provide microprocessors with 10 I/O ports rated to 7V.
Each port can be individually configured as either:
• A 20mA constant-current LED driver (static or pulse-
width modulated (PWM)).
• A 10mA constant-current LED driver (static or PWM).
• An open-drain logic output.
• An overvoltage-protected Schmitt logic input.
Analog and switching LED intensity control is built in:
• Individual 8-bit PWM control per output.
• Individual 1-bit analog control (half/full) per output.
• Global 3-bit analog control applies to all LED outputs.
PWM timing of the 10 port outputs may be optionally
staggered, consecutively phased in 45° increments.
This spreads the PWM load currents over time in eight
steps, helping to even out the power-supply current
and reduce the RMS current.
The MAX6966/MAX6967 can be configured to awake
from shutdown on receipt of a minimum 3ms pulse on
the
CS
input. This hardware-wakeup feature allows a
power-management controller or similar ASIC to enable
the MAX6966/MAX6967 with preconfigured LED intensi-
ty settings.
Shutdown can be programmed to wait up to 4s, fade
down the sink currents to zero for a period of 1/16s to
Functional Diagrams
4s, and then shut down. A similar ramp-up from shut-
down can be programmed for 1/16s to 4s.
The MAX6966/MAX6967 support hot insertion. All port
pins remain high impedance in power-down (V+ = 0V)
with up to 8V asserted on them.
The DOUT/OSC pin can be configured as either the
serial interface data output or optional PWM clock
input. The MAX6966 powers up defaulting as DOUT
output. The MAX6967 defaults as OSC input.
For a similar part without the constant-current controls,
refer to the MAX7317 data sheet.
AVAILAB
LE
Features
♦
High-Speed 26MHz SPI-™/QSPI-™/MICROWIRE™-
Compatible Serial Interface
♦
2.25V to 3.6V Operation
♦
I/O Ports Default to High-Z (LEDs Off) on Power-Up
♦
I/O Port Inputs Are Overvoltage Protected to 7V
♦
I/O Port Outputs Are 7V-Rated Open Drain
♦
I/O Port Outputs Are 10mA or 20mA Constant-
Current Static/PWM LED Drivers, or Open-Drain
Logic Outputs
♦
I/O Ports Support Hot Insertion
♦
Individual 8-Bit PWM Intensity Control for Each LED
♦
Any Output May Use or Not Use PWM Control
♦
Exit Shutdown (Warm Start) with Simple
CS
Pulse
♦
Auto Ramp-Down into Shutdown
♦
Auto Ramp-Up Out from Shutdown
♦
0.8µA (typ), 2µA (max) Shutdown Current
♦
Tiny 3mm x 3mm, 0.8mm High Thin QFN Package
Ordering Information
♦
-40°C to +125°C Temperature Range
Ordering Information
PART
TEMP
RANGE
-40°C to
+125°C
-40°C to
+125°C
-40°C to
+125°C
-40°C to
+125°C
PIN-
PACKAGE
16 Thin QFN
3mm x 3mm x
0.8mm
16 QSOP
16 Thin QFN
3mm x 3mm x
0.8mm
16 QSOP
TOP
MARK
ACF
PKG
CODE
T1633-4
MAX6966ATE
MAX6966AEE
—
—
MAX6967ATE
ACG
T1633-4
Applications
LCD Backlights
Keypad Backlights
LED Status Indication
RGB LED Drivers
Portable Equipment
Cellular Phones
MAX6967AEE
—
—
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
UCSP is a trademark of Maxim Integrated Products, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-3487; Rev 2; 4/05
MAX6966/MAX6967
10-Port Constant-Current LED Drivers and I/O
Expanders with PWM Intensity Control
ABSOLUTE MAXIMUM RATINGS
Voltage (with respect to GND)
V+ .............................................................................-0.3V to +4V
SCLK, DIN,
CS,
DOUT/OSC.........................-0.3V to (V+ + 0.3V)
P_ .............................................................................-0.3V to +8V
DC Current into P_ .............................................................24mA
DC Current into DOUT/OSC................................................10mA
Total GND Current ............................................................280mA
Continuous Power Dissipation
16-Pin QSOP (derate 8.3mW/°C over T
A
= +70°C) ....667mW
16-Pin QFN (derate 14.7mW/°C over T
A
= +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
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.
