General Description
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.
Features
♦25Mb, Industry-Standard, 4-Wire Serial Interface
at 5V
♦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
MAX6969
16-Port, 5.5V Constant-Current LED Driver
________________________________________________________________ Maxim Integrated Products 1
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
V+
SET
DOUT
OELE
CLK
DIN
GND
TOP VIEW
OUT15
OUT14
OUT13
OUT12OUT3
OUT2
OUT1
OUT0
16
15
14
13
9
10
11
12
OUT11
OUT10
OUT9
OUT8OUT7
OUT6
OUT5
OUT4
TSSOP/PDIP/SO
MAX6969AUG
MAX6969ANG
MAX6969AWG
Pin Configuration
Ordering Information
19-3677; Rev 3; 6/10
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.
Typical Application Circuit and Selector Guide appear at
end of data sheet.
EVALUATION KIT
AVAILABLE
Applications
Variable Message Signs
Marquee Displays
Point-of-Order Signs
Traffic Signs
Gaming Features
Architectural Lighting
PART TEMP RANGE PIN-PACKAGE
MAX6969AUG+ -40°C to +125°C 24 TSSOP
MAX6969AWG+ -40°C to +125°C 24 Wide SO
MAX6969ANG+ -40°C to +125°C 24 PDIP
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Future product—contact factory for availability.
MAX6969
16-Port, 5.5V Constant-Current LED Driver
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
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 Current ...........................................................480mA
Continuous Power Dissipation (TA= +70°C)
24-Pin TSSOP (derate 12.2mW/°C over +70°C) ..........975mW
24-Pin PDIP (derate 13.3mW/°C over +70°C)............1067mW
24 Wide SO (derate 11.8mW/°C over +70°C)..............941mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
ELECTRICAL CHARACTERISTICS
(Typical Application Circuit, V+ = 3V to 5.5V, TA= TMIN to TMAX, unless otherwise noted. Typical values are at V+ = 5V, TA= +25°C.)
(Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Supply Voltage V+ 3.0 5.5 V
Output Voltage VOUT 5.5 V
Standby Current
(Interface Idle, All Output Ports
High Impedance, RSET = 360Ω)
I+All logic inputs at V+ or GND, DOUT
unloaded 5.7 8 mA
Standby Current
(Interface Running, All Output
Ports High Impedance,
RSET = 360Ω)
I+fCLK = 5MHz, OE = V+, DIN and LE = V+
or GND, DOUT unloaded 6 8.5 mA
Supply Current
(Interface Idle, All Output Ports
Active Low, RSET = 360Ω)
I+All logic inputs at V+ or GND,
DOUT unloaded 18 25 mA
Input High Voltage
DIN, CLK, LE, OE VIH 0.7 x
V+ V
Input Low Voltage
DIN, CLK, LE, OE VIL 0.3 x
V+ V
Hysteresis Voltage
DIN, CLK, LE, OE ∆VI0.8 V
Input Leakage Current
DIN, CLK, LE, OE IIH, IIL -1 +1 µA
Output High-Voltage DOUT VOH ISOURCE = 4mA V +
- 0.5V V
Output Low Voltage VOL ISINK = 4mA 0.5 V
Output Current OUT_ IOUT V+ = 3V to 5.5V, VOUT = 0.5V to 2.5V,
RSET = 360Ω37 50 61 mA
Output Leakage Current OUT_ ILEAK OE = V+, OUT_ = V+ 1 µA
MAX6969
16-Port, 5.5V Constant-Current LED Driver
_______________________________________________________________________________________ 3
5V TIMING CHARACTERISTICS
(Typical Application Circuit, V+ = 4.5V to 5.5V, TA= TMIN to TMAX, unless otherwise noted.) (Notes 1, 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
CLK Clock Period tCP 40 ns
CLK Pulse-Width High tCH 19 ns
CLK Pulse-Width Low tCL 19 ns
DIN Setup Time tDS 4ns
