MAX6972ATJ+ datasheet, PDF - EEWORLD Datasheet

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MAX6972ATJ+: Description16-Output PWM LED Drivers for Message Boards; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size718KB，23 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html; Environmental Compliance

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MAX6972ATJ+ Overview

16-Output PWM LED Drivers for Message Boards

MAX6972ATJ+ Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Maxim
Parts packaging code	QFN
package instruction	HVQCCN, LCC32,.2SQ,20
Contacts	32
Reach Compliance Code	compli
ECCN code	EAR99
Factory Lead Time	1 week
data entry mode	SERIAL
Interface integrated circuit type	LED DISPLAY DRIVER
JESD-30 code	S-XQCC-N32
JESD-609 code	e3
length	5 mm
Humidity sensitivity level	1
Multiplex display function	NO
Number of functions	1
Number of segments	16
Number of terminals	32
Maximum operating temperature	125 °C
Minimum operating temperature	-40 °C
Package body material	UNSPECIFIED
encapsulated code	HVQCCN
Encapsulate equivalent code	LCC32,.2SQ,20
Package shape	SQUARE
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	260
power supply	3.3 V
Certification status	Not Qualified
Maximum seat height	0.8 mm
Maximum supply voltage	3.6 V
Minimum supply voltage	3 V
Nominal supply voltage	3.3 V
surface mount	YES
technology	BICMOS
Temperature level	AUTOMOTIVE
Terminal surface	Matte Tin (Sn)
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	NOT SPECIFIED
width	5 mm
minfmax	33 MHz

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19-0534; Rev 0; 5/06

KIT

ATION

EVALU

AVAILA

16-Output PWM LED Drivers

for Message Boards

Features

♦

16 LED Current Sink Outputs (Two Banks of Eight

Outputs)

♦

32 LED Drive Option When Multiplexing

♦

33MHz Clock Supports Up to 63 Frames per

Second of Video

♦

Constant Output Current Calibration from 11mA

to 55mA in 256 Steps

♦

EZCascade™ Interface Simplifies Multiple Driver

Cascading Without External Buffers

♦

12-Bit or 14-Bit Individual PWM LED Intensity

Controls

♦

7-Bit or 5-Bit Panel PWM-Intensity Control

♦

+3V to +7V LED Power Supply

♦

+3.0V to +3.6V Logic Supply

♦

Open-Circuit LED Fault Detection

♦

Optional Watchdog Timer Blanks Display if

Interface Fails

♦

Standard -40°C to +125°C Operating Temperature

Range

General Description

The MAX6972/MAX6973 precision current-sinking,

16-output PWM LED drivers drive red, green, and/or blue

LEDs for full-color graphic message boards and video

displays. Each output has an individual 12-bit (MAX6972)

or 14-bit (MAX6973) PWM-intensity (hue) control and

7-bit (MAX6972) or 5-bit (MAX6973) global PWM intensity

(luminance) control. The MAX6972/MAX6973 also fea-

ture open-circuit LED fault-detection circuitry, as well as

a watchdog timer.

The driver has two banks of eight outputs, with each bank

intended to drive a different color in RGB applications.

The standard application uses three MAX6972/

MAX6973s to drive eight RGB LEDs. The full-scale current

for each bank of eight outputs is adjustable from 11mA

to 55mA in 256 steps (0.3125% per step) to calibrate

each color.

The MAX6972/MAX6973 can optionally multiplex by

using outputs

MUX0

and

MUX1,

which each drive an

external pnp transistor. Multiplexing doubles the

MAX6972/MAX6973 drive capability to 32 LEDs.

The MAX6972/MAX6973 operate from a 3.0V to 3.6V

power supply. The LED power supply can range from

3V to 7V. The LED drivers require only 0.8V headroom

above the LEDs’ forward-voltage drop. Using a sepa-

rate LED supply voltage for each LED minimizes power

consumption.

The serial interface uses differential signaling for the

high-speed clock and data signals to reduce EMI and

improve signal integrity. The MAX6972/MAX6973 buffer

all interface signals to simplify cascading devices in

modules that use a large number of drivers.

An internal watchdog timer, when enabled, automatically

clears the pixel-data registers and blanks the display if

any of the signal inputs fail to toggle within 40ms.

The MAX6972/MAX6973 are available in 32-pin TQFN

packages and operate over the -40°C to +125°C

temperature range.

Refer to the MAX6974/MAX6975 data sheet for a

24-output, 6mA to 30mA software-compatible device.

EZCascade is a trademark of Maxim Integrated Products, Inc.

MAX6972/MAX6973

Ordering Information

PART

MAX6972ATJ+

MAX6973ATJ+

TEMP RANGE

-40°C to +125°C

PIN-

PACKAGE

32 TQFN-EP*

PKG

CODE

T3255-5

*EP

= Exposed paddle.

+Denotes

lead-free package.

Pin Configuration

DOUT+

CLKO+

EP*

MUX0

CLKI+

CLKI-

DIN+

DIN-

LOADI

I.C.

TOP VIEW

Z7 25

Z6 26

Z5 27

Z4 28

Z3 29

Z2 30

Z1 31

Z0 32

MAX6972ATJ

MAX6973ATJ

Applications

LED Video Display Panels

LED Message Boards

Variable Message Signs (VMS)

Signs

Graphic Panels

Typical Operating Circuit appears at the end of data sheet.

*EP = EXPOSED PADDLE.

TQFN

5mm x 5mm

________________________________________________________________

Maxim Integrated Products

LOAD0

DOUT-

CLKO-

MUX1

AGND

For pricing delivery, and ordering information please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

MAX6972ATJ+ Related Products

	MAX6972ATJ+	MAX6972	MAX6973
Description	16-Output PWM LED Drivers for Message Boards	16-Output PWM LED Drivers for Message Boards	16-Output PWM LED Drivers for Message Boards

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