Overview
The PCA9552D,112 is a 16-bit I²C-bus LED driver with programmable blink rates, manufactured by NXP USA Inc. This component is designed to blink LEDs in I²C-bus and SMBus applications, helping to limit bus traffic or free up the I²C-bus controller's resources. It is particularly useful in scenarios where LED control needs to be automated without constant intervention from the microcontroller.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SO24 (plastic small outline package; 24 leads; body width 7.5 mm) |
| Output Current per Bit | 25 mA |
| Total Package Current | 200 mA |
| Operating Voltage Range | 2.3 V to 5.5 V |
| I²C-bus Clock Frequency | 0 Hz to 400 kHz |
| Blink Rates | 2 selectable, fully programmable rates (frequency and duty cycle) between 0.172 Hz and 44 Hz |
| ESD Protection | Exceeds 2000 V HBM per JESD22-A114, 150 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101 |
| Address Pins | Three hardware address pins allowing eight devices to operate on the same bus |
| Reset | Active LOW hardware reset pin and Power-On Reset (POR) |
Key Features
- 16 LED drivers with programmable on, off, and flashing modes at two selectable blink rates
- 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 and edge rate control on outputs
- No glitch on power-up and supports hot insertion
- Low standby current
Applications
The PCA9552D,112 is suitable for various applications where LED control is necessary, such as in automotive lighting systems, industrial control panels, consumer electronics, and any system requiring automated LED management without constant microcontroller intervention. It is particularly useful in scenarios where reducing bus traffic and freeing up the I²C-bus controller are crucial.
Q & A
- What is the PCA9552D,112 used for?
The PCA9552D,112 is used to blink LEDs 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 PCA9552D,112 have?
The PCA9552D,112 has 16 LED drivers. - What are the programmable blink rates of the PCA9552D,112?
The PCA9552D,112 has two selectable, fully programmable blink rates between 0.172 Hz and 44 Hz. - What is the maximum output current per bit of the PCA9552D,112?
The maximum output current per bit is 25 mA. - What is the total package current of the PCA9552D,112?
The total package current is 200 mA. - What is the operating voltage range of the PCA9552D,112?
The operating voltage range is from 2.3 V to 5.5 V. - Does the PCA9552D,112 support hot insertion?
Yes, the PCA9552D,112 supports hot insertion. - What type of reset does the PCA9552D,112 have?
The PCA9552D,112 has an active LOW hardware reset pin and a Power-On Reset (POR). - How many devices can operate on the same bus using the PCA9552D,112?
Eight devices can operate on the same bus using the three hardware address pins. - What is the ESD protection level of the PCA9552D,112?
The ESD protection exceeds 2000 V HBM per JESD22-A114, 150 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101.