DIN Hold Time tDH 8ns
DOUT Propagation Delay tDO 12 32 ns
DOUT Rise and Fall Time tDR
,
tDF CDOUT = 10pF, 20% to 80% 10 ns
LE Pulse-Width High tLW 20 ns
LE Setup Time tLS 10 ns
LE Rising to OUT_ Rising Delay tLRR 100 ns
LE Rising to OUT_ Falling Delay tLRF 300 ns
CLK Rising to OUT_ Rising Delay tCRR 100 ns
CLK Rising to OUT_ Falling Delay tCRF 310 ns
OE Rising to OUT_ Rising Delay tOEH100 ns
OE Falling to OUT_ Falling Delay tOEL320 ns
LED Output OUT_ Turn-On Fall
Time tf80% to 20%, pullup resistor = 65Ω120 ns
LED Output OUT_ Turn-Off Rise
Time tr20% to 80%, pullup resistor = 65Ω120 ns
MAX6969
16-Port, 5.5V Constant-Current LED Driver
4 _______________________________________________________________________________________
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
3.3V TIMING CHARACTERISTICS
(Typical Application Circuit, V+ = 3V to 5.5V, TA= TMIN to TMAX, unless otherwise noted.) (Notes 1, 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
CLK Clock Period tCP 52 ns
CLK Pulse-Width High tCH 24 ns
CLK Pulse-Width Low tCL 24 ns
DIN Setup Time tDS 4ns
DIN Hold Time tDH 8ns
DOUT Propagation Delay tDO 12 50 ns
DOUT Rise and Fall Time tDR
,
tDF CDOUT = 10pF, 20% to 80% 12 ns
LE Pulse-Width High tLW 20 ns
LE Setup Time tLS 15 ns
LE Rising to OUT_ Rising Delay tLRR 120 ns
LE Rising to OUT_ Falling Delay tLRF 310 ns
CLK Rising to OUT_ Rising Delay tCRR 120 ns
CLK Rising to OUT_ Falling Delay tCRF 330 ns
OE Rising to OUT_ Rising Delay tOEH120 ns
OE Falling to OUT_ Falling Delay tOEL330 ns
LED Output OUT_ Turn-On Fall
Time tf80% to 20%, pullup resistor = 65Ω120 ns
LED Output OUT_ Turn-Off Rise
Time tr20% to 80%, pullup resistor = 65Ω120 ns
Note 1: All parameters tested at TA= +25°C. Specifications over temperature are guaranteed by design.
Note 2: See Figure 3.
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(INTERFACE IDLE, ALL OUTPUTS OFF,
RSET = 720Ω)
MAX6969 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5.04.53.5 4.0
2.75
3.00
3.25
3.50
3.75
4.00
4.25
4.50
2.50
3.0 5.5
TA = +125°CTA = +85°C
TA = -40°C
TA = +25°C
4.0
4.6
4.4
4.2
4.8
5.0
5.2
5.4
5.6
5.8
6.0
3.0 4.03.5 4.5 5.0 5.5
MAX6969 toc02
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
TA = +125°CTA = +85°C
TA = -40°C
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(INTERFACE IDLE, ALL OUTPUTS
OFF, RSET = 360Ω)
TA = +25°C
6
8
16
14
12
10
18
20
3.0 4.03.5 4.5 5.0 5.5
MAX6969 toc03
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(INTERFACE IDLE, ALL OUTPUTS ON, RSET = 720Ω)
TA = +125°CTA = +85°C
TA = +25°C
TA = -40°C
MAX6969
16-Port, 5.5V Constant-Current LED Driver
_______________________________________________________________________________________ 5
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
10
12
16
14
22
20
18
3.0 4.03.5 4.5 5.0 5.5
MAX6969 toc04
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(INTERFACE IDLE, ALL OUTPUTS ON, RSET = 360Ω)
TA = +125°CTA = +85°C
TA = +25°C
TA = -40°C
0
10
5
20
15
25
30
0 1.0 1.50.5 2.0 2.5 3.0
PORT OUTPUT CURRENT vs. PORT OUTPUT
VOLTAGE (RSET = 720Ω, V+ = 3.3V)
MAX6969 toc05
PORT OUTPUT VOLTAGE (V)
PORT OUTPUT CURRENT (mA)
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
0
20
10
40
30
50
60
0 1.0 1.50.5 2.0 2.5 3.0
