Overview
The L9823013TR, produced by STMicroelectronics, is an octal low-side driver circuit specifically designed for automotive applications. This integrated circuit is tailored to manage bulb, resistive, and inductive loads with advanced features such as serial input control, output protection, and diagnostic capabilities. The L9823, as it is also known, offers a robust solution for automotive systems requiring reliable and efficient load management.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VDD) | -0.3 to 7 | V |
| Output Current Capability | Up to 0.5 A | A |
| Continuous Output Voltage | -1.5 to 45 | V |
| Peak Output Current | -10 to 2 | A |
| Thermal Shutdown Threshold | 155 (Min.), 180 (Typ.) | °C |
| Standby Current | Typ. 35 µA @ VDD | µA |
| Operating Mode Current | Typ. 6 mA @ SPI - SCLK = 3 MHz | mA |
| Package Type | SO24 |
Key Features
- Cascadable SPI control for outputs, allowing for serial input control and diagnostic data transfer up to 3.0 MHz.
- Reset function with reset signal or undervoltage at VDD, ensuring all outputs are set to OFF during system power-up.
- Programmable intrinsic output voltage clamping at typical 50 V for inductive switching, facilitating flyback current recirculation.
- Overcurrent shutdown with latch-off for every write cycle (SFPD = low), and independent thermal shutdown of outputs (SOA Protection).
- Output status data available on the SPI using 8-bit I/O protocol, enabling real-time monitoring of output states.
- Low standby current with reset = low (typ. 35 µA @ VDD), enhancing power efficiency in standby modes.
- Open load detection (outputs off) and single VDD logic supply, simplifying system design and operation.
- High EMS immunity and low EME (controlled output slopes), ensuring robust performance in automotive environments.
Applications
The L9823013TR is primarily designed for automotive applications, including but not limited to:
- Management of bulb, resistive, and inductive loads in vehicle systems.
- Automotive lighting systems, such as headlights and interior lights.
- Control of various automotive accessories like wipers, heaters, and fans.
- Integration into body control modules (BCMs) and other automotive control systems.
Q & A
- What is the primary function of the L9823013TR?
The L9823013TR is an octal low-side driver circuit designed to manage bulb, resistive, and inductive loads in automotive applications.
- What is the maximum output current capability of the L9823013TR?
The L9823013TR can handle output currents up to 0.5 A.
- How does the SPI control work on the L9823013TR?
The L9823013TR features cascadable SPI control, allowing for serial input control and diagnostic data transfer up to 3.0 MHz.
- What is the purpose of the reset function in the L9823013TR?
The reset function sets all output switches OFF during system power-up or when the VDD voltage is below a certain threshold, ensuring predictable operation.
- How does the overcurrent protection work on the L9823013TR?
The L9823013TR features overcurrent shutdown with latch-off for every write cycle (SFPD = low), and independent thermal shutdown of outputs (SOA Protection).
- What is the standby current of the L9823013TR?
The standby current is typically 35 µA @ VDD when the reset pin is low.
- What package type is the L9823013TR available in?
The L9823013TR is available in the SO24 package type.
- What are some common applications of the L9823013TR in automotive systems?
Common applications include management of automotive lighting, control of accessories like wipers and heaters, and integration into body control modules (BCMs).
- How does the L9823013TR handle thermal shutdown?
The L9823013TR has a thermal shutdown threshold of 155°C (Min.) and 180°C (Typ.), with independent thermal shutdown of outputs.
- What is the significance of the SFPD pin in the L9823013TR?
The SFPD pin determines whether the output will instantly shutdown upon sensing a short circuit or remain in a current limiting mode until the fault is cleared or thermal shutdown is reached.
