Overview
The L9758TR, produced by STMicroelectronics, is a multiple output voltage regulator designed to support high-end automotive microcontrollers used in powertrain applications. This device integrates linear, switchmode (buck and boost), and tracking regulators to provide a comprehensive power management solution. It features power on reset functionality and controlled slew rates for the VDD5, VDDL, and VCORE outputs. The L9758TR is AEC-Q100 qualified, ensuring it meets the stringent reliability and quality standards of the automotive industry.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | PowerSO-36 | - |
| Operating Temperature | -40°C to +125°C | - |
| Input Voltage Range | 4 V to 40 V | - |
| Number of Outputs | 9 | - |
| Buck Converter Current | Minimum of 2 A (RMS) | - |
| VDD5 LDO Regulator | 5 V, 2% @ 1 A | - |
| VDDL LDO Regulator | Programmable 3.3 V or 2.6 V, 2% @ 1 A | - |
| VCORE LDO Regulator | Programmable, 2% @ 1 A with external voltage divider and pass transistor | - |
| Standby Memory Regulator (VKAM) | Programmable 1 V or 1.5 V, 10% @ 10 mA | - |
| Alternate Standby Regulator (VSTBY) | Programmable 3.3 V or 2.6 V, 10% @ 10 mA | - |
| Tracking Regulators | Four 5 V ± 7 mV @ 50 mA protected tracking regulators | - |
Key Features
- AEC-Q100 qualified for automotive reliability and quality standards.
- Buck converter pre-regulated supply rated for a minimum of 2 A (RMS).
- Optional Boost converter for low battery conditions.
- 5 V, 2% @ 1 A, VDD5 low dropout (LDO) regulator.
- Programmable 3.3 V or 2.6 V, 2% @ 1 A, VDDL LDO regulator with external pass transistor.
- Programmable microcontroller core voltage LDO regulator, VCORE 2% @ 1 A with external voltage divider and pass transistor.
- Programmable 1 V or 1.5 V, 10% @ 10 mA, standby memory regulator (VKAM).
- Programmable 3.3 V or 2.6 V, 10% @ 10 mA alternate standby regulator (VSTBY).
- Four 5 V ± 7 mV @ 50 mA protected tracking regulators, one with selectable external voltage reference.
- Independent reset signals, RST5 and RSTL for the VDD5, VDDL supplies.
- Independent standby voltage monitor STANDBY_OK.
- Two power supply enable signals for different voltage level signals.
- Battery voltage thresholding - IGN and logic level thresholding - PSU_EN.
Applications
The L9758TR is primarily designed for high-end automotive microcontrollers used in powertrain applications. It is suitable for various automotive systems that require multiple regulated voltage outputs, such as engine control units, transmission control units, and other powertrain-related electronics.
Q & A
- What is the primary function of the L9758TR?
The L9758TR is a multiple output voltage regulator designed to support high-end automotive microcontrollers used in powertrain applications.
- What are the key types of regulators integrated into the L9758TR?
The device integrates linear, switchmode (buck and boost), and tracking regulators.
- What is the operating temperature range of the L9758TR?
The operating temperature range is -40°C to +125°C.
- What is the input voltage range for the L9758TR?
The input voltage range is 4 V to 40 V.
- How many outputs does the L9758TR have?
The device has 9 outputs.
- What is the current rating of the buck converter?
The buck converter is rated for a minimum of 2 A (RMS).
- What are the programmable voltage options for the VDDL LDO regulator?
The VDDL LDO regulator can be programmed to 3.3 V or 2.6 V, with an accuracy of 2% @ 1 A.
- What is the purpose of the STANDBY_OK signal?
The STANDBY_OK signal is an independent standby voltage monitor.
- Does the L9758TR have any reset signals?
Yes, it has independent reset signals, RST5 and RSTL, for the VDD5 and VDDL supplies.
- Is the L9758TR AEC-Q100 qualified?
Yes, the L9758TR is AEC-Q100 qualified, ensuring it meets automotive reliability and quality standards.
