Overview
The L99SD01-E, also available in the L99SD01TR-E package, is an integrated solenoid driver designed specifically for automotive applications. This device is intended for driving inductive loads such as Compressed Natural Gas (CNG) injectors. It features CMOS-compatible inputs and a robust set of diagnostic and protection mechanisms, making it a reliable choice for demanding automotive environments.
Key Specifications
| Parameter | Specification |
|---|---|
| Package | PowerSSO-36 |
| Load Current | Up to 14 A |
| Excitation Switch (S1) Resistance | 60 mΩ |
| Recirculation Switch (S2) Resistance | 60 mΩ |
| Clamp Voltage (S1) | Minimum 45 V |
| PWM Operation Frequency | Above 10 KHz |
| Interface | I2C standard interface |
| Diagnostic Outputs | Open drain fault detection, Clamp activation flag |
| Protection Features | Thermal shutdown and warning, Overcurrent shutdown and diagnostic, Undervoltage and overvoltage detection, Open-load detection |
Key Features
- Automotive Qualified: Designed to meet the stringent requirements of automotive applications.
- CMOS-Compatible Inputs: Ensures compatibility with a wide range of control signals.
- Integrated Clamp Structure: Provides effective voltage clamping to protect the device and the load.
- Current Sense Amplifier: Includes an internal sense resistor for precise current monitoring.
- I2C Interface: Allows for digital control and diagnostic feedback, enabling detailed parameter setting and monitoring.
- Diagnostic Outputs: Provides indicators for fault conditions and clamp activation.
- Protection Mechanisms: Includes thermal shutdown, overcurrent protection, undervoltage and overvoltage detection, and open-load detection.
Applications
The L99SD01-E is primarily used in automotive applications, particularly for driving inductive loads such as:
- Compressed Natural Gas (CNG) injectors.
- Other solenoid-based systems in vehicles.
Q & A
- What is the primary application of the L99SD01-E?
The L99SD01-E is primarily used for driving inductive loads in automotive applications, such as CNG injectors.
- What is the maximum load current the L99SD01-E can handle?
The device can handle load currents up to 14 A.
- What type of inputs does the L99SD01-E support?
The device supports CMOS-compatible inputs.
- What is the resistance of the excitation switch (S1) and recirculation switch (S2)?
Both switches have a resistance of 60 mΩ.
- What is the minimum clamp voltage for switch S1?
The minimum clamp voltage for switch S1 is 45 V.
- Does the L99SD01-E support PWM operation?
Yes, it supports PWM operation above 10 KHz.
- What type of interface does the L99SD01-E use for control and diagnostics?
The device uses an I2C standard interface.
- What diagnostic outputs are available on the L99SD01-E?
The device provides open drain fault detection and a flag for clamp activation.
- What protection features are included in the L99SD01-E?
The device includes thermal shutdown and warning, overcurrent shutdown and diagnostic, undervoltage and overvoltage detection, and open-load detection.
- What package options are available for the L99SD01-E?
The device is available in the PowerSSO-36 package.
