July 2006 Rev 10 1/24
24
STP16CL596
Low voltage 16-Bit, constant current LED sink driver
Features
■ 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: 15-90mA
■ 25Mhz clock freqrequency
■ available in high thermal efficiency TSSOP
exposed pad
Description
The STP16CL596 is a monolithic, medium-
voltage, low current power 16-bit shift register
designed for LED panel displays.
The device 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 are designed to provide
15-90mA 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.
Through an external resistor, users may adjust the
STP16CL596 output current, controlling in this
way the light intensity of LEDs.
The STP16CL596 guarantees a 16V output
driving capability, allowing users to connect more
LEDs in series. The high clock frequency, 25MHz,
also satisfies the system demand for high volume
data transmission, the 3.3V of voltage supply is
well useful for applications that interface any micro
from 3.3V.
Compared with a standard TSSOP package, the
TSSOP exposed pad increases heat dissipation
capability by a 2.5 factor.
DIP-24 SO-24
TSSOP24
TSSOP24
(exposed pad)
www.st.com
Order Codes
Part Number Package Packaging
STP16CL596B1R DIP-24 15 parts per tube
STP16CL596M SO-24 (Tube) 40 parts per tube
STP16CL596MTR SO-24 (Tape & Reel) 1000 parts per reel
STP16CL596TTR TSSOP24 (Tape & Reel) 2500 parts per reel
STP16CL596XTTR TSSOP24 Exposed-Pad (Tape & Reel) 2500 parts per reel
Obsolete Product(s) - Obsolete Product(s)