Overview
The PCA9952TW/Q900,118 is a 16-channel constant current LED driver manufactured by NXP USA Inc. This device is optimized for dimming and blinking LEDs in various applications, including amusement products and backlighting. It features an I2C-bus interface with Fast-mode Plus (Fm+) capability, allowing for higher frequency operation and denser bus populations. The PCA9952TW/Q900,118 is designed to operate with a supply voltage range of 3 V to 5.5 V and supports up to 40 V for the LED supply.
Key Specifications
| Attribute | Value |
|---|---|
| Supply Voltage | 3 V to 5.5 V |
| Output Voltage | 40 V |
| Switching Frequency-Max | 8 MHz |
| Package Style | HTSSOP-28 |
| Mounting Method | Surface Mount |
| Operating Temperature | -40°C to 85°C |
| Number of Outputs | 16 |
| Output Current per Channel | 57 mA (adjustable from 225 μA to 57 mA) |
| PWM Frequency | 31.25 kHz (individual), 122 Hz (group) |
| I2C-bus Interface | Fast-mode Plus (Fm+), up to 1 MHz |
Key Features
- 16-channel constant current LED driver with individual and group PWM control.
- 256-step (8-bit) linear programmable brightness per LED output.
- 256-step group brightness control and blinking with programmable frequency and duty cycle.
- Active LOW Output Enable (OE) pin for hardware blinking and dimming.
- Built-in open, short load, and overtemperature detection circuitry.
- Thermal shutdown feature for protection.
- Fast-mode Plus (Fm+) I2C-bus interface with up to 1 MHz frequency.
Applications
The PCA9952TW/Q900,118 is suitable for various applications, including:
- Backlighting systems.
- Amusement products such as gaming machines and arcade games.
- General LED lighting and display systems requiring dimming and blinking capabilities.
Q & A
- What is the supply voltage range of the PCA9952TW/Q900,118?
The supply voltage range is 3 V to 5.5 V. - How many output channels does the PCA9952TW/Q900,118 have?
The device has 16 output channels. - What is the maximum output voltage supported by the PCA9952TW/Q900,118?
The maximum output voltage is 40 V. - What type of I2C-bus interface does the PCA9952TW/Q900,118 use?
The device uses a Fast-mode Plus (Fm+) I2C-bus interface. - What is the maximum switching frequency of the PCA9952TW/Q900,118?
The maximum switching frequency is 8 MHz. - What is the package style of the PCA9952TW/Q900,118?
The package style is HTSSOP-28. - What is the mounting method for the PCA9952TW/Q900,118?
The mounting method is Surface Mount. - Does the PCA9952TW/Q900,118 have built-in protection features?
Yes, it has built-in open, short load, and overtemperature detection circuitry, as well as a thermal shutdown feature. - What is the operating temperature range of the PCA9952TW/Q900,118?
The operating temperature range is -40°C to 85°C. - How is the brightness of the LEDs controlled in the PCA9952TW/Q900,118?
The brightness is controlled using 256-step (8-bit) linear programmable PWM signals for both individual and group brightness control.