ELECTRICAL CHARACTERISTICS
(Typical
Operating Circuit,
V+ = 2.25V 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
Operating Supply Voltage
Output Load External Supply
Voltage P0–P9
Standby Current
(Interface Idle, CS Run Disabled,
PWM Disabled, All Ports High
Impedance)
Supply-Current Interface Only
(CS Run Enabled, PWM
Disabled, All Ports High
Impedance)
Delta Supply Current per 10mA
Port (Interface Idle, Global
Current Register Set to 0x07, One
Port's Output Register Set to
0x02 and Its Output Current
Register Bit Cleared; All Other
Ports’ Output Registers Set to
0x00, 0x01, or 0xFF)
Delta Supply Current per 20mA
Port
(Interface Idle, Global Current
Register Set to 0x07, One Port's
Output Register Set to 0x02 and Its
Output Current Register Bit Set; All
Other Ports’ Output Registers Set to
0x00, 0x01, or 0xFF)
SYMBOL
V+
V
EXT
T
A
= +25°C
I
STBY
CS
at V+; other digital
inputs at V+ or GND
T
A
= T
MIN
to +85°C
T
A
= T
MIN
to T
MAX
f
SCLK
= 26MHz, other
digital inputs at V+ or
GND; DOUT unloaded
T
A
= +25°C
T
A
= T
MIN
to +85°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
∆I
+10
Digital inputs at V+ or
GND
1.58
390
0.7
CONDITIONS
MIN
2.25
TYP
MAX
3.60
7
1.5
1.7
1.9
620
680
730
1.8
µA
µA
UNITS
V
V
I
+
T
A
= T
MIN
to +85°C
1.9
mA
T
A
= T
MIN
to T
MAX
2
T
A
= +25°C
∆I
+20
Digital inputs at V+ or
GND
T
A
= T
MIN
to +85°C
3.2
3.6
3.8
mA
T
A
= T
MIN
to T
MAX
4.0
2
Maxim Integrated
MAX6966/MAX6967
10-Port Constant-Current LED Drivers and I/O
Expanders with PWM Intensity Control
ELECTRICAL CHARACTERISTICS (continued)
(Typical
Operating Circuit,
V+ = 2.25V 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
Input High Voltage
(P0–P9, DIN, SCLK,
CS,
OSC)
Input Low Voltage
(P0–P9, DIN, SCLK,
CS,
OSC)
Input Leakage Current
(P0–P9, DIN, SCLK,
CS,
OSC)
Input Capacitance
(P0–P9, DIN, SCLK,
CS,
OSC)
Port Nominal Sink Constant
Current
(P0–P9) (Global Current Register
Set to 0x07)
Port Logic Output Low Voltage
(P0–P9)
Port Logic Output Low Short-
Circuit Current (P0–P9)
Port Slew Time
Port Sink Constant-Current
Matching
SYMBOL
V
IH
V
IL
I
IH
, I
IL
(Note 2)
Output register set to
0x02,
V+ = 3.3V, V
EXT
- V
LED
=
1V to 2.5V (Note 3)
Output register set to 0x00,
I
SINK
= 0.5mA
Output register set to 0x00,
V
OLP_
= 5V
From 20% current to 80% current
T
A
= +25°C, V+ = 3.3V, V
EXT
- V
LED
= 1.4V,
I
OUT
= 20mA
T
A
= +25°C, V+ = 3.3V, V
EXT
- V
LED
= 1.4V,
I
OUT
= 10mA
I
SOURCE
= 6mA
I
SINK
= 6mA
V+ -
0.3V
0.3
10.8
2
±1.5
±2
±4
%
±5
V
V
T
A
= +25°C
T
A
= T
MIN
to
+85°C
19.3
9.5
18.8
9.1
CONDITIONS
P0–P9: output register set to 0x01
P0–P9: output register set to 0x01
-0.2
10
20
10
21.1
10.7
21.8
11.0
0.4
20
V
mA
µs
mA
MIN
0.7 x
V+
0.3 x
V+
+0.2
TYP
MAX
UNITS
V
V
µA
pF
I
OUT
V
OLP_
∆I
OUT
Output High Voltage
(DOUT)
Output Low Voltage
(DOUT)
V
OHDOUT
V
OLDOUT
Maxim Integrated
3
MAX6966/MAX6967
10-Port Constant-Current LED Drivers and I/O
Expanders with PWM Intensity Control
TIMING CHARACTERISTICS
(Typical
Operating Circuit,
V+ = 2.25V 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
Internal PWM Clock Frequency
External PWM Clock Frequency
SCLK Clock Period
SCLK Pulse Width High
SCLK Pulse Width Low
CS
Fall to SCLK Rise Setup Time
SCLK Rise to
CS
Rise Hold Time
DIN Setup Time
DIN Hold Time
Output Data Propagation Delay
DOUT Output Rise and Fall
Times
Minimum
CS
Pulse High
CS
Pulse Low to Not Activate CS
Run
CS
Pulse Width to Activate CS
Run
SYMBOL
f
INT
f
OSC
t
CP
t
CH
t
CL
t
CSS
t
CSH
t
DS
t
DH
t
DO
t
FT
t
CSW
t
CSRUN
t
CSRUN
CS run enabled
CS run enabled
3
C
LOAD
= 20pF
38.4
640
38.4
19
19
9.5
0
9.5
0
21
10
CONDITIONS
MIN
27000
TYP
MAX
45000
100
UNITS
Hz
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ms
Note 1:
All parameters tested at T
A
= +25°C. Specifications over temperature are guaranteed by design.
