900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




NXP Semiconductors Electronic Components Datasheet

PCU9655 Datasheet

16-channel UFm 5MHz bus 100mA 40V LED driver

No Preview Available !

PCU9655
16-channel UFm 5 MHz bus 100 mA 40 V LED driver
Rev. 2 — 2 October 2012
Product data sheet
1. General description
The PCU9655 is a UFm I2C-bus controlled 16-channel LED driver optimized for voltage
switch dimming and blinking 100 mA Red/Green/Blue/Amber (RGBA) LEDs. Each LED
output has its own 8-bit resolution (256 steps) fixed frequency individual PWM controller
that operates at approximately 31.25 kHz with a duty cycle that is adjustable from 0 % to
99.6 % to allow the LED to be set to a specific brightness value. An additional 8-bit
resolution (256 steps) group PWM controller has both a fixed frequency of about 122 Hz
and an adjustable frequency roughly between 15 Hz to once every 16.8 seconds with a
duty cycle that is adjustable from 0 % to 99.6 % that is used to either dim or blink all LEDs
with the same value.
Each LED output can be off, on (no PWM control), set at its individual PWM controller
value or at both individual and group PWM controller values. The PCU9655 operates with
a supply voltage range of 3 V to 5.5 V and the 100 mA open-drain outputs allow voltages
up to 40 V.
The PCU9655 is one of the first LED controller devices in a new Ultra Fast mode (UFm)
family. UFm devices offer higher frequency (up to 5 MHz).
Software programmable LED Group and three Sub Call I2C-bus addresses allow all or
defined groups of PCU9655 devices to respond to a common I2C-bus address, allowing
for example, all red LEDs to be turned on or off at the same time, thus minimizing I2C-bus
commands. On power-up, PCU9655 will have a unique Sub Call address to identify it as a
16-channel LED driver. This allows mixing of devices with different channel widths. Five
hardware address pins on PCU9655 allow up to 32 devices on the same bus.
The Software Reset (SWRST) function allows the master to perform a reset of the
PCU9655 through the I2C-bus, identical to the Power-On Reset (POR) that initializes the
registers to their default state causing the output voltage switches to be OFF (LED off).
This allows an easy and quick way to reconfigure all device registers to the same
condition.
Additionally, a thermal shutdown feature protects the device when the internal junction
temperature exceeds the overtemperature threshold.


NXP Semiconductors Electronic Components Datasheet

PCU9655 Datasheet

16-channel UFm 5MHz bus 100mA 40V LED driver

No Preview Available !

NXP Semiconductors
PCU9655
16-channel UFm 5 MHz bus 100 mA 40 V LED driver
2. Features and benefits
16 LED drivers. Each output programmable at:
Off
On
Programmable LED brightness
Programmable group dimming/blinking mixed with individual LED brightness
Programmable LED output enable delay to reduce EMI and surge currents
16 output channels can sink up to 100 mA, tolerate up to 40 V when OFF
5 MHz Ultra Fast-mode unidirectional interface (write only)
256-step (8-bit) linear programmable brightness per LED output varying from fully off
(default) to maximum brightness using a 31.25 kHz PWM signal
256-step group brightness control allows general dimming (using a 122 Hz PWM
signal) from fully off to maximum brightness (default)
256-step group blinking with frequency programmable from 15 Hz to 16.8 s and duty
cycle from 0 % to 99.6 %
Output state change programmable on the Acknowledge (this ninth bit is always set
to 1 by UFm I2C-bus master) or the STOP Command to update outputs byte-by-byte
or all at the same time (default to ‘Change on STOP’).
Five hardware address pins allow 32 PCU9655 devices to be connected to the same
UFM bus and to be individually programmed
Four software programmable I2C-bus addresses (one LED Group Call address and
three LED Sub Call addresses) allow groups of devices to be addressed at the same
time in any combination (for example, one register used for ‘All Call’ so that all the
PCU9655s on the UFm bus can be addressed at the same time and the second
register used for three different addresses so that 13 of all devices on the bus can be
addressed at the same time in a group). Software enable and disable for each
programmable UFm bus address.
Unique power-up default Sub Call address allows mixing of devices with different
channel widths
Software Reset feature (SWRST Call) allows the device to be reset through the
UFm bus
8 MHz internal oscillator requires no external components
Internal power-on reset
Noise filter on USDA/USCL inputs
Glitch free LED outputs on power-up
Thermal shutdown with thermal protection
Operating power supply voltage (VDD) range of 3 V to 5.5 V
5.5 V tolerant inputs on non-LED pins
40 C to +85 C operation
ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per
JESD22-C101
Latch-up testing is done to JEDEC Standard JESD78 Class II, Level B
Packages offered: TSSOP28
PCU9655
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 2 October 2012
© NXP B.V. 2012. All rights reserved.
2 of 37


Part Number PCU9655
Description 16-channel UFm 5MHz bus 100mA 40V LED driver
Maker NXP
PDF Download

PCU9655 Datasheet PDF






Similar Datasheet

1 PCU9654 8-bit UFm 5MHz I2C-bus 100mA 40V LED driver
NXP
2 PCU9655 16-channel UFm 5MHz bus 100mA 40V LED driver
NXP
3 PCU9656 24-bit UFm 5MHz I2C-bus 100mA 40V LED driver
NXP





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy