MAX6983 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX6983

16-Port, 36V Constant-Current LED Driver with LED Fault Detection and Watchdog

Maxim Integrated 

16-Port, 36V Constant-Current LED Driver with

LED Fault Detection and Watchdog

Pin Description

PIN

NAME

FUNCTION

1

GND

Ground

2

DIN

Serial-Data Input. Data is loaded into the internal 16-bit shift register on CLK’s rising edge.

3

CLK

Serial-Clock Input. Data is loaded into the internal 16-bit shift register on CLK’s rising edge.

Load-Enable Input. Data is loaded transparently from the internal shift register(s) to the output latch(es)

4

LE

while LE is high. Data is latched into the output latch(es) on LE's falling edge, and retained while LE is

low.

5–20 OUT0–OUT15 LED Driver Outputs. OUT0 to OUT15 are open-drain, constant-current sinking outputs rated to 28V.

21

OE

Output Enable Input. High forces outputs OUT0 to OUT15 high impedance, without altering the contents

of the output latches. Low enables outputs OUT0 to OUT15 to follow the state of the output latches.

22

DOUT Serial-Data Output. Data is clocked out of the 16-bit internal shift-register to DOUT on CLK’s rising edge.

23

SET

LED Current Setting. Connect SET to GND through a resistor (RSET) to set the maximum LED current.

24

V+

Positive Supply Voltage. Bypass V+ to GND with a 0.1µF ceramic capacitor.

CLK

DIN

LE

OE

Figure 1. Block Diagram

D0 SERIAL-TO-PARALLEL SHIFT REGISTER D15

MAX6983

D0

LATCHES

D0

CONSTANT-CURRENT SINKS

FAULT DETECTION

D15

D15

POWER-ON

RESET

WATCH-

DOG

V+

CURRENT

REFERENCE

OUT0

OUT2

OUT1

OUT13

OUT15

OUT14

GND

DOUT

V+

RSET

GND

6 _______________________________________________________________________________________

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