Overview
The PCA9552PW112, produced by NXP USA Inc., is a 16-bit I²C-bus LED driver designed to manage LED blinking in various applications. This component is particularly useful in scenarios where it is necessary to limit bus traffic or free up the I²C-bus controller's resources. The PCA9552PW112 integrates 16 LED drivers, each capable of being set to on, off, or flashing at programmable rates, making it versatile for different lighting requirements.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Number of LED Drivers | 16 | 16 |
| Blink Rates | 2 selectable, fully programmable blink rates | Between 0.172 Hz and 44 Hz |
| Output Sink Current | Per bit and per package | 25 mA per bit, 200 mA per package |
| I²C-bus Interface | Compatibility | Standard mode and Fast mode I²C-bus, compatible with SMBus |
| Hardware Address Pins | Allow multiple devices on the same bus | 3 pins, allowing 8 devices |
| Reset | Active LOW hardware reset pin and Power-On Reset (POR) | Initializes registers to default state |
| Package | Type and Pin Count | TSSOP24 |
Key Features
- 16 LED drivers with programmable on, off, and blinking states
- 2 selectable, fully programmable blink rates (frequency and duty cycle) between 0.172 Hz and 44 Hz
- Input/outputs not used as LED drivers can be used as regular GPIOs
- Internal oscillator requires no external components
- I²C-bus interface logic compatible with SMBus
- Internal power-on reset and noise filter on SCL/SDA inputs
- Active LOW reset input
- Pulse-width modulation (PWM) capability for LED outputs
Applications
- I²C-bus and SMBus applications where bus traffic needs to be minimized
- LED lighting systems in various industries, including automotive, consumer electronics, and industrial automation
- Battery-powered devices where current consumption needs to be optimized
- General-purpose parallel input/output (GPIO) expansion in embedded systems
Q & A
- What is the PCA9552PW112 used for?
The PCA9552PW112 is used to manage LED blinking in I²C-bus and SMBus applications, helping to limit bus traffic or free up the I²C-bus controller's resources.
- How many LED drivers does the PCA9552PW112 have?
The PCA9552PW112 has 16 LED drivers.
- What are the programmable blink rates of the PCA9552PW112?
The PCA9552PW112 has 2 selectable, fully programmable blink rates between 0.172 Hz and 44 Hz.
- What is the maximum output sink current per bit and per package?
The maximum output sink current is 25 mA per bit and 200 mA per package.
- Is the PCA9552PW112 compatible with SMBus?
Yes, the PCA9552PW112 is compatible with SMBus and supports both Standard mode and Fast mode I²C-bus.
- How many devices can operate on the same bus using the PCA9552PW112?
Up to 8 devices can operate on the same bus due to the 3 hardware address pins.
- What type of reset does the PCA9552PW112 have?
The PCA9552PW112 has an active LOW hardware reset pin and a Power-On Reset (POR).
- Can unused LED drivers be used as GPIOs?
Yes, input/outputs not used as LED drivers can be used as regular GPIOs.
- Does the PCA9552PW112 require external components for its internal oscillator?
No, the internal oscillator of the PCA9552PW112 requires no external components.
- What is the package type of the PCA9552PW112?
The PCA9552PW112 comes in a TSSOP24 package.
