PCA9551D,118 NXP Semiconductors, PCA9551D,118 Datasheet - Page 11
![IC LED DRIVER BLINKER 16-SOIC](/photos/6/52/65286/16-soic_sot109-1_sml.jpg)
PCA9551D,118
Manufacturer Part Number
PCA9551D,118
Description
IC LED DRIVER BLINKER 16-SOIC
Manufacturer
NXP Semiconductors
Type
LED Blinkerr
Datasheet
1.PCA9551BS118.pdf
(26 pages)
Specifications of PCA9551D,118
Package / Case
16-SOIC (3.9mm Width)
Topology
Open Drain, PWM
Number Of Outputs
8
Internal Driver
Yes
Type - Primary
LED Blinker
Frequency
400kHz
Voltage - Supply
2.3 V ~ 5.5 V
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
25mA
Internal Switch(s)
Yes
Low Level Output Current
6.5 mA
Operating Supply Voltage
6 V
Maximum Power Dissipation
400 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
OM6285 - EVAL BOARD I2C-2002-1A568-4002 - DEMO BOARD I2C
Voltage - Output
-
Efficiency
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
935271695118
PCA9551D-T
PCA9551D-T
PCA9551D-T
PCA9551D-T
NXP Semiconductors
8. Application design-in information
PCA9551_8
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
2
C-BUS/SMBus
MASTER
I
is about 1.2 V less than V
5 V
LED0 to LED5 are used as LED drivers.
LED6 and LED7 are used as regular GPIOs.
the LED
shows a high value resistor in parallel with the LED.
V
DD
SDA
SCL
LEDn
DD
DD
DD
and is specified as I
and prevents additional supply current consumption when the LED is off.
10 k
when the I/Os are used to control LEDs
Figure
Rev. 08 — 31 July 2008
10 k
LED
14. Since the LED acts as a diode, when the LED is off the
10 k
8-bit I
002aac189
100 k
DD
SDA
SCL
RESET
A2
A1
A0
V
V
. The supply current, I
SS
DD
2
DD
C-bus LED driver with programmable blink rates
PCA9551
in
V
DD
Table 12 “Static
002aac510
LED0
LED1
LED2
LED3
LED4
LED5
LED6
LED7
Fig 16. Device supplied by a lower voltage
DD
characteristics”.
, increases as V
3.3 V
V
DD
LEDn
Figure 16
DD
5 V
when the LED is off.
PCA9551
5 V
002aac190
© NXP B.V. 2008. All rights reserved.
shows V
DD
LED
I
becomes
through a
DD
GPIOs
11 of 26
less
I