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PCA9632: Description4-bit Fm+ I2C-bus low power LED driver; File Size148KB，32 Pages; ManufacturerNXP; Websitehttps://www.nxp.com

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PCA9632 Overview

4-bit Fm+ I2C-bus low power LED driver

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PCA9632

4-bit Fm+ I

C-bus low power LED driver

Rev. 01 — 28 September 2007

Objective data sheet

1. General description

The PCA9632 is an I

C-bus controlled 4-bit LED driver optimized for

Red/Green/Blue/Amber (RGBA) color mixing applications. The PCA9632 is a drop-in

upgrade for the PCA9633 with 40× power reduction. In individual brightness control mode,

each LED output has its own 8-bit resolution (256 steps) ﬁxed frequency Individual PWM

controller that operates at 1.5625 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. In group dimming mode,

each LED output has its own 6-bit resolution (64 steps) ﬁxed frequency Individual PWM

controller that operates at 6.25 kHz with a duty cycle that is adjustable from 0 % to 98.4 %

to allow the LED to be set to a speciﬁc brightness value. A ﬁfth 4-bit resolution (16 steps)

Group PWM controller has a ﬁxed frequency of 190 Hz that is used to dim all the LEDs

with the same value.

While operating in the Blink mode, each LED output has its own 8-bit resolution

(256 steps) ﬁxed frequency individual PWM controller that operates at 1.5625 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. Blink rate is controlled by the Group Frequency setting that has 8-bit

resolution (256 steps). The blink rate is adjustable between 24 Hz to once every

10.73 seconds. For Group Frequency settings between 6 Hz and 24 Hz, the Group PWM

has a 6-bit resolution (64 steps) with a duty cycle that is adjustable from 0 % to 98.4 %.

For Group frequency settings between 6 Hz to 0.09 Hz (once in 10.73 seconds), the

Group PWM has an 8-bit resolution (256 steps) with a duty cycle that is adjustable from

0 % to 99.6 %.

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 LED output driver is

programmed to be either open-drain with a 25 mA current sink capability at 5 V or

totem-pole with a 25 mA sink, 10 mA source capability at 5 V. The PCA9632 operates with

a supply voltage range of 2.3 V to 5.5 V and the outputs are 5.5 V tolerant. LEDs can be

directly connected to the LED output (up to 25 mA, 5.5 V) or controlled with external

drivers and a minimum amount of discrete components for larger current or higher voltage

LEDs.

The PCA9632 is in the 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).

Software programmable LED Group and three Sub Call I

C addresses allow all or deﬁned

groups of PCA9632 devices to respond to a common I

C-bus address, allowing for

example, all red LEDs to be turned on or off at the same time or marquee chasing effect,

thus minimizing I

C-bus commands.

PCA9632 Related Products

	PCA9632	PCA9632DP1	PCA9632TK
Description	4-bit Fm+ I2C-bus low power LED driver	4-bit Fm+ I2C-bus low power LED driver	4-bit Fm+ I2C-bus low power LED driver
Is it lead-free?	-	Lead free	Lead free
Is it Rohs certified?	-	conform to	conform to
Maker	-	NXP	NXP
Parts packaging code	-	SOIC	SON
package instruction	-	TSSOP, TSSOP8,.19	HVSON, SOLCC8,.11,20
Contacts	-	8	8
Reach Compliance Code	-	compli	compli
ECCN code	-	EAR99	EAR99
data entry mode	-	SERIAL	SERIAL
Interface integrated circuit type	-	LED DISPLAY DRIVER	LED DISPLAY DRIVER
JESD-30 code	-	S-PDSO-G8	S-PDSO-N8
JESD-609 code	-	e4	e4
length	-	3 mm	3 mm
Humidity sensitivity level	-	1	1
Multiplex display function	-	NO	NO
Number of functions	-	1	1
Number of segments	-	4	4
Number of terminals	-	8	8
Maximum operating temperature	-	85 °C	85 °C
Minimum operating temperature	-	-40 °C	-40 °C
Package body material	-	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	TSSOP	HVSON
Encapsulate equivalent code	-	TSSOP8,.19	SOLCC8,.11,20
Package shape	-	SQUARE	SQUARE
Package form	-	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	-	260	260
power supply	-	2.5/5 V	2.5/5 V
Certification status	-	Not Qualified	Not Qualified
Maximum seat height	-	1.1 mm	1 mm
Maximum supply voltage	-	5.5 V	5.5 V
Minimum supply voltage	-	2.3 V	2.3 V
Nominal supply voltage	-	3.3 V	3.3 V
surface mount	-	YES	YES
Temperature level	-	INDUSTRIAL	INDUSTRIAL
Terminal surface	-	Nickel/Palladium/Gold (Ni/Pd/Au)	NICKEL PALLADIUM GOLD
Terminal form	-	GULL WING	NO LEAD
Terminal pitch	-	0.65 mm	0.5 mm
Terminal location	-	DUAL	DUAL
Maximum time at peak reflow temperature	-	30	30
width	-	3 mm	3 mm
minfmax	-	1 MHz	1 MHz

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