Overview
The PCA9552BS,118 is a 16-bit I²C-bus LED driver with programmable blink rates, manufactured by NXP USA Inc. This device is designed to manage LED blinking in I²C-bus and SMBus applications, reducing the need for repeated commands from the bus controller and thus minimizing bus traffic. It features an internal oscillator that allows for two fully programmable blink rates, making it ideal for applications where LED control needs to be efficient and independent of the main controller's resources.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | HVQFN24 |
| Number of LED Drivers | 16 |
| Blink Rates | 2 selectable, programmable rates (frequency and duty cycle) between 0.172 Hz and 44 Hz |
| Output Sink Current | 25 mA per bit, 200 mA per package |
| Operating Voltage | 2.3 V to 5.5 V |
| Clock Frequency | 0 Hz to 400 kHz |
| ESD Protection | Exceeds 2000 V HBM, 150 V MM, 1000 V CDM |
| Reset | Active LOW hardware reset pin and Power-On Reset (POR) |
| Addressing | Three hardware address pins allowing eight devices on the same bus |
Key Features
- 16 LED drivers with programmable on, off, and blinking states
- Internal oscillator requiring no external components
- I²C-bus interface logic compatible with SMBus
- Input/outputs not used as LED drivers can be used as regular GPIOs
- No glitch on power-up and supports hot insertion
- Low standby current
- Edge rate control on outputs
- Noise filter on SCL/SDA inputs
Applications
The PCA9552BS,118 is suitable for various applications where efficient LED control is necessary, such as in automotive systems, industrial control panels, consumer electronics, and any system requiring I²C-bus or SMBus communication. It is particularly useful in scenarios where minimizing bus traffic and freeing up the main controller's resources are critical.
Q & A
- What is the primary function of the PCA9552BS,118? The primary function is to manage LED blinking in I²C-bus and SMBus applications with programmable blink rates.
- How many LED drivers does the PCA9552BS,118 have? It has 16 LED drivers.
- What is the range of programmable blink rates? The blink rates are programmable between 0.172 Hz and 44 Hz.
- What is the maximum output sink current per bit? The maximum output sink current per bit is 25 mA.
- What is the operating voltage range of the PCA9552BS,118? The operating voltage range is from 2.3 V to 5.5 V.
- Does the PCA9552BS,118 support hot insertion? Yes, it supports hot insertion.
- How many devices can operate on the same bus using the PCA9552BS,118? Up to eight devices can operate on the same bus.
- What type of reset does the PCA9552BS,118 have? It has an active LOW hardware reset pin and a Power-On Reset (POR).
- Is the PCA9552BS,118 protected against ESD? Yes, it exceeds 2000 V HBM, 150 V MM, and 1000 V CDM ESD protection.
- Can unused outputs be used as GPIOs? Yes, any bits not used for controlling LEDs can be used for General Purpose Parallel Input/Output (GPIO) expansion.
