ST STP16CP596 User Manual
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STP16CP596
LOW VOLTAGE 16-BIT CONSTANT
CURRENT LED SINK DRIVER
■ LOW VOLTAGE POWER SUPPLY DOWN T O
3V
■ 16 CONSTANT CURRENT OUTPUT
CHANNELS
■ ADJUST ABLE OUTPUT CURRENT
THROUGH EXTERNAL RESISTOR
■ SERIAL DATA IN/PARALLEL DATA OUT
■ SERIAL OUT CHANGES STATE ON THE
FALLING E DGES OF CLOCK
■ 3.3V MICRO DRIVER-ABLE
■ OUTPUT CURRENT : 3-50 mA
■ 25 MHz CLOCK FREQ.
■ A V AILABL E IN HIGH T HERMAL EFFI CIENCY
TSSOP EXPOSED PAD
DESCRIPTION
The STP16CP596 is a monolithic, low voltage, low
current power 16-bit shift register designed for
LED panel displays. The STP16CP596 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 were
designed to provide 3-50mA constant current to
drive the LEDs.
Compared with the STPIC6C595, the device
provides great flexibility and improved
performance in LED panel system design.
DIP-24
TSSOP24
SO-24
TSSOP24
(exposed pad)
Trough an external resistor, users can adjust the
STP16CP596 output current, controlling in this
way the light intensity of LEDs.
The STP16CP596 guarantees a 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. The 3.3V of voltage
supply is well useful for applications that in terface
any micro from 3.3V. Compared w ith a standard
TSSOP package, the TSSOP exposed pad
increases heat dissipation capability by a 2.5
factor.
Table 1: Order Codes
Type Package Comments
STP16CP596B1R DIP-24 15 parts per tube
STP16CP596M SO-24 (Tube) 40 parts per tube
STP16CP596MTR SO-24 (Tape & Reel) 1000 parts per reel
STP16CP596TTR TSSOP24 (Tape & Reel) 2500 parts per reel
STP16CP596XTTR TSSOP24 Exposed-Pad (Tape & Reel) 2500 parts per reel
Rev. 3
1/18July 2005
STP16CP596
Table 2: Typical Current Accuracy
Output Voltage Output Current Between Bits Between ICs
≥ 0.1V
≥ 0.15V
≥ 0.25V
≥ 0.5V
≥ 1.2V
≥ 1.4V
3 mA/V
5 mA/V
10 mA/V
20 mA/V
40 mA/V
50 mA/V
Figure 1: Pin Connection (Note 1)
CC
CC
CC
CC
CC
CC
= 5V
= 5V
= 5V
= 5V
= 5V
= 5V
± 3% ± 6%
± 2% ± 6%
± 2% ± 6%
± 1% ± 6%
± 1% ± 6%
± 1% ± 6%
Note 1: The exposed Pad is electrically no t c onnected.
Table 3: Pin Description
PIN N° Symbol Name and Function
1 GND Ground Terminal
2 SDI Serial data input terminal
3 CLK Clock input terminal
4 /LE Latch input terminal
5-20 OUT 0-15 Output terminal
21 /OE
22 SDO Serial data out terminal
23 R-EXT Input terminal of an external resistor for constant current programing
24 V
DD
2/18
Input terminal of output enable (active low)
Supply voltage terminal
STP16CP596
Table 4: Absolute Maximum Ratings
Symbol Parameter Value Unit
V
V
I
V
I
GND
f
CLK
T
OPR
T
STG
Absolute Maximum Ra tings are those v al ues beyond which damage to the device may occur. Under the se conditions, functional operation
is not implied.
Table 5: Thermal Data
Supply Voltage
DD
Output Voltage
O
Output Current
O
Input Voltage -0.4 to VDD+0.4
I
GND Terminal Current
Clock Frequency
Operating Temperature Range
Storage Temperature Range
0 to 7 V
-0.5 to 16 V
50 mA
V
800 mA
25 MHz
-40 to +125 °C
-65 to +150 °C
Symbol Parameter DIP-24 SO-24 TSSOP24
R
thj-amb
(*) The exposed pad shou l d be soldered directly to the PCB to realize the th ermal benefits.