PORT OUTPUT CURRENT vs. PORT OUTPUT
VOLTAGE (RSET = 360Ω, V+ = 3.3V)
MAX6969 toc06
PORT OUTPUT VOLTAGE (V)
PORT OUTPUT CURRENT (mA)
TA = +125°C
TA = +85°C
TA = -40°C
TA = +25°C
0
10
5
20
15
25
30
0 1.0 1.50.5 2.0 2.5 3.0
PORT OUTPUT CURRENT vs. PORT OUTPUT
VOLTAGE (RSET = 720Ω, V+ = 5.0V)
MAX6969 toc07
PORT OUTPUT VOLTAGE (V)
PORT OUTPUT CURRENT (mA)
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
0
20
10
40
30
50
60
0 1.0 1.50.5 2.0 2.5 3.0
PORT OUTPUT CURRENT vs. PORT OUTPUT
VOLTAGE (RSET = 360Ω, V+ = 5.0V)
MAX6969 toc08
PORT OUTPUT VOLTAGE (V)
PORT OUTPUT CURRENT (mA)
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
27.0
26.5
26.0
25.5
25.0
24.5
24.0
3.0 4.0
3.5 4.5 5.0 5.5
PORT OUTPUT CURRENT vs. SUPPLY
VOLTAGE (RSET = 720Ω, VOUT = 2V)
MAX6969 toc09
SUPPLY VOLTAGE (V)
PORT OUTPUT CURRENT (mA)
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
54
53
52
51
50
49
3.0 4.0
3.5 4.5 5.0 5.5
PORT OUTPUT CURRENT vs. SUPPLY
VOLTAGE (RSET = 360Ω, VOUT = 2V)
MAX6969 toc10
SUPPLY VOLTAGE (V)
PORT OUTPUT CURRENT (mA)
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
0
10
30
20
40
50
0 600300 900 1200 1500
PORT OUTPUT CURRENT
vs. RSET RESISTANCE (V+ = 5.0V)
MAX6969 toc11
RSET RESISTANCE (Ω)
PORT OUTPUT CURRENT (mA)
MAX6969
16-Port, 5.5V Constant-Current LED Driver
6 _______________________________________________________________________________________
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.
4LE
Load-Enable Input. Data is loaded transparently from the internal shift register(s) to the output latch(es)
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 5.5V.
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.
SERIAL-TO-PARALLEL SHIFT REGISTER
LATCHES
OUT0
OUT1
OUT2
DOUTDIN
CLK
OUT7
CONSTANT-CURRENT SINKS
OUT5
OUT6
POWER-ON
RESET V+
CURRENT
REFERENCE
OE
GND GND
LE
D0 D15
D0 D15
D0 D15
RSET
MAX6969
V+
Figure 1. Block Diagram
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 guaranteed for current accuracy
not only with chip-supply voltage variations (5V ±10%
and 3V to 5.5V), but also over a realistic range of driver
output voltage drop (0.5V to 2.5V). The drivers use cur-
rent-sensing feedback circuitry (not simple current mir-
rors) to ensure very small current variations over the full
allowed range of output voltage (see the Typical
Operating Characteristics).
The 4-wire serial interface comprises a 16-bit shift reg-
ister and a 16-bit transparent latch. The shift register is
written through a clock input, CLK, and a data input,
DIN, and the data propagates to a data output, DOUT.
The data output allows multiple drivers to be cascaded
and operated together. The contents of the 16-bit shift
register are loaded into the transparent latch through a
latch-enable input, LE. The latch is transparent to the
shift register outputs when high, and latches the current
state on the falling edge of LE.
Each driver output is an open-drain, constant-current
sink that should be connected to the cathode of either
a single LED or a series string of multiple LEDs. The
LED anode can be connected to a supply voltage of up
to 5.5V, independent of the MAX6969 supply, V+. The
constant-current capability is up to 55mA per output,
set for all eight outputs by an external resistor, RSET.
