CA-DV8008N and CA-DV8008TB are I2C controlled eight-channel low-side drivers, with a simplified functional block diagram shown below. They enable serial-to-parallel control, significantly saving GPIO resources of the controller and reducing system costs.
CA-DV8008N and CA-DV8008TB support a sink current capability of 500mA per channel, with output port voltage ratings up to 50V. They feature built-in clamp diodes to handle inductive loads, making them suitable for driving loads such as stepper motors, DC motors, relays, and solenoids.
CA-DV8008N and CA-DV8008TB support a fast I2C bus with a maximum clock rate of 400kHz, and have three addressable pins (A2~A0), allowing up to 8 CA-DV8008 chips to be connected on the same bus. The SCL and SDA pins operate at CMOS logic levels, and the logic side power supply VCC supports a voltage range of 3V to 5.5V, allowing direct connection to 3.3V/5V controllers with a common power supply.
Features of CA-DV8008N and CA-DV8008TB:
• Eight-channel low-side output
▪ Single-channel 500mA sink current capability
▪ Output port voltage up to 50V
▪ Built-in clamp diodes for inductive load handling
• Input I2C control, supporting a maximum clock rate of 400kHz
• SCL/SDA pins at CMOS logic levels
• Three addressable pins, allowing up to 8 CA-DV8008 chips on the same bus
• VCC power supply voltage range: 3V~5.5V
• Operating temperature range: –40°C to 125°C
Typical Applications
CA-DV8008N is used for driving stepper motors.
CA-DV8008 can be used to drive 2 four-phase five-wire stepper motors. The logic side power supply VCC can share power with the microcontroller, supporting a voltage range of 3V to 5.5V. During use, SCL and SDA must be pulled up to VCC through resistors, and the device address can be set by shorting the A2~A0 pins to VCC or GND. The CA-DV8008 has built-in clamp diodes, which connect to the system high-voltage power supply to provide a current return path when turning off inductive loads.
CA-DV8008 is used for driving LED digital tubes in typical application circuits.
CA-DV8008 devices are available in SOIC16-NB and TSSOP16 package options, supporting an operating temperature range of –40°C to 125°C.
CA-DV8008N has an output port voltage rating of 50V, single-channel output current of 500mA, and is packaged in SOIC16-NB(N)
CA-DV8008TB has an output port voltage rating of 50V, single-channel output current of 500mA, and is packaged in TSSOP16(TB)