Overview
The L9916B is a smart alternator voltage regulator designed by STMicroelectronics for use in automotive applications. It is compatible with both 12 V and 24 V systems, making it versatile for a wide range of charging applications. The device features a fully monolithic design and includes OTP cells for parameter programmability, which enhances its suitability for various charging scenarios. The L9916B is AEC-Q100 qualified, ensuring it meets stringent automotive standards for reliability and performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Transient supply voltage (load dump) | 58 | V |
| Transient supply voltage (low energy spikes) | 58 | V |
| Junction temperature range | -40 to 175 | °C |
| Storage and case temperature range | -40 to 150 | °C |
| Total power dissipation (@ Tcase ≤ 150°C, Ifield ≤ 5 A) | 4 | W |
| Reverse battery voltage @ 25 °C, T = 15 sec | -2.5 | V |
| Normal working condition reverse voltage (PH vs. GND) | -1.5 | V |
| DC pin current on F, B, GND (bonding limitation) | 15 | A |
Key Features
- AEC-Q100 qualified for automotive reliability
- Fully monolithic design
- High side field driver
- Self-start function
- Regulated voltage thermally compensated
- Configurable parameters through OTP cells
- Lamp driver (wake up and warning detection)
- Load Response Control (LRC)
- Voltage control loop configurable Proportional Integral or Proportional only
- Protections: Thermal shutdown, Field short circuit protection, Protected Lamp driver and high side relay driver
Applications
The L9916B is primarily used in automotive applications for regulating alternator voltage in both 12 V and 24 V systems. It is suitable for multi-phase-current alternators and is designed to maintain the battery voltage at its nominal value regardless of vehicle demand. The device is also useful in various charging applications due to its programmable parameters through OTP cells.
Q & A
- What is the L9916B used for?
The L9916B is used as a smart alternator voltage regulator in automotive applications for both 12 V and 24 V systems.
- What are the key features of the L9916B?
Key features include AEC-Q100 qualification, fully monolithic design, high side field driver, self-start function, regulated voltage thermally compensated, and configurable parameters through OTP cells.
- What protections does the L9916B offer?
The device offers thermal shutdown, field short circuit protection, and protected lamp driver and high side relay driver.
- What is the operating temperature range of the L9916B?
The operating temperature range is from -40°C to 175°C for junction temperature and from -40°C to 150°C for storage and case temperature.
- Is the L9916B compatible with multi-phase-current alternators?
- What is the purpose of OTP cells in the L9916B?
The OTP cells allow for parameter programmability, making the device suitable for a wide range of charging applications.
- Does the L9916B support load response control?
- Can the voltage control loop of the L9916B be configured?
- What is the maximum transient supply voltage the L9916B can handle?
The maximum transient supply voltage is 58 V.
- Is the L9916B RoHS compliant?
