STP16CP596
Low voltage 16-Bit, constant current LED sink driver
Features
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Low voltage power supply down to 3V
16 constant current output channels
Adjustable output current through external
resistor
Serial data IN/parallel data OUT
Serial OUT changes state on the falling edges
of clock
3.3V micro driver-able
Output current: 3-50 mA
25MHz clock frequency
Available in high thermal efficiency TSSOP
exposed pad
TSSOP24
DIP-24
SO-24
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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-bit, D-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.
Part number
STP16CP596B1R
STP16CP596M
STP16CP596MTR
STP16CP596TTR
STP16CP596XTTR
May 2006
Package
DIP-24
SO-24 (Tube)
SO-24 (Tape & Reel)
TSSOP24 (Tape & Reel)
TSSOP24 Exposed-Pad (Tape & Reel)
Rev 4
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Users can adjust the STP16CP596 output current
with an external resistor, controlling the LEDs'
light intensity.
The STP16CP596 guarantees a 16V output
driving capability, allowing users to connect more
LEDs in series. The high clock frequency (25MHz)
also satisfies the high volume data transmission
system requirement. The 3.3V voltage supply is
useful for applications that interface any
microprocessor from 3.3V.
Compared with a standard TSSOP package, the
TSSOP exposed pad increases heat dissipation
capability by a factor of 2:5.
Packaging
15 parts per tube
40 parts per tube
1000 parts per reel
2500 parts per reel
2500 parts per reel
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www.st.com
26
STP16CP596
Contents
1
Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
Pin connection and description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Equivalent circuit of inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1
2.2
Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3
4
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1
4.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5
6
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Switching characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
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7
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9
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Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
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