Overview
The TPIC6C595, produced by Texas Instruments, is a monolithic, medium-voltage, low-current power 8-bit shift register. This device is designed for use in systems that require relatively moderate load power, such as driving LEDs, relays, solenoids, and other low-current or medium-voltage loads. It features low-side, open-drain DMOS transistors with built-in voltage clamps for inductive transient protection, making it suitable for a variety of power driver applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Supply Range | 4.5 to 5.5 | V |
| Operating Case Temperature Range | −40 to 125 | °C |
| Output Current Rating (Continuous) | 100 | mA |
| Maximum Current Limit per Output | 250 | mA |
| ESD Protection | 2500 | V |
| Output Clamp Voltage | 33 | V |
| Static Drain-to-Source On-State Resistance (rDS(on)) | 7 | Ω (Typical) |
| Avalanche Energy | 30 | mJ |
| Packages Available | SOIC (16), TSSOP (16), PDIP (16) |
Key Features
- Eight Power DMOS Transistor Outputs with 100-mA continuous current rating and up to 250-mA current limit capability.
- Low rDS(on) of 7 Ω (Typical) for efficient power handling.
- Avalanche Energy of 30 mJ for robust transient protection.
- ESD Protection of up to 2500 V (Human-Body Model and Machine Model).
- Output Clamp Voltage of 33 V for inductive transient protection.
- Cascadable design allowing multiple devices to be connected in series.
- Low-power consumption and low thermal resistance for reliable operation.
Applications
- Instrumentation Clusters: Ideal for driving display elements and indicators.
- Tell-Tale Lamps: Suitable for automotive and industrial lighting applications.
- LED Illumination and Controls: Can drive multiple LEDs in various configurations.
- Automotive Relay or Solenoids: Used in automotive systems to control relays and solenoids.
- Automotive Cluster Driver: Commonly used in automotive cluster panels to control LEDs and other display elements.
Q & A
- What is the operating voltage range of the TPIC6C595?
The TPIC6C595 operates from an input voltage supply range of 4.5 V to 5.5 V.
- What is the maximum continuous current rating per output?
The maximum continuous current rating per output is 100 mA.
- What is the maximum current limit capability per output?
The maximum current limit capability per output is 250 mA.
- What type of protection does the TPIC6C595 offer against ESD?
The TPIC6C595 offers up to 2500 V of ESD protection.
- What is the purpose of the built-in voltage clamp on the outputs?
The built-in voltage clamp provides inductive transient protection.
- Can the TPIC6C595 be cascaded with other devices?
- What are the available package types for the TPIC6C595?
The TPIC6C595 is available in SOIC (16), TSSOP (16), and PDIP (16) packages.
- What is the recommended layout practice to ensure thermal reliability?
Maximize copper coverage on the PCB, add thermal vias under the package ground pad, and ensure solder coverage is at least 85%.
- What are some common applications of the TPIC6C595?
Common applications include instrumentation clusters, tell-tale lamps, LED illumination and controls, and automotive relay or solenoids.
- How does the TPIC6C595 handle thermal management?
The device does not have thermal shutdown protection, so good PCB design practices such as maximizing copper coverage and using thermal vias are essential to prevent thermal damage.
