Overview
The TPIC6B595DW is a monolithic, high-voltage, medium-current power logic 8-bit shift register designed by Texas Instruments. This device is optimized for systems that require high current and voltage handling capabilities. It operates within a supply voltage range of 4.5 V to 5.5 V and is well-suited for applications needing serial-to-parallel data conversion and high current sink capabilities.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 4.5 to 5.5 | V |
| Operating Temperature | -40 to 125 | °C |
| Number of Bits | 8 | |
| Output Type | Open Drain | |
| Output Voltage Rating | 50 | V |
| Continuous Sink Current Capability | 150 mA | |
| Typical Current Limit at 25°C | 500 mA | |
| Package Type | 20-SOIC (0.295", 7.50mm Width) | |
| Mounting Type | Surface Mount |
Key Features
- Serial-In Interface: The device contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. Data transfers occur on the rising edge of the shift register clock (SRCK) and the register clock (RCK).
- Clear Register: A logical low on the shift register clear (SRCLR) pin clears all registers in the device. It is recommended to clear the device during power-up or initialization.
- Output Control: The output enable (G) pin controls the output buffers. Holding G high keeps all data in the output buffers low, while holding G low makes the data from the storage register transparent to the output buffers. This pin can also be used for global PWM dimming.
- Cascaded Application: The serial output (SER OUT) allows for cascading data to additional devices, enabling daisy-chaining for improved performance in applications with skewed clock signals or electromagnetic interference.
- Current Limit Function: Each output provides a current limit function, with a typical current limit of 500 mA at 25°C, decreasing as the junction temperature increases for additional device protection.
Applications
The TPIC6B595DW is suitable for various applications that require high current and voltage handling, such as:
- LED Drivers: For driving LED arrays in display panels, signage, and lighting systems.
- Relay Drivers: For controlling relays in industrial control systems.
- Motor Control: For driving small motors and solenoids in automotive and industrial applications.
- Power Management: In systems requiring high current sink capabilities and serial-to-parallel data conversion.
Q & A
- What is the operating voltage range of the TPIC6B595DW?
The operating voltage range is from 4.5 V to 5.5 V.
- What is the output type of the TPIC6B595DW?
The output type is open-drain.
- What is the maximum output voltage rating of the TPIC6B595DW?
The maximum output voltage rating is 50 V.
- How does the current limit function work in the TPIC6B595DW?
Each output provides a current limit function, with a typical current limit of 500 mA at 25°C, decreasing as the junction temperature increases.
- Can the TPIC6B595DW be cascaded with other devices?
Yes, the serial output (SER OUT) allows for cascading data to additional devices, enabling daisy-chaining.
- What is the purpose of the output enable (G) pin?
The output enable (G) pin controls the output buffers. Holding G high keeps all data in the output buffers low, while holding G low makes the data from the storage register transparent to the output buffers).
- What is the recommended operating temperature range for the TPIC6B595DW?
The recommended operating temperature range is from -40°C to 125°C).
- What package type is the TPIC6B595DW available in?
The device is available in a 20-SOIC (0.295", 7.50mm Width) package).
- Is the TPIC6B595DW RoHS compliant?
Yes, the TPIC6B595DW is RoHS compliant).
- How does the clear register function work in the TPIC6B595DW?
A logical low on the shift register clear (SRCLR) pin clears all registers in the device. It is recommended to clear the device during power-up or initialization).
