LED Controllers Selection Guide
Device
Function
Number of LED Outputs
Operating Voltage Range
Standby Current [1]
Type of LED Drive
Max LED Drive Current
Max LED Drive Voltage
Output Type
Default POR LED Output State
LED Pin can be used as Input
Number of PWMs
Individual PWM Resolution (Steps)
Group PWM Resolution (Steps)
Individual Brightness Control
Group Brightness Control
Output Enable / PWM Control
Programmable Output Delay
Dimming Capability
Blinking Capability
Pattern Sequencer
LED Error Detection
Thermal Shutdown
Interface
Number of Device Addresses
Hardware Reset
Internal Oscillator Frequency
Oscillator Calibration
External Oscillator Input
Individual PWM Frequency
Group PWM Frequency
Status
PCA9550 Blinker 2 2.3 V -
5.5 V 1.9 mA Voltage
switch 25 mA 5 V Open Drain Hi-Z Input Y 2 256 - Y N N N N Y N N N I2C, Fm 2 Y 330 KHz - - 0.172 Hz -
44 Hz - In Production
PCA9553 Blinker 4 2.3 V -
5.5 V 1.9 mA Voltage
switch 25 mA 5 V Open Drain Hi-Z Input Y 2 256 - N N N N N Y N N N I2C, Fm 1 N 330 KHz - - 0.172 Hz -
44 Hz - In Production
PCA9551 Blinker 8 2.3 V -
5.5 V 1.9 mA Voltage
switch 25 mA 5 V Open Drain Hi-Z Input Y 2 256 - N N N N N Y N N N I2C, Fm 8 Y 330 KHz - - 0.172 Hz -
44 Hz - In Production
PCA9552 Blinker 16 2.3 V -
5.5 V 2,1 mA Voltage
switch 25 mA 5 V Open Drain Hi-Z Input Y 2 256 - N N N N N Y N N N I2C, Fm 8 Y 330 KHz - - 0.172 Hz -
44 Hz - In Production
PCA9530 Dimmer &
Blinker 22.3 V -
5.5 V 1.9 mA Voltage
switch 25 mA 5 V Open Drain Hi-Z Input Y 2 256 - Y N N N Y Y N N N I2C, Fm 2 Y 330 KHz - - 0.591 Hz -
152 Hz - In Production
PCA9533 Dimmer &
Blinker 42.3 V -
5.5 V 1.9 mA Voltage
switch 25 mA 5 V Open Drain Hi-Z Input Y 2 256 - N N N N Y Y N N N I2C, Fm 2 N 330 KHz - - 0.591 Hz -
152 Hz - In Production
PCA9531 Dimmer &
Blinker 82.3 V -
5.5 V 1.9 mA Voltage
switch 25 mA 5 V Open Drain Hi-Z Input Y 2 256 - N N N N Y Y N N N I2C, Fm 8 Y 330 KHz - - 0.591 Hz -
152 Hz - In Production
PCA9532 Dimmer &
Blinker 16 2.3 V -
5.5 V 2,1 mA Voltage
switch 25 mA 5 V Open Drain Hi-Z Input Y 2 256 - N N N N Y Y N N N I2C, Fm 8 Y 330 KHz - - 0.591 Hz -
152 Hz - In Production
PCA9632 Dimmer &
Blinker 42.3 V -
5.5 V
0,005
mA
Voltage
switch
-10 mA
25 mA 5 V Push Pull
(Congurable) Hi-Z N 4 + 1 256
(64)
64
(16) Y Y N N Y Y N N N I2C, Fm+ 1, 4 N 400 KHz N N 1.56 KHz 190 Hz
(6.25 KHz) In Production
PCA9633 Dimmer &
Blinker 42.3 V -
5.5 V 3,8 mA Voltage
switch
-10 mA
25 mA 5 V Push Pull
(Congurable)
Push Pull
Logic H N 4 + 1 256 256 Y Y Y N Y Y N N N I2C, Fm+ 1, 4,
126 N 25 MHz N N 97 KHz 190 Hz
(97 KHz) In Production
PCA9634 Dimmer &
Blinker 82.3 V -
5.5 V 3,8 mA Voltage
switch
-10 mA
