PCA9634PW NXP Semiconductors, PCA9634PW Datasheet - Page 19
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PCA9634PW
Manufacturer Part Number
PCA9634PW
Description
IC, LED DRIVER, RGBA, 20-TSSOP
Manufacturer
NXP Semiconductors
Datasheet
1.PCA9634D112.pdf
(38 pages)
Specifications of PCA9634PW
No. Of Outputs
8
Output Current
25mA
Output Voltage
5.5V
Input Voltage
2.3V To 5.5V
Dimming Control Type
PWM
Driver Case Style
TSSOP
Switching Frequency
1MHz
Base Number
9634
Operating
RoHS Compliant
Number Of Segments
16
Low Level Output Current
200 mA
High Level Output Current
50 uA
Operating Supply Voltage
2.3 V to 5.5 V
Maximum Supply Current
10 mA
Maximum Power Dissipation
400 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
TSSOP-20
Minimum Operating Temperature
- 40 C
Led Driver Application
RGB Or RGBA LED Drivers, LED Status Information, Displays, Backlights
Rohs Compliant
Yes
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PCA9634PW
Manufacturer:
TRINAMIC
Quantity:
1 200
Company:
Part Number:
PCA9634PW
Manufacturer:
NXP Semiconductors
Quantity:
26 963
Part Number:
PCA9634PW
Manufacturer:
NXP/恩智浦
Quantity:
20 000
NXP Semiconductors
PCA9634_6
Product data sheet
Fig 8.
1
1
Brightness Control signal (LEDn)
Group Dimming signal
resulting Brightness + Group Dimming signal
2
2
(GRPPWM Register)
M
Minimum pulse width for LEDn Brightness Control is 40 ns.
Minimum pulse width for Group Dimming is 20.48 s.
When M = 1 (GRPPWM register value), the resulting LEDn Brightness Control + Group Dimming signal will have 2 pulses of
the LED Brightness Control signal (pulse width = N
This resulting Brightness + Group Dimming signal above shows a resulting Control signal with M = 4 (8 pulses).
Brightness + Group Dimming signals
with M = (0 to 255)
3
3
256
4
4
7.8 Individual brightness control with group dimming/blinking
2
5
5
40 ns
6
6
A 97 kHz fixed frequency signal with programmable duty cycle (8 bits, 256 steps) is used
to control individually the brightness for each LED.
On top of this signal, one of the following signals can be superimposed (this signal can be
applied to the 4 LED outputs):
7
7
•
•
256
8
8
A lower 190 Hz fixed frequency signal with programmable duty cycle (8 bits,
256 steps) is used to provide a global brightness control.
A programmable frequency signal from 24 Hz to
programmable duty cycle (8 bits, 256 steps) is used to provide a global blinking
control.
9 10 11 12
2
256
40 ns = 5.24 ms (190.7 Hz)
Rev. 06 — 12 September 2008
256
(97.6 kHz)
40 ns = 10.24 s
40 ns, with ‘N’ defined in PWMx register).
N
with N = (0 to 255)
(PWMx Register)
40 ns
507
508
509
510
511
512
1
10.73
1
1
2
2
8-bit Fm+ I
Hz (8 bits, 256 steps) with
3
3
4
4
5
5
6
6
PCA9634
2
© NXP B.V. 2008. All rights reserved.
C-bus LED driver
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7
8
8
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