTn
SERIAL-OUT
SERIAL-OUT
0.7V
DD
-0.3
20
20
400
20
15
15
25
15
Test Conditions
Min.
4.5
Typ.
5.0
Max.
5.5
16.0
120
+1
-1
V
DD
+0.3
0.3V
DD
Unit
V
V
mA
mA
mA
V
V
ns
ns
ns
ns
ns
ns
MHz
t
SETUP(D)
Setup Time for DATA
t
SETUP(L)
Setup Time for LATCH
Table 7: Electrical Characteristics
(V
DD
=5V, T = 25°C, unless otherwise specified.)
Symbol
V
IH
V
IL
I
OH
V
OL
V
OH
I
OL1
I
OL2
∆I
OL1
∆I
OL2
R
SIN(up)
Output Current Error
between bit (All Output ON)
Pull-up Resistor
R
EXT
= OPEN
R
EXT
= 470
Ω
R
EXT
= 250
Ω
Supply Current (ON)
R
EXT
= 470
Ω
R
EXT
= 250
Ω
OUT 0 to 7 = OFF
OUT 0 to 7 = OFF
OUT 0 to 7 = OFF
OUT 0 to 7 = ON
OUT 0 to 7 = ON
Parameter
Input Voltage High Level
Input Voltage Low Level
Output Leakage Current
V
OH
= 16 V
V
DD
-0.4V
20.6
50.6
20.7
51.0
20.9
51.5
±3
±3
150
100
300
200
0.3
5.5
10.1
5.5
10.1
600
400
0.6
7.7
14.1
7.7
14.1
Output Voltage (Serial-OUT) I
OL
= 1mA
Output Voltage (Serial-OUT) I
OH
= -1mA
Output Current
V
O
= 0.7V R
EXT
= 910
Ω
V
O
= 0.7V R
EXT
= 360
Ω
V
O
= 0.7V R
EXT
= 910
Ω
V
O
= 0.7V R
EXT
= 360
Ω
Test Conditions
Min.
0.7V
DD
GND
Typ.
Max.
V
DD
0.3V
DD
10
0.4
Unit
V
V
µA
V
V
mA
mA
%
%
KΩ
KΩ
mA
R
SIN(down)
Pull-down Resistor
I
DD(OFF1)
Supply Current (OFF)
I
DD(OFF2)
I
DD(OFF3)
I
DD(ON1)
I
DD(ON2)
3/16
STP08C596A
Table 8: Switching Characteristics
(V
DD
=5V, T = 25°C, unless otherwise specified.)
Symbol
t
PLH1
t
PLH2
t
PLH3
t
PLH
t
PHL1
t
PHL2
t
PHL3
t
PHL
t
r
t
f
Parameter
Propagation Delay Time,
CLK-OUTn, /LE = H, /OE = L
Propagation Delay Time,
/LE-OUTn, /OE = L
Propagation Delay Time,
/OE-OUTn, /LE = H
Propagation Delay Time,
CLK-SDO
Propagation Delay Time,
CLK-OUTn, /LE = H, /OE = L
Propagation Delay Time,
/LE-OUTn, /OE = L
Propagation Delay Time,
/OE-OUTn, /LE = H
Propagation Delay Time,
CLK-SDO
Output Rise Time
Output Fall Time
Test Conditions
V
DD
= 5 V
V
IL
= GND
I
O
= 40mA
R
EXT
= 470
Ω
V
IH
= V
DD
C
L
= 13pF
V
L
= 3 V
R
L
= 65
Ω
145
15
15
15
45
15
160
15
200
30
30
30
60
300
200
25
ns
ns
ns
ns
ns
ns
ns
ns
Min.
Typ.
200
160
Max.
280
250
Unit
ns
ns
EQUIVALENT CIRCUIT OF INPUTS AND OUTPUTS
Figure 2: /OE Terminal
4/16
Microcontroller MCU
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