25 mA 5 V Push Pull
(Congurable)
Push Pull
Logic H N 8 + 1 256 256 Y Y Y N Y Y N N N I2C, Fm+ 1, 4,
126 N 25 MHz N N 97 KHz 190 Hz
(97 KHz) In Production
PCA9635 Dimmer &
Blinker 16 2.3 V -
5.5 V 3,8 mA Voltage
switch
-10 mA
25 mA 5 V Push Pull
(Congurable)
Push Pull
Logic H N 16 + 1 256 256 Y Y Y N Y Y N N N I2C, Fm+ 126 N 25 MHz N N 97 KHz 190 Hz
(97 KHz) In Production
PCA9685 Dimmer 16 2.3 V -
5.5 V 2,2 mA Voltage
switch
-10 mA
25 mA 5 V Push Pull
(Congurable)
Push Pull
Logic L N 16 4096 - Y N Y Y Y Y N N N I2C, Fm+ 126 N 25 MHz N Y 40 Hz -
1000 Hz - In Production
PCA9624 Dimmer &
Blinker 82.3 V -
5.5 V 2,1 mA Voltage
switch 100 mA 40 V Open Drain Hi-Z N 8 + 1 256 256 Y Y Y N Y Y N N N I2C, Fm+ 126 N 25 MHz N N 97 KHz 190 Hz
(97 KHz) In Production
PCA9622 Dimmer &
Blinker 16 2.3 V -
5.5 V 1.05 mA Voltage
switch 100 mA 40 V Open Drain Hi-Z N 16 + 1 256 256 Y Y Y N Y Y N N N I2C, Fm+ 126 N 25 MHz N N 97 KHz 190 Hz
(97 KHz) In Production
PCA9626 Dimmer &
Blinker 24 2.3 V -
5.5 V 6.0 mA Voltage
switch 100 mA 40 V Open Drain Hi-Z N 24 + 1 256 256 Y Y Y N Y Y N N N I2C, Fm+ 126 N 25 MHz N N 97 KHz 190 Hz
(97 KHz) In Production
PCA9901 Blinker 1 2.1 V -
5.5 V 0,3 mA
Constant
Current
(Source)
1 to 20
mA 5 V Open Drain
(Source) Hi-Z N 0 4096 - N N N N N Y Y Y Y 1-Wire 1 N 18 KHz N N N N In Production
PCA9922 Signage 8 3.3 V -
5.5 V 3.2 mA Constant
Current
15 to 60
mA 5 V Open Drain
(Sink) Hi-Z N 0 - - N N Y N N N N Y Y SPI, 25
MHz - N - - - N N In Production
PCA9952 Dimmer &
Blinker 16 3.0 V -
5.5 V 500 mA Constant
Current 50 mA 34 V Open Drain
(Sink) Hi-Z N 16 + 1 256 256 Y Y Y Y Y Y N Y Y I2C, Fm+ 8, 4 Y 8 MHz Y N 31.5 KHz 122 Hz In Development
PCA9955 Dimmer &
Blinker 16 3.0 V -
5.5 V 500 mA Constant
Current 50 mA 34 V Open Drain
(Sink) Hi-Z N 16 + 1 256 256 Y Y N Y Y Y N Y Y I2C, Fm+ 16, 4 Y 8 MHz Y N 31.5 KHz 122 Hz In Development
[1] Typical value, measured with VDD = 5.5 V, no load, VI = VDD or VSS, and FSCL = 0 KHz.
LED Flash Drivers Selection Guide
Device
Function
Operating Voltage Range
Flash LED Output Drive Type
Flash LEDs Driven in Series
Maximum LED Drive Current
Fixed Switching Frequency
Integrated Diodes and Resistors
Inductor Broken Coil Detect
Interface Type
Number of Device Addresses
Max Timed Flash Operation
Assist Light
Status
Flash (1 LED)
Flash (2 LEDs)
Touch Indicator
Output
SSL3250A Asynchronous
boost conerter 2.7 V - 5.5 V Low-side drive 1 or 2 500 mA 500 mA 200 mA 20 mA 1.2 MHz N N I2C, Fm or direct 1 820 ms N In
Production
SSL3252 Synchronous
boost converter 2.5 V - 5.5 V High-side drive 1 or 2 500 mA 400 mA 160 mA 10 mA 2.0 MHz Y Y I2C, Fm or direct 1 820 ms Y In
Development