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LP2951CD

LP2951CD Description

The LP2951CD from onsemi is a low-dropout (LDO) linear voltage regulator designed for precision voltage regulation in a wide range of applications. This adjustable (or fixed-output) regulator supports an input voltage range up to 30V and delivers a stable output current of 100mA. With a minimal dropout voltage of 0.45V @ 100mA, it ensures efficient operation even when the input voltage approaches the output level. The device features a quiescent current of 120 µA, making it suitable for battery-powered systems. Packaged in an 8-SOIC surface-mount form factor, the LP2951CD is ideal for space-constrained designs.

LP2951CD Features

• Adjustable/Fixed Output: Configurable from 1.235V to 30V (fixed 5V variant available).
• Low Dropout Voltage: 0.45V @ 100mA ensures stable performance under low input conditions.
• Low Quiescent Current: 120 µA minimizes power loss in standby modes.
• Robust Protection: Includes over-current and over-temperature safeguards for enhanced reliability.
• Wide Input Range: Supports up to 30V, accommodating diverse power sources.
• Surface-Mount Package: 8-SOIC for compact PCB integration.

LP2951CD Applications

The LP2951CD excels in applications requiring precise, low-noise voltage regulation:

• Battery-Powered Devices: Portable electronics, IoT sensors, and wearables benefit from its low quiescent current.
• Industrial Control Systems: Stable voltage supply for microcontrollers, sensors, and analog circuits.
• Automotive Electronics: Suitable for infotainment and low-power auxiliary systems due to its wide input range.
• Medical Equipment: Reliable performance in diagnostic and monitoring devices.

Conclusion of LP2951CD

The LP2951CD stands out as a versatile, efficient LDO regulator, combining low dropout, precision regulation, and robust protection in a compact package. While marked as obsolete, its performance metrics make it a viable choice for legacy designs or applications requiring proven reliability. Engineers seeking a balance between efficiency, stability, and integration should consider this regulator for low-to-moderate power requirements.