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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