Download Bright ideas for LED applications

Bright ideas for LED
applications
LED solutions for gaming, mobile, signage,
LCD TV backlighting, LED indication, and more
Bright ideas for LED applications
At NXP Semiconductors, we have a portfolio filled
with bright ideas for LED applications. We design
for high performance and lower overall cost,
focusing on power efficiency and flexible design-in.
We even give you a head start on design, with
application boards and daughter cards, and have
an established manufacturing infrastructure that
supports very high volumes.
As the world’s leading provider of products based
on the I2C-bus, we work closely with our customers
and partners to develop next-generation LED
solutions. That means you get options like Fastmode Plus, a wide supply range (2.3 to 5.5 V),
and flexible PWM functions. It also means ultralow standby modes (<1 µA), lower overhead on
the CPU, and extended battery life in mobile
applications.
It’s everything you need to make lighting
affordable, in everything from mobile handsets and
gaming systems to outdoor billboards, signage, and
more.
The table below provides an overview of the special
benefits we bring to specific LED applications. The
rest of the brochure highlights key products in the
portfolio.
NXP LED applications
Gaming
4 I2C-bus enables easy system modification and designs that are easy to scale
4 Voltage-switch PWM dissipates current in external resistor to reduce on-chip heating
4 Long-distance communication is easy to implement
4 Individual addresses are available, as are programmable sub-calls. That means groups of
devices can responds to the same software commands, and thus reduce overhead
4 Bus controllers and bus buffers make it easy to combine the I2C-bus with any processor
Mobile
4 Up to 30% longer battery standby times
4 Ultra-low power consumption in standby modes (< 1 µA)
4 Memorizes complex blink patterns, offloads CPU
Signage
4 Lower-cost, drop-in replacements for Silicon Touch ST2221A and
STMicroelectronics STP08CDC596
4 Ample manufacturing capacity for high-volume production
LED TV
backlighting
4 Very low power surge, due to staggered ON time, which reduces EMI
4 Supports driving external FETs or switched-mode regulators, for higher voltage/
current LED strings
4 E xternal clock input supports device synchronization, to eliminate noise and artifacts
LED
indication
4 Simple I2C-bus firmware
4 O ffload the microcontroller, since it doesn’t have to communicate after the LED is programmed,
and it doesn’t have to manage LED power
4 Unused bits can be put to use as GPIO
For more information, visit www.nxp.com/i2c
NXP I2C-bus interface LED voltage sources PCA962x and PCA963x
VDD = 2.5 V, 3.3 V or 5.0 V
5V
10 kΩ
10 kΩ
12 V
10 kΩ(1)
VDD
SDA
SDA
PWM
SCL
SCL
PWM
OE
OE
PWM
PWM
PCA962x family
4 I2C-bus interface = Fast-mode Plus
4 SDA/SCL = 1 MHz and 30 mA
4 Supply = 2.3 to 5.5 V
4256 step duty cycle adjustment PWM for each bit plus
global PWM for all bits
4 Operation = 40 V, 100 mA for all outputs
4 SO, TSSOP, HVQFN packages
PWM
I2C-bus/SMBus
master
PCA9633
PCA9623
4-channel I2C-bus interface LED voltage source
PCA9624
8-channel I2C-bus interface LED voltage source
PCA9622
16-channel I2C-bus interface LED voltage source
The PCA9633 driving LEDs directly, or for higher voltage/current capability,
PCA9626
24-channel I C-bus interface LED voltage source
through transistors or through a FET.
