Overview
The L5963Q-V0T, produced by STMicroelectronics, is a dual monolithic switching regulator designed for automotive applications. It integrates two step-down synchronous switching voltage regulators, a low drop-out linear regulator (LDO), and a high side driver. This IC is AEC-Q100 qualified, ensuring it meets the stringent requirements of the automotive industry. The regulators can be connected directly to the vehicle battery and offer features such as load dump protection and a wide input voltage range from 3.5 V to 26 V. The device also includes voltage supervisors, adjustable voltage detectors, and independent thermal and current protection for each regulator.
Key Specifications
| Parameter | Description |
|---|---|
| Input Voltage Range | 3.5 V to 26 V |
| Output Voltage (Minimum) | 1 V |
| Load Current (Maximum) | 3.0 A |
| Free-Run Frequency | 250 kHz |
| Synchronization Frequency Range | 250 kHz to 2 MHz |
| LDO Maximum Current | 250 mA |
| High Side Driver Drop-Out Voltage | 0.5 V @ 0.5 A |
| Operating Temperature Range | -40 °C to 85 °C |
| Package Options | PowerSSO 36 (exposed pad and slug-up), VFQFPN 48 |
| Quiescent Current in Standby | 25 μA typical |
Key Features
- AEC-Q100 qualified for automotive applications
- Two step-down synchronous switching voltage regulators with internal power switches
- Internal high-side/low-side NDMOS
- Integrated soft-start and independent hardware enable pins
- 180° PWM output phase shift and programmable switching frequency divider
- Power good function and adjustable voltage detector outputs
- One standby/linear regulator with programmable output voltage and backup function
- High side driver with low drop-out voltage and protection against shorts and overvoltages
- Programmable under voltage battery detector and load dump protection
- Independent thermal protection and current limit on all regulators
- Extremely low quiescent current in standby conditions
Applications
The L5963Q-V0T is primarily designed for automotive applications where robust power management is crucial. It is suitable for systems that require high reliability, wide input voltage range, and load dump protection. Typical applications include:
- Automotive power systems
- Vehicle battery management
- Power supplies for automotive electronics
- Systems requiring high side drivers and voltage supervisors
Q & A
- What is the input voltage range of the L5963Q-V0T?
The input voltage range is from 3.5 V to 26 V.
- What is the minimum output voltage of the DC-DC converters?
The minimum output voltage is 1 V.
- What is the maximum load current of the DC-DC converters?
The maximum load current is 3.0 A.
- Can the DC-DC converters be synchronized to an external clock?
- What is the maximum current capability of the LDO regulator?
The maximum current capability of the LDO regulator is 250 mA.
- What is the drop-out voltage of the high side driver?
The drop-out voltage of the high side driver is 0.5 V at 0.5 A.
- What are the package options available for the L5963Q-V0T?
The package options include PowerSSO 36 (exposed pad and slug-up) and VFQFPN 48.
- What is the quiescent current in standby conditions?
The quiescent current in standby conditions is typically 25 μA.
- Does the L5963Q-V0T have built-in protection features?
- Is the L5963Q-V0T AEC-Q100 qualified?
