Overview
The CAT4016Y-T2 is a 16-channel constant current driver designed for LED billboard and various general display applications. This device, produced by onsemi, features a high-speed 4-wire serial interface with a clock frequency of up to 25 MHz, allowing for precise control over each individual channel using a shift register and latch configuration. The LED channel currents are programmed together via an external RSET resistor, enabling low output voltage operation as low as 0.4 V for LED currents ranging from 2 mA to 100 mA. This design enhances power efficiency and reduces heat dissipation. The device also includes thermal shutdown protection and a blanking control pin to disable all channels independently of the interface.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VDD Supply Voltage | - | - | 6 | V |
| Logic Input/Output Voltage (SIN, SOUT, CLK, BLANK, LATCH) | -0.3 | - | VDD+0.3 | V |
| LEDn Voltage, Channel Off | - | - | 6 | V |
| LEDn Voltage, Channel On | - | - | 2.5 | V |
| DC Output Current on LED1 to LED16 | - | - | 150 | mA |
| Storage Temperature Range | -55 | - | 160 | °C |
| Junction Temperature Range | -40 | - | 150 | °C |
| Lead Soldering Temperature (10 sec.) | - | - | 300 | °C |
| VDD Operating Voltage | 3.0 | - | 5.5 | V |
| LED Current Range | 2 | - | 100 | mA |
| LED Dropout Voltage at 30 mA | - | - | 300 mV | mV |
| Thermal Shutdown Temperature | - | - | 160 | °C |
| Package Type | - | - | TSSOP-24 | - |
Key Features
- 16 constant current-sink channels
- High-speed 4-wire serial interface up to 25 MHz clock frequency
- 3 V to 5.5 V logic supply voltage
- LED current range from 2 mA to 100 mA set by external RSET resistor
- Low output voltage operation as low as 0.4 V for LED channels
- 300 mV LED dropout at 30 mA
- Thermal shutdown protection
- Blanking control pin to disable all channels independently of the interface
- Available in 24-lead TSSOP and 4 x 4 mm TQFN packages
- AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements
- Pb-free, halogen-free/BFR-free, and RoHS compliant
Applications
- Billboard Display
- Marquee Display
- Instrument Display
- General Purpose Display
Q & A
- What is the CAT4016Y-T2 used for?
The CAT4016Y-T2 is used for driving LEDs in various display applications such as billboards, marquees, instrument displays, and general-purpose displays.
- How many channels does the CAT4016Y-T2 have?
The CAT4016Y-T2 has 16 constant current-sink channels.
- What is the clock frequency of the serial interface?
The serial interface operates at a clock frequency of up to 25 MHz.
- How is the LED current set in the CAT4016Y-T2?
The LED current is set by an external RSET resistor, with each channel current being 50 times the current pulled out of the RSET pin.
- What is the voltage range for the logic supply?
The logic supply voltage ranges from 3 V to 5.5 V.
- What is the thermal shutdown temperature of the CAT4016Y-T2?
The thermal shutdown temperature is 160°C.
- Can multiple CAT4016Y-T2 devices be cascaded?
Yes, multiple devices can be cascaded using the serial output data pin (SOUT) connected to the serial input pin (SIN) of the next device.
- What is the purpose of the BLANK pin?
The BLANK pin is used to enable or disable all LED channels independently of the serial interface.
- Is the CAT4016Y-T2 suitable for automotive applications?
Yes, the CAT4016Y-T2 is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other applications requiring unique site and control change requirements.
- Is the CAT4016Y-T2 RoHS compliant?
Yes, the CAT4016Y-T2 is Pb-free, halogen-free/BFR-free, and RoHS compliant.
