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August 2004

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16 CONSTANT CURRENT OUTPUT

CHANNELS

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ADJUSTABLE OUTPUT CURRENT

THROUGH EXTERNAL RESISTOR

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SERIAL DATA IN/PARALLEL DATA OUT

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SERIAL OUT CHANGE STATE ON THE

FAILING EDGES OF CLOCK

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OUTPUT CURRENT: 15-120 mA

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25 MHz CLOCK FREQ.

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AVAILABLE IN HIGH THERMAL TSSOP

EXPOSED PAD

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EFFICIENCY PACKAGE

DESCRIPTION

The STP16C596 is a monolithic, medium-voltage,

low current power 16-bit shift register designed for

LED panel displays. The STP16C596 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 failing 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

STP16C596 output current, controlling in this way

the light intensity of LEDs.

The STP16C596 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.

Table 1: Order Codes

Part Number

Package

Comments

STP16C596B1R

DIP-24

15 parts per tube

STP16C596M

SO-24 (Tube)

40 parts per tube

STP16C596MTR

SO-24 (Tape & Reel)

1000 parts per reel

STP16C596TTR

TSSOP24 (Tape & Reel)

2500 parts per reel

STP16C596XTTR

TSSOP24 Exposed-Pad (Tape & Reel)

2500 parts per reel

STP16C596

16-BIT CONSTANT CURRENT LED SINK DRIVER

SO-24

TSSOP24

(exposed pad)

DIP-24

TSSOP24

Rev. 5