STMicroelectronics

LF18CPT  

Linear & Switching Voltage Regulators

LF18CPT Description

The LF18CPT is a linear regulator IC designed for power management applications, manufactured by STMicroelectronics. This device offers a fixed output voltage of 1.8V and can deliver a maximum output current of 500mA. It features a single regulator with a positive output configuration, making it suitable for a variety of electronic systems requiring stable power supply. The LF18CPT operates with an input voltage range up to 16V, ensuring compatibility with a wide range of input sources. It also boasts a low dropout voltage of 0.7V at 200mA, which enhances efficiency and performance in low-voltage applications.

LF18CPT Features

• Output Type: Fixed
• Voltage - Input (Max): 16V
• Current - Output: 500mA
• Number of Regulators: 1
• Output Configuration: Positive
• Current - Supply (Max): 12 mA
• Voltage - Output (Min/Fixed): 1.8V
• Voltage Dropout (Max): 0.7V @ 200mA (Typ)
• Current - Quiescent (Iq): 1 mA
• PSRR: 82dB to 60dB (120Hz to 10kHz)
• Control Features: Enable
• Protection Features: Over Current, Over Temperature
• Package: PPAK
• Mounting Type: Surface Mount
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected
• RoHS Status: ROHS3 Compliant
• ECCN: EAR99
• HTSUS: 8542.39.0001

The LF18CPT stands out with its low quiescent current of 1 mA, which minimizes power consumption during operation. Its high Power Supply Rejection Ratio (PSRR) ensures excellent noise filtering and stable output voltage. The device also includes enable control, allowing for dynamic power management and efficient power sequencing in complex systems. The over current and over temperature protection features enhance reliability and protect the device from potential damage.

LF18CPT Applications

The LF18CPT is ideal for applications requiring a stable and efficient power supply, such as:

• Consumer Electronics: Portable devices, smartphones, and tablets benefit from the LF18CPT's low dropout voltage and high PSRR, ensuring stable power delivery and minimal noise.
• Industrial Equipment: The regulator's robust protection features and wide input voltage range make it suitable for industrial control systems and instrumentation.
• Telecommunications: The LF18CPT can be used in base stations and communication equipment where reliable power management is crucial.
• Automotive Electronics: The device's surface mount package and compatibility with a wide range of input voltages make it suitable for automotive applications, including infotainment systems and electronic control units.

Conclusion of LF18CPT

The LF18CPT is a versatile and efficient linear regulator designed for modern power management applications. Its fixed 1.8V output and 500mA current capability, combined with low dropout voltage and high PSRR, make it an excellent choice for a variety of electronic systems. The device's enable control and comprehensive protection features further enhance its reliability and flexibility. Despite its obsolete status, the LF18CPT remains a valuable component for applications where its unique features and performance benefits are required.

LF18CPT Documents

Download datasheets and manufacturer documentation for LF18CPT