PCA9553D/01 NXP Semiconductors, PCA9553D/01 Datasheet - Page 11

• Manufacturer Part Number: PCA9553D/01
• Description: LED Drivers LED DRVR 4BIT I2C
• Manufacturer: NXP Semiconductors

Specifications of PCA9553D/01

• 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: SOT-96
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PCA9553D/01,112

NXP Semiconductors
9. Application design-in information
PCA9553_6
Product data sheet
Fig 14. Read input port register
Fig 15. Typical application
data into
read from
port
This figure assumes the command byte has previously been programmed with 00h.
PCA9553/01 shown.
SDA
port
S
START condition
9.1 Minimizing I
1
1
When the I/Os are used to control LEDs, they are normally connected to V
resistor as shown in
V
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 16
than the LED supply voltage by at least 1.2 V. Both of these methods maintain the I/O V
or above V
slave address
I
0
I
2
is about 1.2 V less than V
C-BUS/SMBus
MASTER
0
DD
5 V
0
and is specified as I
shows a high value resistor in parallel with the LED.
1
DD
SDA
SCL
0
t
and prevents additional supply current consumption when the LED is off.
h(D)
R/W
DD
1
10 k
when the I/Os are used to control LEDs
A
acknowledge
from slave
Figure
Rev. 06 — 29 December 2008
DATA 2
10 k
15. Since the LED acts as a diode, when the LED is off the I/O
data from port
DD
DATA 1
SDA
SCL
V
4-bit I
. The supply current, I
DATA 3
DD
SS
in
PCA9553
Table 13 “Static
V
2
DD
C-bus LED driver with programmable blink rates
t
LED0
LED1
LED2
su(D)
LED3
A
acknowledge
from master
DATA 4
characteristics”.
DD
data from port
5 V
, increases as V
DATA 4
002aad749
Figure 17
DD
when the LED is off.
PCA9553
NA
© NXP B.V. 2008. All rights reserved.
I
no acknowledge
from master
becomes lower
002aad748
shows V
P
DD
STOP
condition
through a
DD
11 of 26
less
I
at