PA5026

16-Bit

Constant Current LED Sink Driver

ANALOG PRODUCTS DIVISION

561 E Elliot Road.#175 Chandler, AZ 85225 Tel: (480)539-2900. Fax: (480)632-1715.

1

www.protekanalog.com

Not for use in any life support systems.

95180. Rev.2. 09/09

FEATURES



16-channel constant–current output.



Output constant current: 2 - 80mA



Current accuracy (All output ON)



Between BITS ±1%



Between IC’s ±1%



Output Current 2~80mA adjustable



Output current adjustable through an external

resistor.



Interleave time delay of output channel



Fast response for output port (tr/td=50ns)



25MHz clock frequency

DESCRIPTION

PA5026 contains a serial buffer and data latches

which convert serial input data into parallel output

format. At PA5026 output stage, sixteen regulated

current ports are designed to provide uniform and

constant current sinks for driving LED’s within a large

range of Vf variations.

PA5026 provides users with great flexibility and device

performance in their system design for LED display

applications, e.g. LED panels.

Users may adjust the output current from 2 mA to 80 mA

through an external resistor, Rext, which gives them the

flexibility in controlling the light intensity of LED’s.

PA5026 guarantees a maximum of 17V at the output port.

The high clock frequency, 25 MHz, satisfies the system

requirements of high volume data transmission.

ORDERING INFORMATION

Device No.

Package

PA5026P

SSOP-24-300-1.0

PA5026S

SSOP-24-150-0.635

PA5026R

PA5026QN

QFN-24

BLOCK DIAGRAM

5

6

20

22

23

21

4

2

3

REXT

OE

LE

SDI

CLOCK

SERIAL -OUT

1- Reg

Q

ST

D

Q

ST

D

Q

ST

D

D

Q

CK

D

Q

CK

D

Q

CK

OUT 0

OUT 1

OUT 15