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MAX6965ATE+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22
MAX6965
9-Output LED Driver with Intensity Control
and Hot-Insertion Protection
________________________________________________________________ Maxim Integrated Products 1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
General Description
The MAX6965 I
2
C-compatible serial interfaced periph-
eral provides microprocessors with nine additional out-
put ports. Each output is an open-drain current-sinking
output rated to 50mA at 7V. All outputs are capable of
driving LEDs, or providing logic outputs with external
resistive pullup up to 7V.
Eight-bit PWM current control is also integrated. Four of
the bits are global control and apply to all LED outputs
to provide coarse adjustment of current from fully off to
fully on with 14 intensity steps. Additionally each output
then has an individual 4-bit control, which further
divides the globally set current into 16 more steps.
Alternatively, the current control can be configured as a
single 8-bit control that sets all outputs at once.
Each output has independent blink timing with two blink
phases. LEDs can be individually set to be either on or off
during either blink phase, or to ignore the blink control.
The blink period is controlled by an external clock (up to
1kHz) on BLINK or by a register. The BLINK input can also
be used as a logic control to turn the LEDs on and off, or
as a general-purpose input (GPI).
The MAX6965 supports hot insertion. The SDA, SCL,
RST, BLINK, and the slave address input AD0 remain
high impedance in power-down (V+ = 0V) with up to 6V
asserted upon them. The output ports remain high
impedance with up to 8V asserted upon them.
The MAX6965 is controlled through a 2-wire I
2
C serial
interface, and can be configured to one of four I
2
C
addresses.
Applications
LCD Backlights
LED Status Indication
Keypad Backlights
RGB LED Drivers
Features
♦ 400kbps, 2-Wire Serial Interface, 5.5V Tolerant
♦ 2V to 3.6V Operation
♦ Overall 8-Bit PWM LED Intensity Control
Global 16-Step Intensity Control
Plus Individual 16-Step Intensity Controls
♦ Two-Phase LED Blinking
♦ High Port Output Current—Each Port 50mA (max)
♦ RST Input Clears Serial Interface and Restores
Power-Up Default State
♦ Supports Hot Insertion
♦ Outputs are 7V-Rated Open Drain
♦ Low Standby Current (1.2µA (typ), 3.3µA (max))
♦ Tiny 3mm x 3mm, Thin QFN Package
♦ -40°C to +125°C Temperature Range
MAX6965
O0
O1
O2
O3
O4
O5
V+
3.3V
µC
SDA
SCL
SDA
I/O
I/O
AD0
6V
O6
O7
O8
SCL
RELAY
RELAY
GND
7V
0.047µF
RST
BLINK
RELAY
Typical Application Circuit
19-3058; Rev 3; 3/05
EVALUATION KIT
AVAILABLE
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE
TOP
MARK
PKG
CODE
MAX6965ATE
-40°C to
+125°C
16 Thin QFN
3mm x 3mm
x 0.8mm
AAW T1633-4
MAX6965AEE
-40°C to
16 QSOP
——
Pin Configurations appear at end of data sheet.
P
.,
oa
li
-
n
e
I
2
Cs.
MAX6965
9-Output LED Driver with Intensity Control
and Hot-Insertion Protection
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 +4V
SCL, SDA, AD0, BLINK, RST ...................................-0.3V to +6V
O0–O8 ......................................................................-0.3V to +8V
DC Current on O0 to O8 .....................................................55mA
DC Current on SDA.............................................................10mA
Maximum GND Current ....................................................190mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin QSOP (derate 8.3mW/°C over +70°C)..............666mW
16-Pin QFN (derate 14.7mW/°C over +70°C) ............1176mW
Operating Temperature Range (T
MIN
to T
MAX
) ...-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(Typical Operating Circuit, V+ = 2V to 3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = 3.3V, T
A
= +25°C.)
(Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Operating Supply Voltage V+
2.0 3.6
V
Output Load External Supply
Voltage
V
EXT
07V
T
A
= +25°C
1.2 2.3
T
A
= -40°C to +85°C 2.6
Standby Current
(Interface Idle, PWM Disabled)
I
+
S C L and S D A at V + ; other
d i g i tal i np uts at V + or GN D ;
P WM i ntensi ty contr ol d i sab l ed
T
A
= T
MIN
to T
MAX
3.3
µA
T
A
= +25°C 7
12.1
T
A
= -40°C to +85°C 13.3
Supply Current
(Interface Idle, PWM Enabled)
I
+
S C L and S D A at V + ; other
d i g i tal i np uts at V + or GN D ;
P WM i ntensi ty contr ol enab l ed
T
A
= T
MIN
to T
MAX
14.4
µA
T
A
= +25°C 40 76
T
A
= -40°C to +85°C
78
Supply Current
(Interface Running, PWM
Disabled)
I
+
f
SCL
= 400kHz; other digital
inputs at V+ or GND; PWM
intensity control disabled
T
A
= T
MIN
to T
MAX
80
µA
T
A
= +25°C 51
110
T
A
= -40°C to +85°C 117
Supply Current
(Interface Running, PWM
Enabled)
I
+
f
SCL
= 400kHz; other digital
inputs at V+ or GND; PWM
intensity control enabled
T
A
= T
MIN
to T
MAX
122
µA
Input High Voltage
SDA, SCL, AD0, BLINK, RST
V
IH
0.7 x
V+
V
Input Low Voltage
SDA, SCL, AD0, BLINK, RST
V
IL
0.3 x
V+
V
Input Leakage Current
SDA, SCL, AD0, BLINK, RST
I
IH
, I
IL
Input = GND or V+
-0.2 +0.2
µA
Input Capacitance
SDA, SCL, AD0, BLINK, RST
8pF
MAX6965
9-Output LED Driver with Intensity Control
and Hot-Insertion Protection
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(Typical Operating Circuit, V+ = 2V to 3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = 3.3V, T
A
= + 25°C.)
(Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
T
A
= +25°C
0.15 0.25
T
A
= -40°C to +85°C 0.29
V+ = 2V, I
SINK
= 20mA
T
A
= T
MIN
to T
MAX
0.31
T
A
= +25°C
0.13 0.22
T
A
= -40°C to +85°C 0.25
V+ = 2.5V, I
SINK
= 20mA
T
A
= T
MIN
to T
MAX
0.27
T
A
= +25°C
0.12 0.22
T
A
= -40°C to +85°C 0.23
Output Low Voltage
O0–O8
V
OL
V+ = 3.3V, I
SINK
= 20mA
T
A
= T
MIN
to T
MAX
0.25
V
Output Low-Voltage SDA
V
OLSDA
I
SINK
= 6mA
0.4
V
PWM Clock Frequency f
PWM
32
kHz
TIMING CHARACTERISTICS
(Typical Operating Circuit, V+ = 2V to 3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = 3.3V, T
A
= +25°C.)
(Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Serial Clock Frequency f
SCL
400 kHz
Bus Free Time Between a STOP and a START
Condition
t
BUF
1.3
µs
Hold Time, Repeated START Condition
t
HD
,
STA
0.6
µs
Repeated START Condition Setup Time
t
SU
,
STA
0.6
µs
STOP Condition Setup Time
t
SU
,
STO
0.6
µs
Data Hold Time
t
HD
,
DAT
(Note 2)
0.9
µs
Data Setup Time
t
SU
,
DAT
180
ns
SCL Clock Low Period t
LOW
1.3
µs
SCL Clock High Period t
HIGH
0.7
µs
t
R
(Notes 3, 4)
20 +
0.1C
b
300
ns
Fall Time of Both SDA and SCL Signals, Receiving t
F
(Notes 3, 4)
20 +
0.1C
b
300
ns
Fall Time of SDA Transmitting t
F.TX
(Notes 3, 5)
20 +
0.1C
b
250
ns
Pulse Width of Spike Suppressed t
SP
(Note 6) 50 ns
Capacitive Load for Each Bus Line C
b
(Note 3)
400
pF
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P22

MAX6965ATE+

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Manufacturer:
Maxim Integrated
Description:
LED Display Drivers 9-Output LED Driver
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