2
3.3 V
PCA963x family
4 I2C-bus interface = Fast-mode Plus
4 SDA/SCL = 1 MHz and 30 mA
4 Supply = 2.3 to 5.5 V
4256 step duty cycle adjustment PWM for each bit plus
global PWM
4 Operation = 5 V, 25 mA for all outputs
4Push-pull outputs enable glue less connection to FET or
switched-mode regulators
4 PCA9632 with ultra-low power standby mode (< 1 µA)
4 SO, TSSOP, HVSON, HVQFN packages
PCA9632
Low-power, 4-channel I2C-bus interface LED voltage
source
PCA9633
4-channel I2C-bus interface LED voltage source
PCA9634
8-channel I2C-bus interface LED voltage source
PCA9635
16-channel I2C-bus interface LED voltage source
Also recommended
PCA9600
I2C-bus buffer
PCA9665
I2C-bus controller
3.3 V
5V
R1
5V
Bus B
5V
PCA9600
Bus A
3.3 V
CM
R2
Rx
CPU
Sx
Tx
5V
3.3 V
R2
Cable
Cable
PCA9633
1/2
bat
54A
3.3 V
PCA9633
1/2
bat
54A
The PCA9633 in a typical long-distance cable architecture
1/2
bat
54A
NXP I2C-bus interface LED voltage source with 12-bit PWM PCA9685
Features
4 I2C-bus interface = Fast-mode Plus
4 SDA = 1 MHz and 30 mA
4 Supply = 2.3 to 5.5 V
4 4096 step duty cycle adjustment PWM for each bit
4 Frequency = 100 to 1000 Hz
4External clock option allows synchronization and frequency
control
4 Staggered ON times reduce current surge
4 Operation = 5 V, 25 mA for all outputs
4Push-pull outputs enable glue less connection to FET or
switched-mode regulators
4 TSSOP, HVQFN packages
Current mode DG
DC converter
R
350 mA to 1A
R
32-48
LED strings
R
G
Turn on delay features
avoids spikes from PSU
G
G
B
B
B
RGB color
sensor
Microcontroller
I 2C
PCA9685
Duty cycle controls the
individual dimming of the LED strings
The PCA9685 in a typical RGB LED architecture with FET and current source
NXP 1-wire interface current source LED driver PCA9901
Features
4 Supply = 2.1 to 5.5 V
4 1.8-V interface
4 LED supply = 1 to 20 mA with 40-mV dropout at 20 mA
412-bit adjustments of OFF time between 20 ms and 5.1
seconds
4 12-bit adjustments of ON time between 1 and 255 ms
4Options for training sequences: training, run once/
continuous, stop, reset, bypass mode
4Offloads CPU from blinking operation, extending battery
standby time by 30% in mobile applications
4 TSSOP, HVSON, CSP packages
VDD
CTRL
LEDOUT
PCA9901
ISET
GND
Rext
PCA9901 block diagram
LED ON
LED ON
Training
start
LED ON
LED OFF
Pattern 1
Pattern 2
Sequence
PCA9901 blinking patterns
LED OFF
Pattern 3
Training
end
NXP serial interface current sink LED drivers PCA9922 and PCA9926
Features
4 Ideal for LED billboards and bus signs
4 Supply = 2.3 to 5.5 V
4 25-MHz serial interface
4 8 channels supporting 15 to 60 mA at 5V
4Output error detection: LED open, LED short, pin shorted
to GND
4 DIP, TSSOP, HVQFN packages
VLED = 3 ~ 4 (V)
VDD
+
VCE
–
Scan
Enable
Vf
Clock
CPU
Out 0
Latch
Serial-in
R-ext
R
VO
Out 7
GND Serial-out
Enable
Clock
Out 0
Latch
Serial-in
R-ext
Out 7
GND Serial-out
The PCA9922 in a typical multi-device architecture
NXP I2C-bus interface voltage sources PCA953x and PCA955x
Features
4 SDA = 400 kHz and 3 mA
4 Supply = 2.3 to 5.5 V
4Open-drain output = 25 mA at 5 V with 100 mA max (200
mA max for 16-bit)
4256-step duty cycle and frequency adjustment on two
PWMs
4 Each output selects OFF, ON, PWM0 or PWM1
4 PCA953x Dimmer PWM = 160 Hz to 1.6 sec
4 PCA955x Blinker PWM = 40 Hz to 6.2 sec
4 SO, TSSOP, HVSON, HVQFN package
Dimmer
Blinker
Description
PCA9530
PCA9550
2-LED control
PCA9531
PCA9551
8-LED control
PCA9532
PCA9552
16-LED control
PCA9533
PCA9553
4-LED control
3.3 V
5V
10 kΩ
10 kΩ
10 kΩ
VDD
SDA
SDA
PWM
SCL
SCL
PWM
RESET
Typical application for LED controller
Color wheel
For standard IC packaging, visit www.standardics.nxp.com/packaging/
For package outlines, visit www.standardics.nxp.com/packaging/package.outlines/
For a list of sales offices and distributors near you, visit www.nxp.com/profile/sales/
www.nxp.com
© 2007 NXP B.V.
All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the
copyright owner. The information presented in this document does not form part of any quotation or contract,
is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the
publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent
or other industrial or intellectual property rights.
Date of release: October 2007
Document order number: 9397 750 16133
Printed in the USA