Thermal Resistance Junction-ambient
60 75 85 37.5 °C/W
TSSOP24 (*)
(exposed pad)
Table 6: Recommended Operating Conditions
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
V
I
I
V
V
t
wLAT
t
wCLK
t
wEN
t
SETUP(D)
t
HOLD(D)
t
REM(L)
f
CLK
Supply Voltage 3.0 5.5 V
DD
Output Voltage 16.0 V
O
Output Current OUTn 3 50 mA
I
O
Output Current SERIAL-OUT +1 mA
OH
Output Current SERIAL-OUT -1 mA
OL
Input Voltage 0.7V
IH
Input Voltage -0.3 0.3V
IL
DD
/LE Pulse Width VDD = 3.0 to 3.6V 20 ns
CLK Pulse Width 20 ns
/OE Pulse Width 400 ns
Setup Time for DATA 20 ns
Hold Time for DATA 15 ns
Removal Time for LATCH 15 ns
Clock Frequency Cascade Operation 25 MHz
VDD+0.3 V
DD
Unit
V
3/18
STP16CP596
Table 7: Electrical Characteristics (VDD=3.3V to 5V, T = 25°C, unless otherwise specified.)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
V
I
V
V
I
OL1A
I
OL2A
∆I
OL1A
∆I
OL2A
I
OL1B
I
OL2B
∆I
OL1B
∆I
OL2B
R
SIN(up)
R
SIN(down)
I
DD(OFF1)
I
DD(OFF2)
I
DD(OFF3)
I
DD(ON1)
I
DD(ON2)
Input Voltage High Level 0.7V
IH
Input Voltage Low Level GND 0.3V
IL
Output Leakage Current VOH = 16 V 10 µA
OH
Output Voltage (Serial-OUT) IOL = 1mA 0.4 V
OL
Output Voltage (Serial-OUT) IOH = -1mA VDD-0.4V V
OH
Output Current VO = ≥0.2V, R
VO = ≥0.5V, R
Output Current Error
between bit (All Output ON)
VO = ≥0.2V, R
VO = ≥0.5V, R
Output Current VO = ≥0.2V, R
VO = ≥0.5V, R
Output Current Error
between bit (All Output ON)
VO = ≥0.2V, R
VO = ≥0.5V, R
=6.2KΩ, VDD=3.3V 2.85 3 3.15 mA
EXT
=1KΩ, VDD = 3.3V 19.6 20 20.4 mA
EXT
=6.2KΩ, VDD=3.3V ± 4 ± 6 %
EXT
=1KΩ, VDD = 3.3V ± 2 ± 3 %
EXT
=6.2KΩ, VDD=5V 2.9 3 3.1 mA
EXT
=1KΩ, VDD = 5V 19.6 20 20.4 mA
EXT
=6.2KΩ, VDD=5V ± 2 ± 3.5 %
EXT
=1KΩ, VDD = 5V ± 1 ± 2 %
EXT
DD
Pull-up Resistor 150 300 600 KΩ
Pull-down Resistor 100 200 400 KΩ
Supply Current (OFF) R
Supply Current (ON) R
= OPEN OUT 0 to 15 = OFF 0.3 mA
EXT
R
= 6.2KΩ OUT 0 to 15 = OFF 1
EXT
R
= 1KΩ OUT 0 to 15 = OFF 3
EXT
= 6.2KΩ OUT 0 to 15 = ON 1
EXT
R
= 1KΩ OUT 0 to 15 = ON 3
EXT
V
DD
DD
V
V
Table 8: Switching Characteristics (V
=3V, T = 25°C, unless otherwise specified.)
DD
Symbol Parameter Test Conditions Min. Typ. Max. Unit
t
PLH1
t
PLH2
t
PLH3
t
PLH
t
PHL1
t
PHL2
t
PHL3
t
PHL
t
ON
t
OFF
Propagation Delay Time,
CLK-OUTn
, /LE = H, /OE = L
Propagation Delay Time,
-OUTn, /OE = L
/LE
Propagation Delay Time,
-OUTn, /LE = H
/OE
V
= 3 V VIH = V
DD
DD
VIL = GND CL = 13pF
= 40mA VL = 3 V
I
O
R
= 470 Ω RL = 65 Ω
EXT
Propagation Delay Time,
CLK-SDO
Propagation Delay Time,
CLK-OUTn, /LE = H, /OE = L
Propagation Delay Time,
-OUTn, /OE = L
/LE
Propagation Delay Time,
-OUTn, /LE = H
/OE
Propagation Delay Time,
CLK-SDO
Output Rise Time 10 ~ 90% of voltage waveform 260 400 ns
Output Fall Time 90 ~ 10% of voltage waveform 50 80 ns
250 280 ns
220 250 ns
200 250 ns
25 50 ns
25 50 ns
25 50 ns
50 70 ns
25 50 ns
4/18
EQUIVALENT CIRCUIT OF INPUTS AND OUTPUTS
STP16CP596
Figure 2: /OE
Figure 3: /LE Terminal
Terminal
Figure 4: CLK, SDI Terminal
5/18
STP16CP596
Figure 5: SDO Terminal
Figure 6: Block Diagram
6/18
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