Note 2:
Guaranteed by design.
Note 3:
Port current is factory trimmed to meet a median sink current of 20mA and 10mA over all 10 ports. The
[i=s]This post was last edited by yanruiqi5678 on 2020-10-8 16:59[/i]Dear experts, please tell me: When micropython esp8266 WIFI is set to AP mode, 1. How can I get the IP address and other informatio...
Abstract : Fixed-point DSP is used in the electric power meter calibration system to measure AC voltage and current signals. Because it is a calibration instrument, the measurement results are require...
[size=16px]Looking for low-cost wireless video transmission chip, single chip, Wi-Fi standard, and BCM4322 or STLC4420, chip information. Chip model is also OK, thank you! ! ! [/size]...
I'm learning vxworks recently. I've installed a virtual machine. The sound card of the virtual machine is the sound card of the PC. Now I want to try to let vxworks play .wav and other audio files. Ac...
Is there any friend who is good at EDA programming? ? Help me~~, each clock pulse decreases by 1, and stops when it decreases to 0, and sends out an alarm signal that the time is up. When the alarm oc...
From being a global leader to losing the market, Korean battery manufacturers have always wanted to regain the lost market and dignity, but facing Chinese battery manufacturers represented by CAT...[Details]
introduction
Bluetooth technology is a short-range wireless communication technology designed to replace wired cables. It is a wireless communication technology standard developed by the SIG, ...[Details]
Electric motors and internal combustion engines of the same power have similar torque levels. High power requires high torque, and torque determines a vehicle's acceleration speed, commonly known a...[Details]
Introduction to the principles of speech recognition technology
Automatic speech recognition (ASR) technology aims to enable computers to understand human speech and extract the textual inform...[Details]
In mobile technology, sensors are the primary input for measured signals and form a component of a sensor system. They include sensitive and transducer elements connected to carriers and circuits. ...[Details]
On August 22, the National Energy Administration released the latest data, showing that by the end of July 2025, China's total number of electric vehicle charging infrastructure will reach 16.696 m...[Details]
Linear motor modules have become the "sweet spot" in various fields due to their advantages such as long stroke, fast speed, high precision, smooth operation and long life. Different models of line...[Details]
Teletrac Navman has launched the Multi IQ dashcam, a cloud-based solution designed for large commercial vehicle operators. It connects up to five cameras to cover the vehicle's interior, sides, and...[Details]
Over the past decade, the narrative surrounding fuel vehicles has been one of decline and replacement. Under the onslaught of new energy vehicles, traditional automakers have been forced to acceler...[Details]
With the advancement of science and technology and the promotion of green, energy-saving, and circular development, the demand for precise control and accurate measurement is increasing. In the pow...[Details]
We often hear about the precautions for using pure electric vehicles in winter, and many owners even develop relevant strategies, such as adopting a "charge as you go" principle for their vehicles,...[Details]
With the gradual popularization of new energy vehicles in recent years, more and more people have been able to access and purchase electric vehicles. The structure of electric vehicles is composed ...[Details]
Electric vehicles are composed of three main components: electric motors, electric motors, and electric vehicles. Maintenance is much simpler than for gasoline-powered vehicles. Maintenance for ele...[Details]
Electric vehicles will revolutionize transportation, changing fuel consumption, carbon emissions, costs, maintenance, and driving habits. Currently, a major selling point for electric vehicles is t...[Details]
Common Mode Semiconductor has officially launched the GM6503 series—a 5 V, 3 A synchronous step-down DC/DC power module designed for optical communications, servers, industrial applications, and FP...[Details]
MicroPython Open Source section
京公网安备 11010802033920号
EEWORLD
