PCA9533D/01-T NXP Semiconductors, PCA9533D/01-T Datasheet - Page 11

• Manufacturer Part Number: PCA9533D/01-T
• Description: LED Drivers 4-BIT I2C FM OD LED DIM
• Manufacturer: NXP Semiconductors

Specifications of PCA9533D/01-T

• Number Of Segments: 4
• Low Level Output Current: 25000 uA (Min)
• Operating Supply Voltage: 2.3 V to 5.5 V
• Maximum Supply Current: 500 uA
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SO
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PCA9533D/01,118

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