SN6501-Q1

The SN6501-Q1 is a high-reliability, low-power 3.3V CMOS voltage regulator designed for automotive applications, featuring an integrated N-channel MOSFET and precise current limiting for robust performance in harsh environments. It operates from a wide input voltage range of 4.5V to 36V, making it suitable for both 12V and 24V vehicle systems, while maintaining stable output regulation under varying load conditions. This device includes built-in protection features such as over-current protection (OCP), thermal shutdown, and undervoltage lockout (UVLO), ensuring system safety and longevity even during transient faults or abnormal operating conditions. The internal MOSFET provides efficient switching with low on-resistance, minimizing power loss and heat generation, which enhances overall system efficiency and reliability. Designed to meet AEC-Q100 Grade 1 qualification standards, the SN6501-Q1 is optimized for use in automotive electronics including infotainment systems, ADAS sensors, body control modules, and telematics units. Its compact package—typically a small outline 8-pin SOIC—allows for space-efficient integration into densely populated PCB designs without compromising thermal performance. The regulator offers adjustable output voltage via external resistors, enabling flexible configuration across multiple supply requirements within a single system. Additionally, its enable pin allows for remote control of operation, supporting power management strategies that reduce quiescent current consumption during standby modes. With a typical quiescent current below 100 µA, it contributes significantly to energy savings in always-on vehicle systems. Its robust design supports high-frequency switching up to 1 MHz, reducing the size of external components like inductors and capacitors while maintaining excellent transient response and minimal output ripple. This makes it ideal for applications where board space and electromagnetic compatibility (EMC) are critical design constraints. Engineered for long-term operational stability in extreme temperatures—from -40°C to +125°C—the SN6501-Q1 ensures consistent performance across diverse automotive environments, including engine compartments and exterior sensor housings. These characteristics make it a preferred choice for designers seeking reliable, efficient, and compliant power solutions in modern automotive electronics.