PCA9533D/02,112 NXP Semiconductors, PCA9533D/02,112 Datasheet - Page 11

• Manufacturer Part Number: PCA9533D/02,112
• Description: IC LED DRIVER RGB 8-SOIC
• Manufacturer: NXP Semiconductors
• Type: RGB LED Driverr

Specifications of PCA9533D/02,112

• Topology: Open Drain, PWM
• Number Of Outputs: 4
• Internal Driver: Yes
• Type - Primary: Backlight, LED Blinker
• Type - Secondary: RGB
• Frequency: 400kHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 25mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 568-4003 - DEMO BOARD LED DIMMER568-3512 - DEMO BOARD UART TO I2C
• Voltage - Output: -
• Efficiency: -
• Lead Free Status / Rohs Status: Details
• Other names: 568-3373-5; 935274436112; PCA9533D/02

NXP Semiconductors
8. Application design-in information
PCA9533_3
Product data sheet
8.1 Minimizing I
When the I/Os are used to control LEDs, they are normally connected to V
resistor as shown in
I/O V
lower than V
Designs needing to minimize current consumption, such as battery power applications,
should consider maintaining the I/O pins greater than or equal to V
Figure 15
than the LED supply voltage by at least 1.2 V. Both of these methods maintain the I/O V
at or above V
Fig 14. Typical application
Fig 15. High value resistor in parallel with
I
is about 1.2 V less than V
the LED
shows a high value resistor in parallel with the LED.
V
DD
LEDn
DD
DD
I
2
DD
and is specified as I
C-BUS/SMBus
and prevents additional supply current consumption when the LED is off.
MASTER
when the I/Os are used to control LEDs
5 V
Figure
Rev. 03 — 27 April 2009
SDA
SCL
LED
14. Since the LED acts as a diode, when the LED is off the
10 k
002aac189
100 k
DD
. The supply current, I
V
DD
DD
10 k
in
Table 13 “Static
SDA
SCL
V
SS
PCA9533
Fig 16. Device supplied by a lower voltage
V
DD
LED0
LED1
LED2
LED3
DD
characteristics”.
, increases as V
3.3 V
V
DD
LEDn
4-bit I
Figure 16
5 V
DD
2
002aae632
when the LED is off.
C-bus LED dimmer
PCA9533
5 V
002aac190
© NXP B.V. 2009. All rights reserved.
shows V
DD
I
LED
becomes
through a
DD
11 of 24
less
I