STMicroelectronics L7905CD2T-TR

The L7905CD2T-TR is a negative voltage regulator from STMicroelectronics that provides a stable -5V output voltage. It's designed to be used in various applications where a stable negative voltage is required. The device can provide up to 1.5A of output current, depending on conditions such as input voltage and heat dissipation. Functions: - Voltage Regulation: Provides a fixed -5V output voltage. - Current Limiting: Protects the device from damage due to overcurrent conditions. - Thermal Protection: Prevents overheating and protects the IC. - Ripple Rejection: Reduces the impact of input voltage fluctuations on the output voltage. Applications: - Power Supplies: Used in various power supply configurations where a -5V rail is needed. - Analog Circuits: Provides a negative reference voltage for operational amplifiers and other analog devices. - Microcontroller Circuits: Used in embedded systems that require dual polarity power supplies. - Signal Processing: In circuits that manipulate or condition analog signals, a stable negative voltage may be essential. Alternative Parts: 1. LM7905: A similar negative voltage regulator that provides -5V output. 2. LM337: An adjustable negative voltage regulator that can be set to output -5V among other voltages. 3. LT1085: A low dropout linear voltage regulator that can provide -5V with lower input-output differential. Embedded Modules: The L7905CD2T-TR itself is not an embedded module but is often included in circuit designs for creating custom power supply solutions. In embedded systems, you may find it integrated with microcontrollers or processors requiring negative voltage along with other supporting components such as capacitors and shield circuitry for optimal performance. Related Q&A 1. Q: What is the maximum output current of the L7905CD2T-TR? A: The L7905CD2T-TR can provide a maximum output current of up to 1.5A. 2. Q: What input voltage is required for the L7905CD2T-TR to operate correctly? A: The input voltage should typically be at least -7V to -20V for the L7905CD2T-TR to function correctly and maintain its -5V output. 3. Q: How does the L7905CD2T-TR protect against overheating? A: The L7905CD2T-TR has built-in thermal protection that shuts down the device in cases of excessive temperature, helping to prevent damage. 4. Q: Can the L7905CD2T-TR be used for higher power applications? A: While the L7905CD2T-TR can provide up to 1.5A, for higher power applications, it would be advisable to look for higher current-rated regulators or consider using multiple devices in parallel with proper heat dissipation techniques. 5. Q: What types of applications can benefit from using a negative voltage regulator like the L7905CD2T-TR? A: Applications that require dual-supply systems such as operational amplifiers, analog signal processing circuits, or certain microcontroller applications can benefit from a negative voltage regulator like the L7905CD2T-TR.