Initial Power-Up and Operation
An internal reset circuit clears the internal registers of
the MAX6969 on power-up. All outputs (OUT0–OUT15)
initialize to high impedance, regardless of the initial
logic levels of the CLK, DIN, OE, and LE inputs.
4-Wire Serial Interface
The serial interface on the MAX6969 is a 4-wire serial
interface using four inputs (DIN, CLK, LE, OE) and a
data output (DOUT). This interface is used to write dis-
play data to the MAX6969. The serial-interface data
word length is 16 bits, D0–D15. See Figure 2.
The functions of the five interface pins are as follows.
DIN is the serial-data input, and must be stable when it
is sampled on the rising edge of CLK. Data is shifted in,
MSB first. This means that data bit D15 is clocked in
first, followed by 15 more data bits finishing with the
LSB, D0.
MAX6969
16-Port, 5.5V Constant-Current LED Driver
_______________________________________________________________________________________ 7
.
D15 D14
tDS
tDH
tCL
tCP
tDO
tOEW
tOEL
tftr
tOEH
tLS
tLW
tCH
D1 D0
D7
LE
CLK
DIN
DOUT
OE
OUT_
80%
20%
Figure 2. 4-Wire Serial-Interface Timing Diagram
MAX6969
16-Port, 5.5V Constant-Current LED Driver
8 _______________________________________________________________________________________
CLK is the serial-clock input, which shifts data at DIN
into the MAX6969 16-bit shift register on its rising edge.
LE is the latch load input of the MAX6969 that transfers
data from the MAX6969 16-bit shift register to its 16-bit
latch when LE is high (transparent latch), and latches
the data on the falling edge of LE (Figure 2).
The fourth input provides output-enable control of the
output drivers. OE is high to force outputs
OUT0–OUT15 high impedance, without altering the
contents of the output latches, and low to enable out-
puts OUT0–OUT15 to follow the state of the output
latches.
OE is independent of the operation of the serial inter-
face. Data can be shifted into the serial-interface shift
register and latched, regardless of the state of OE.
DOUT is the serial-data output, which shifts data out
from the MAX6969’s 16-bit shift register on the rising
edge of CLK. Data at DIN is propagated through the
shift register and appears at DOUT 16 clock cycles later.
LE
OUT_
LE
OUT_
CLK
OUT_
CLK
OUT_
tCRR
tCRF
tLRR
tLRF
Figure 3. LE and CLK to OUT_ Timing
Table 1. 4-Wire Serial-Interface Truth Table
SHIFT-REGISTER
CONTENTS LATCH CONTENTS OUTPUT CONTENTS
SERIAL
DATA
INPUT
DIN
CLOCK
INPUT
CLK D0D1D2…D
n-1 Dn
LOAD
INPUT
LE D0D1D2…D
n-1 Dn
BLANKING
INPUT
OE D0D1D2…D
n-1 Dn
HHR
0R1…R
n-2 Rn-1 ——————— — — —————
LLR
0R1…R
n-2 Rn-1 ——————— — — —————
XR
0R1R2…R
n-1 Rn——————— — — —————
——
XXX…XX L R0R1R2—R
n-1 Rn— — —————
——P
0P1P2…P
n-1 PnHP0P1P2…P
n-1 PnLP
0P1P2…P
n-1 Pn
— — —————— — XXX…XX H Hi-Z Hi-Z Hi-Z … Hi-Z Hi-Z
L = Low-logic level.
H = High-logic level.
X = Don’t care.
P = Present state.
R = Previous state.
Hi-Z = High impedance.
Applications Information
Selecting External Component RSET to Set
LED Output Current
The MAX6969 uses an external resistor, RSET, to set the
LED current for outputs OUT0–OUT15. The minimum
allowed value of RSET is 327.3Ω, which sets the output
currents to 55mA. The maximum allowed value of RSET
is 1.5kΩ. The reference value, 360Ω, sets the output
currents to 50mA. To set a different output current, use
the formula:
RSET = 18,000 / IOUT
where IOUT is the desired output current in mA.
