PCA9622

更新时间： 2024-11-12 10:17:03

品牌	Logo	应用领域
恩智浦 - NXP		驱动器
页数	文件大小	规格书
39页	214K
描述
16-bit Fm+ I2C-bus 100 mA 40 V LED driver

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PCA9622 数据手册

PCA9622

16-bit Fm+ I²C-bus 100 mA 40 V LED driver

Rev. 03 — 31 August 2009

Product data sheet

1. General description

The PCA9622 is an I²C-bus controlled 16-bit 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 97 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 190 Hz and an adjustable frequency

between 24 Hz to once every 10.73 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 PCA9622 operates with

a supply voltage range of 2.3 V to 5.5 V and the 100 mA open-drain outputs allow

voltages up to 40 V.

The PCA9622 is one of the ﬁrst LED controller devices in a new Fast-mode Plus (Fm+)

family. Fm+ devices offer higher frequency (up to 1 MHz) and more densely populated bus

operation (up to 4000 pF).

The active LOW Output Enable input pin (OE) blinks all the LED outputs and can be used

to externally PWM the outputs, which is useful when multiple devices need to be dimmed

or blinked together without using software control.

Software programmable LED Group and three Sub Call I²C-bus addresses allow all or

deﬁned groups of PCA9622 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 or marquee chasing

effect, thus minimizing I²C-bus commands. Seven hardware address pins allow up to

126 devices on the same bus.

The Software Reset (SWRST) Call allows the master to perform a reset of the PCA9622

through the I²C-bus, identical to the Power-On Reset (POR) that initializes the registers to

their default state causing the outputs to be set HIGH (LED off). This allows an easy and

quick way to reconﬁgure all device registers to the same condition.

The PCA9622, PCA9625 and PCA9635 software is identical and if the PCA9622 on-chip

100 mA NAND FETs do not provide enough current or voltage to drive the LEDs, then the

PCA9635 with larger current or higher voltage external drivers can be used.

12 3 4 5 6 7...39

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与PCA9622相关器件

型号	品牌	获取价格	描述	数据表
PCA9622_12	NXP	获取价格	16-bit Fm I2C-bus 100 mA 40 V LED driver
PCA9622BS	NXP	获取价格	16-bit Fm+ I2C-bus 100 mA 40 V LED driver
PCA9622BS,118	NXP	获取价格	暂无描述
PCA9622DR	NXP	获取价格	16-bit Fm+ I2C-bus 100 mA 40 V LED driver
PCA9622DR,118	NXP	获取价格	PCA9622 - 16-bit Fm+ I²C-bus 100 mA 40 V LED
PCA9624	NXP	获取价格	8-bit Fm+ I2C-bus 100 mA 40 V LED driver
PCA9624BS	NXP	获取价格	8-bit Fm+ I2C-bus 100 mA 40 V LED driver
PCA9624BS,118	NXP	获取价格	PCA9624 - 8-bit Fm+ I²C-bus 100 mA 40 V LED d
PCA9624PW	NXP	获取价格	8-bit Fm+ I2C-bus 100 mA 40 V LED driver
PCA9624PW,118	NXP	获取价格	PCA9624 - 8-bit Fm+ I²C-bus 100 mA 40 V LED d

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