Overview
The A5970ADTR is a step-down monolithic power switching regulator designed by STMicroelectronics, specifically tailored for automotive applications. This regulator is qualified following the AEC-Q100 requirements, ensuring its reliability and performance in harsh automotive environments. It features a high-efficiency design, capable of delivering up to 1 A DC output current, with an operating input voltage range from 4 V to 36 V. The device incorporates advanced protection mechanisms and synchronization capabilities, making it a robust solution for various automotive power management needs.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Input Voltage | 4 | - | 36 | V |
| Output Current | - | - | 1 | A |
| Output Voltage Range | 1.235 | - | VIN | V |
| Switching Frequency | 430 | 500 | 570 | kHz |
| MOSFET On Resistance | 0.250 | 0.5 | - | Ω |
| Maximum Limiting Current | 1.35 | 1.8 | - | A |
| Operating Junction Temperature Range | -40 | - | 150 | °C |
| Storage Temperature Range | -55 | - | 150 | °C |
Key Features
- Qualified following the AEC-Q100 requirements for automotive applications.
- Up to 1 A DC output current.
- Operating input voltage from 4 V to 36 V, suitable for cold crank conditions.
- Output voltage adjustable from 1.235 V to VIN.
- Low dropout operation with 100% duty cycle capability.
- Internally fixed switching frequency at 500 kHz.
- Voltage feed-forward and zero load current operation.
- Internal current limiting and pulse-by-pulse current limit for overcurrent protection.
- Inhibit function for zero current consumption in standby mode.
- Synchronization capability to avoid beating frequency noise.
- Thermal shutdown protection.
Applications
The A5970ADTR is dedicated to automotive applications, including but not limited to:
- Power management in automotive electronic control units (ECUs).
- Supplying power to various automotive subsystems such as infotainment systems, sensors, and actuators.
- Use in battery management systems and charging circuits.
- Implementation in automotive lighting and display systems.
Q & A
- What is the maximum output current of the A5970ADTR?
The A5970ADTR can deliver up to 1 A DC output current.
- What is the operating input voltage range of the A5970ADTR?
The operating input voltage range is from 4 V to 36 V.
- What is the switching frequency of the A5970ADTR?
The switching frequency is internally fixed at 500 kHz.
- Does the A5970ADTR have overcurrent protection?
- Can the A5970ADTR be synchronized with other regulators?
- What is the purpose of the inhibit function in the A5970ADTR?
The inhibit function allows the device to enter a standby mode with zero current consumption.
- What is the thermal shutdown protection in the A5970ADTR?
The device has thermal shutdown protection that disables the switching activity if the junction temperature reaches +150 °C ± 10 °C.
- What is the typical MOSFET on resistance of the A5970ADTR?
The typical MOSFET on resistance is 0.250 Ω.
- What are the storage and operating temperature ranges for the A5970ADTR?
The storage temperature range is -55 °C to 150 °C, and the operating junction temperature range is -40 °C to 150 °C.
- Is the A5970ADTR qualified for automotive use?