Computing Power Dissipation
The upper limit for power dissipation (PD) for the
MAX6969 is determined by the following equation:
PD= (V+ x I+) + (VOUT x DUTY x IOUT x N)
where:
V+ = supply voltage
I+ = operating supply current when sinking IOUT LED
drive current into N outputs
DUTY = PWM duty cycle applied to OE
N = number of MAX6969 outputs driving LEDs at the
same time (maximum is 16)
VOUT = MAX6969 port output voltage when driving load
LED(s)
IOUT = LED drive current programmed by RSET
PD= power dissipation, in mW if currents are in mA
Dissipation example:
IOUT = 47mA, N = 16, DUTY = 1, VOUT = 2V, V+ =
5.25V
PD= (5.25V x 50mA) + (2V x 1 x 47mA x 16) = 1.767W
Thus, for a 24-pin TSSOP package (TJA = 1 / 0.0122 =
+82°C/W from the Absolute Maximum Ratings), the
maximum allowed ambient temperature TAis given by:
TJ(MAX) = TA+ (PDx TJA) = +150°C =
TA+ (1.767 x 82°C/W)
so TA= +145.6°C.
Overtemperature Cutoff
The MAX6969 contains an internal temperature sensor
that turns off all outputs when the die temperature
exceeds approximately +165°C. The outputs are
enabled again when the die temperature drops below
approximately +140°C. Register contents are not
affected, so when a driver is overdissipating, the exter-
nal symptom is the load LEDs cycling between on and
off as the driver repeatedly overheats and cools, alter-
nately turning the LEDs off and then back on again.
Power-Supply Considerations
The MAX6969 operates with a chip supply V+, and one
or more LED supplies. Bypass each supply to GND
with a 0.1µF capacitor as close to the MAX6969 as pos-
sible. This is normally adequate for static LED driving.
For multiplex or PWM applications, it is necessary to
add an additional bulk electrolytic capacitor of 4.7µF or
more to each supply for every 4 to 16 MAX6969s. The
necessary capacitance depends on the LED load cur-
rent, PWM switching frequency, and serial-interface
speed. Inadequate V+ decoupling can cause timing
problems, and very noisy LED supplies can affect LED
current regulation.
MAX6969
16-Port, 5.5V Constant-Current LED Driver
_______________________________________________________________________________________ 9
MAX6969
16-Port, 5.5V Constant-Current LED Driver
10 ______________________________________________________________________________________
µC
MOSI
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
SCLK
DIN
CLK
0V
GND
MISO DOUT
0V
360Ω
OEENABLE
+5V
V+
+5V
LELOAD
SET
MAX6969
OUT8
OUT9
OUT10
OUT11
OUT12
OUT13
OUT14
OUT15
Typical Application Circuit
Selector Guide
PART NO. OF
OUTPUTS
MAX OUTPUT
VOLTAGE (V)
MAX OUTPUT
CURRENT
LED FAULT
DETECTION WATCHDOG
MAX6968 ——
MAX6977 Yes —
MAX6978
8 5.5
Yes Yes
MAX6970 ——
MAX6981 Yes —
MAX6980
836
Yes Yes
MAX6969 ——
MAX6984 Yes —
MAX6979
16 5.5
Yes Yes
MAX6971 ——
MAX6982 Yes —
MAX6983
16 36
55mA
Yes Yes
MAX6969
16-Port, 5.5V Constant-Current LED Driver
______________________________________________________________________________________ 11
Package Information
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in
the package code indicates RoHS status only. Package draw-
ings may show a different suffix character, but the drawing per-
tains to the package regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
24 PDIP N24+1 21-0043
24 TSSOP U24+1 21-0066
24 Wide SO W24+1 21-0042
Chip Information
PROCESS: BiCMOS
MAX6969
16-Port, 5.5V Constant-Current LED Driver
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 Maxim is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
3 6/10 Updated Ordering Information, Absolute Maximum Ratings, Electrical
Characteristics, and Table 1 1, 2, 8
