(Hong Kong)
Product Summary
The PCA9532PW is a 16-bit I2C-bus and SMBus I/O expander optimized for dimming LEDs in 256 discrete steps for Red/Green/Blue (RGB) color mixing and back light applications. The PCA9532PW contains an internal oscillator with two user programmable blink rates and duty cycles coupled to the output PWM. The LED brightness is controlled by setting the blink rate high enough (> 100 Hz) that the blinking cannot be seen and then using the duty cycle to vary the amount of time the LED is on and thus the average current through the LED.
Parametrics
PCA9532PW absolute maximum ratings: (1)VDD supply voltage: -0.5 to +6.0 V; (2)VI/O voltage on an input/output pin: VSS - 0.5 to 5.5 V; (3)IO(LEDn) output current on pin LEDn: ±25 mA; (4)ISS ground supply current: 200 mA; (5)Ptot total power dissipation: 400 mW; (6)Tstg storage temperature: -65 to +150 ℃; (7)Tamb ambient temperature operating: -40 to +85 ℃.
Features
PCA9532PW features: (1)16 LED drivers (on, off, flashing at a programmable rate); (2)Two selectable, fully programmable blink rates (frequency and duty cycle) between 0.591 Hz and 152 Hz (1.69 second and 6.58 milliseconds); (3)256 brightness steps; (4)Input/outputs not used as LED drivers can be used as regular GPIOs; (5)Internal oscillator requires no external components; (6)I2C-bus interface logic compatible with SMBus; (7)Internal power-on reset; (8)Noise filter on SCL/SDA inputs; (9)Active LOW reset input; (10)16 open-drain outputs directly drive LEDs to 25 mA; (11)Controlled edge rates to minimize ground bounce; (12)No glitch on power-up; (13)Supports hot insertion; (14)Low standby current.
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
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 PCA9532PW |
NXP Semiconductors |
LED Lighting Drivers I2C LED DIMMER 16BIT |
Data Sheet |
Negotiable |
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PCA9532PW,112 |
NXP Semiconductors |
LED Lighting Drivers I2C LED DIMMER 16BIT |
Data Sheet |
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PCA9532PW,118 |
NXP Semiconductors |
LED Lighting Drivers 16-BIT I2C FM OD LED DIM RST |
Data Sheet |
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