PCA9634D,118 NXP Semiconductors, PCA9634D,118 Datasheet - Page 25
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PCA9634D,118
Manufacturer Part Number
PCA9634D,118
Description
IC LED DRIVER RGBA 20-SOIC
Manufacturer
NXP Semiconductors
Type
RGBA LED Driverr
Datasheet
1.PCA9634D118.pdf
(38 pages)
Specifications of PCA9634D,118
Topology
Open Drain, PWM
Number Of Outputs
8
Internal Driver
Yes
Type - Primary
Backlight, LED Blinker
Type - Secondary
RGBA
Frequency
1MHz
Voltage - Supply
2.3 V ~ 5.5 V
Voltage - Output
5.5V
Mounting Type
Surface Mount
Package / Case
20-SOIC (7.5mm Width)
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
25mA
Internal Switch(s)
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Efficiency
-
Lead Free Status / Rohs Status
Details
Other names
568-4065-2
935282232118
PCA9634D-T
PCA9634D-T
935282232118
PCA9634D-T
PCA9634D-T
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PCA9634D,118
Manufacturer:
NXP/恩智浦
Quantity:
20 000
NXP Semiconductors
11. Limiting values
PCA9634_6
Product data sheet
Question 3: Can I really sink 400 mA through the single ground pin on the package and
will this cause any ground bounce problem due to the PWM of the LEDs?
Question 4: I can’t turn the LEDs on or off, but their registers are set properly. Why?
Question 5: I’m using LEDs with integrated Zener diodes and the IC is getting very hot.
Why?
Table 16.
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
V
V
I
I
P
T
T
O(LEDn)
SS
•
•
•
stg
amb
DD
I/O
tot
Yes, you can sink 400 mA through a single ground pin on the package. Although the
package only has one ground pin, there are two ground pads on the die itself
connected to this one pin. Although some ground bounce is likely, it will not disrupt the
operation of the part and would be reduced by the external decoupling capacitance.
Check the Mode Register 1 bit 4 SLEEP setting. The value needs to be 0 so that the
OSC is turn on. If the OSC is turned off, the LEDs cannot be turned on or off and also
can’t be dimmed or blinked.
The IC outputs can be set to either open-drain or push-pull and default to push-pull
outputs. In this application with the Zener diodes, they need to be set to open-drain
since in the push-pull architecture there is a low resistance path to ground through the
Zener and this is causing the IC to overheat. The PCA9632/33/34/35 ICs all power-up
in the push-pull output mode and with the logic state HIGH, so one of the first things
that need to be done is to set the outputs to open-drain.
Parameter
supply voltage
voltage on an input/output pin
output current on pin LEDn
ground supply current
total power dissipation
storage temperature
ambient temperature
Limiting values
Rev. 06 — 12 September 2008
Conditions
operating
8-bit Fm+ I
Min
V
-
-
-
0.5
65
40
SS
0.5
PCA9634
2
© NXP B.V. 2008. All rights reserved.
C-bus LED driver
Max
+6.0
5.5
25
200
400
+150
+85
25 of 38
Unit
V
V
mA
mA
mW
C
C