STP16C596A
16-BIT CONSTANT CURRENT LED SINK DRIVER
I
I
I
I
I
I
I
I
16 CONSTANT CURRENT OUTPUT
CHANNELS
ADJUSTABLE OUTPUT CURRENT
THROUGH EXTERNAL RESISTOR
SERIAL DATA IN/PARALLEL DATA OUT
SERIAL OUT CHANGE STATE ON THE
FALLING EDGES OF CLOCK
OUTPUT CURRENT: 15-120 mA
25 MHz CLOCK FREQ.
AVAILABLE IN HIGH THERMAL TSSOP
EXPOSED PAD
EFFICIENCY PACKAGE
DIP-24
SO-24
DESCRIPTION
The
STP16C596A
is
a
monolithic,
medium-voltage, low current power 16-bit shift
register designed for LED panel displays. The
STP16C596A contains a 16-bit serial-in,
parallel-out shift register that feeds a 16-bitD-type
storage register. In the output stage, sixteen
regulated current sources are designed to provide
15-120mA constant current to drive the LEDs.
The serial output change state on the falling edges
of clock, this special feature will provide an
improved performance of the application when the
clock signal is skewed because the daisy chain is
too long.
Table 1: Order Codes
Part Number
STP16C596AB1R
STP16C596AM
STP16C596AMTR
STP16C596ATTR
STP16C596AXTTR
Package
TSSOP24
TSSOP24
(exposed pad)
Through an external resistor, users may adjust the
STP16C596A output current, controlling in this
way the light intensity of LEDs.
The STP16C596A guarantees a 16V output
driving capability, allowing users to connect more
LEDs in series. The high clock frequency, 25 MHz,
also satisfies the system demand for high volume
data transmission. Compared with a standard
TSSOP package, the TSSOP exposed pad
increases heat dissipation capability by a 2.5
factor.
Comments
15 parts per tube
40 parts per tube
1000 parts per reel
2500 parts per reel
2500 parts per reel
DIP-24
SO-24 (Tube)
SO-24 (Tape & Reel)
TSSOP24 (Tape & Reel)
TSSOP24 Exposed-Pad (Tape & Reel)
July 2005
Rev. 2
1/18
STP16C596A
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 (Note 1)
Note 1: The exposed Pad is electrically not connected.
Table 3: Pin Description
PIN N°
1
2
3
4
5-20
21
22
23
24
Symbol
GND
SDI
CLK
/LE
OUT 0-15
/OE
SDO
R-EXT
V
DD
Name and Function
Ground Terminal
Serial data input terminal
Clock input terminal
Latch input terminal
Output terminal
Input terminal of output enable (active low)
Serial data out terminal
Input terminal of an external resistor for constant current programing
Supply voltage terminal
2/18
STP16C596A
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
1920
25
-40 to +125
-65 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. Under these conditions, functional operation
is not implied.
Table 5: Thermal Data
Symbol
Parameter
DIP-24
60
SO-24
75
TSSOP24
85
TSSOP24 (*)
(exposed pad)
37.5
Unit
°C/W
R
thj-amb
Thermal Resistance Junction-ambient
(*) The exposed pad should be soldered directly to the PCB to realize the thermal benefits.
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
= 4.5 to 5.5V
OUTn
SERIAL-OUT
SERIAL-OUT
0.7V
DD
-0.3
20
20
400
20
15
15
25
5
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
3/18
STP16C596A
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 15 = OFF
OUT 0 to 15 = OFF
OUT 0 to 15 = OFF
OUT 0 to 15 = ON
OUT 0 to 15 = ON
Parameter
Input Voltage High Level
Input Voltage Low Level
Output Leakage Current
V
OH
= 16 V
V
DD
-0.4V
18.6
45.7
20.4
50.2
±3
±3
150
100
300
200
0.3
5.5
10.1
5.5
10.1
22.4
55.2
±4
±4
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)
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
Min.
Typ.
200
160
145
15
15
15
45
15
160
15
Max.
280
250
200
30
30
30
60
300
200
25
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
4/18
STP16C596A
EQUIVALENT CIRCUIT OF INPUTS AND OUTPUTS
Figure 2: /OE Terminal
Figure 3: /LE Terminal
Figure 4: CLK, SDI Terminal
5/18
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