Overview
The E-L9826, produced by STMicroelectronics, is a protected octal low-side driver IC specifically designed for automotive applications. This device features an 8-bit SPI (Serial Peripheral Interface) that enables control over all eight output channels, as well as diagnostic capabilities through the same interface. The E-L9826 is packaged in a 20-pin SOIC (Small Outline Integrated Circuit) package, making it compact and suitable for various automotive systems.
The device includes multiple protection mechanisms such as overcurrent, short-circuit, and thermal shutdown, ensuring robust operation in demanding environments. Additionally, it supports parallel control for outputs 1 and 2, enhancing its versatility in different application scenarios.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | -0.3 | - | 7 | V |
| Output Current (IOUT) per Channel | -2 | - | 1.0 | A |
| On Resistance (RDSon) | - | - | 3.0 | Ω |
| Thermal Shutdown Threshold (TJSC) | - | 150 | 165 | °C |
| Clock Frequency (fclk) | - | - | 3 MHz | - |
| Output Clamp Voltage (Vclp) | 45 | - | 62 | V |
| Short Circuit Current Limitation (ILIM) for Outputs 1 and 2 | 0.5 | - | 1.1 | A |
| Overcurrent Shutoff Threshold for Outputs 3 to 8 | 0.45 | - | 1.1 | A |
Key Features
- 8-channel low-side driver with 450 mA output current capability per channel
- 8-bit SPI serial interface for controlling all outputs and diagnostics
- Parallel control for outputs 1 and 2 through dedicated input pins (NON1 and NON2)
- Overcurrent and short-circuit protections for all outputs
- Thermal shutdown and short circuit current limitation
- Intrinsic output voltage clamping (50 V typical) for inductive load drive
- Diagnostic capabilities through SPI interface
- Asynchronous reset function
- Compact 20-pin SOIC package
Applications
The E-L9826 is designed for use in automotive systems, where reliability and robustness are critical. It is suitable for various applications such as:
- Automotive body control modules
- Lighting control systems
- Power distribution and management systems
- Actuator control in automotive environments
- Other high-reliability automotive electronics
Q & A
- What is the primary function of the E-L9826?
The E-L9826 is an octal low-side driver IC designed to control and diagnose eight output channels, primarily for automotive applications.
- What interface does the E-L9826 use for control and diagnostics?
The E-L9826 uses an 8-bit SPI (Serial Peripheral Interface) for controlling all outputs and performing diagnostics.
- What are the protection mechanisms available in the E-L9826?
The device includes overcurrent, short-circuit, and thermal shutdown protections to ensure robust operation.
- Can outputs 1 and 2 be controlled differently than the other outputs?
- What is the maximum output current per channel?
The maximum output current per channel is 1.0 A.
- What is the thermal shutdown threshold of the E-L9826?
The thermal shutdown threshold is between 150°C and 165°C.
- What is the purpose of the output voltage clamping feature?
The output voltage clamping feature protects the device during operation with inductive loads by limiting the output voltage to 50 V typical.
- How many pins does the E-L9826 have?
The E-L9826 has 20 pins.
- What is the clock frequency of the SPI interface?
The clock frequency of the SPI interface is up to 3 MHz.
- What are some typical applications of the E-L9826?
The E-L9826 is typically used in automotive body control modules, lighting control systems, power distribution and management systems, and actuator control in automotive environments.
