MAX6969AWG+ Maxim Integrated Products, MAX6969AWG+ Datasheet

IC LED DRIVER LINEAR 24-SOIC

MAX6969AWG+

Manufacturer Part Number
MAX6969AWG+
Description
IC LED DRIVER LINEAR 24-SOIC
Manufacturer
Maxim Integrated Products
Type
Linear (Serial Interface)r
Datasheet

Specifications of MAX6969AWG+

Constant Current
Yes
Topology
16-Bit Shift Register, Open Drain, PWM
Number Of Outputs
16
Internal Driver
Yes
Type - Primary
General Purpose
Voltage - Supply
3 V ~ 5.5 V
Voltage - Output
5.5V
Mounting Type
Surface Mount
Package / Case
24-SOIC (7.5mm Width)
Operating Temperature
-40°C ~ 125°C
Current - Output / Channel
55mA
Internal Switch(s)
No
Low Level Output Current
37 mA
High Level Output Current
61 mA
Operating Supply Voltage
3 V to 5.5 V
Maximum Supply Current
25 mA
Maximum Power Dissipation
941 mW
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Frequency
-
Efficiency
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
The MAX6969 serial-interfaced LED driver provides 16
open-drain, constant-current-sinking LED driver outputs
rated at 5.5V. The MAX6969 operates from a 3V to 5.5V
supply. The MAX6969 supply and the LEDs’ supply or
supplies can power up in any order. The constant-cur-
rent outputs are programmed together to up to 55mA
using a single external resistor. The MAX6969 operates
with a 25Mb, industry-standard, 4-wire serial interface.
The MAX6969 uses the industry-standard, shift-register-
plus-latch-type serial interface. The driver accepts data
shifted into a 16-bit shift register using data input DIN
and clock input CLK. Input data appears at the DOUT
output 16 clock cycles later to allow cascading of multi-
ple MAX6969s. The latch-enable input, LE, loads the 16
bits of shift register data into a 16-bit output latch to set
which LEDs are on and which are off. The output-
enable, OE, gates all 16 outputs on and off, and is fast
enough to be used as a PWM input for LED intensity
control.
For applications requiring LED fault detection, refer to
the MAX6984*, which automatically detects open-circuit
LEDs.
For safety-related applications requiring a watchdog
timer, refer to the MAX6979, which includes a fail-safe
feature that blanks the display if the serial interface
becomes inactive for more than 1s.
The MAX6969 is one of a family of 12 shift-register-plus-
latch-type LED drivers. The family includes 8-port and
16-port types, with 5.5V- or 36V-rated LED outputs, with
and without open-circuit LED detection and watchdog.
All versions operate from a 3V to 5.5V supply, and are
specified over the -40°C to +125°C temperature range.
19-3677; Rev 3; 6/10
*Future product—contact factory for availability.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Variable Message Signs
Marquee Displays
Point-of-Order Signs
Traffic Signs
Gaming Features
Architectural Lighting
16-Port, 5.5V Constant-Current LED Driver
________________________________________________________________ Maxim Integrated Products
General Description
Applications
♦ 25Mb, Industry-Standard, 4-Wire Serial Interface
♦ 3V to 5.5V Logic Supply
♦ 16 Constant-Current LED Outputs Rated at 5.5V
♦ Up to 55mA Continuous Current per Output
♦ Output Current Programmed by Single Resistor
♦ 3% Current Matching Between Outputs
♦ 6% Current Matching Between ICs
♦ High-Dissipation, 24-Pin Packages
♦ -40°C to +125°C Temperature Range
+Denotes a lead(Pb)-free/RoHS-compliant package.
Typical Application Circuit and Selector Guide appear at
end of data sheet.
MAX6969AUG+
MAX6969AWG+
MAX6969ANG+
at 5V
TOP VIEW
PART
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
GND
CLK
DIN
LE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
10
11
12
TEMP RANGE
1
2
3
4
5
6
7
8
9
TSSOP/PDIP/SO
Ordering Information
MAX6969AWG
MAX6969AUG
MAX6969ANG
Pin Configuration
24
23
22
21
20
19
18
17
16
15
14
13
PIN-PACKAGE
24 TSSOP
24 Wide SO
24 PDIP
V+
SET
DOUT
OE
OUT15
OUT14
OUT13
OUT12
OUT11
OUT10
OUT9
OUT8
Features
1

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MAX6969AWG+ Summary of contents

Page 1

... Current Matching Between Outputs ♦ 6% Current Matching Between ICs ♦ High-Dissipation, 24-Pin Packages ♦ -40°C to +125°C Temperature Range PART MAX6969AUG+ MAX6969AWG+ MAX6969ANG+ +Denotes a lead(Pb)-free/RoHS-compliant package. Typical Application Circuit and Selector Guide appear at end of data sheet. TOP VIEW Applications ...

Page 2

Constant-Current LED Driver ABSOLUTE MAXIMUM RATINGS Voltage with respect to GND. V+ ............................................................................-0.3V to +6V OUT_ .......................................................................-0.3V to +6V DIN, CLK, LE, OE, SET ................................-0.3V to (V+ + 0.3V) DOUT Current ..................................................................±10mA OUT_ Sink Current .............................................................60mA Total GND ...

Page 3

Constant-Current LED Driver 5V TIMING CHARACTERISTICS (Typical Application Circuit 4.5V to 5.5V, T PARAMETER SYMBOL CLK Clock Period CLK Pulse-Width High CLK Pulse-Width Low DIN Setup Time DIN Hold Time DOUT Propagation Delay DOUT Rise and ...

Page 4

Constant-Current LED Driver 3.3V TIMING CHARACTERISTICS (Typical Application Circuit 5.5V, T PARAMETER SYMBOL CLK Clock Period CLK Pulse-Width High CLK Pulse-Width Low DIN Setup Time DIN Hold Time DOUT Propagation Delay DOUT Rise and ...

Page 5

Constant-Current LED Driver (T = +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. SUPPLY VOLTAGE (INTERFACE IDLE, ALL OUTPUTS ON 360Ω) SET +125° +85° ...

Page 6

Constant-Current LED Driver PIN NAME 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 ...

Page 7

Constant-Current LED Driver Detailed Description The MAX6969 LED driver comprises a 4-wire serial interface driving 16 constant-current-sinking, open- drain output ports. The outputs drive LEDs in either static or multiplex applications (Figure 1). The constant- current outputs are ...

Page 8

Constant-Current LED Driver LE t LRF OUT_ LE t LRR OUT_ CLK t CRF OUT_ CLK t CRR OUT_ Figure 3. LE and CLK to OUT_ Timing Table 1. 4-Wire Serial-Interface Truth Table SHIFT-REGISTER SERIAL CLOCK CONTENTS DATA ...

Page 9

Constant-Current LED Driver Applications Information Selecting External Component R LED Output Current The MAX6969 uses an external resistor, R LED current for outputs OUT0–OUT15. The minimum allowed value 327.3Ω, which sets the output SET currents ...

Page 10

Constant-Current LED Driver NO. OF PART OUTPUTS MAX6968 MAX6977 8 MAX6978 MAX6970 MAX6981 8 MAX6980 MAX6969 MAX6984 16 MAX6979 MAX6971 16 MAX6982 MAX6983 +5V MAX6969 µC V+ OUT0 SCLK CLK OUT1 OUT2 MOSI DIN OUT3 OUT4 MISO DOUT ...

Page 11

Constant-Current LED Driver Chip Information PROCESS: BiCMOS ______________________________________________________________________________________ Package Information For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...

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