Overview
The LM1085ISX-3.3/NOPB is a high-performance linear voltage regulator produced by Texas Instruments. This component is designed to provide a stable 3.3V output with a maximum current of 3A. It is part of the LM1085 series, known for its low dropout voltage and high current capability, making it suitable for a wide range of applications requiring reliable voltage regulation.
The regulator features a low dropout voltage of 1.5V at 3A, high power supply rejection ratio (PSRR) of 72dB at 120Hz, and excellent line and load regulation. It is available in several package types, including TO-263-3, TO-263-4, and D2Pak, which are surface mountable and RoHS compliant.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LM1085ISX-3.3/NOPB |
| Category | Power Management (PMIC) / Voltage Regulators - Linear, Low Drop Out (LDO) Regulators |
| Package | TO-263-3, TO-263-4, D2Pak (3 Leads + Tab), TO-263AA |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 27V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Voltage Dropout (Max) | 1.5V @ 3A |
| Current - Output | 3A |
| Current - Supply (Max) | 10mA |
| PSRR | 72dB (120Hz) |
| Protection Features | Over Current, Over Temperature |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
Key Features
- High Current Capability: The LM1085ISX-3.3/NOPB can deliver up to 3A of output current, making it suitable for high-power applications.
- Low Dropout Voltage: With a dropout voltage of 1.5V at 3A, this regulator ensures efficient voltage regulation even at low input voltages.
- High PSRR: A power supply rejection ratio of 72dB at 120Hz ensures that the output voltage remains stable despite input voltage fluctuations.
- Excellent Line and Load Regulation: The regulator offers 0.015% line regulation and 0.1% load regulation, ensuring a stable output voltage under varying conditions.
- Protection Features: Built-in overcurrent and overtemperature protection enhance the reliability and lifespan of the device.
- Surface Mount Packages: Available in TO-263-3, TO-263-4, and D2Pak packages, which are RoHS compliant and suitable for surface mount applications.
Applications
- Industrial Control Systems: The LM1085ISX-3.3/NOPB is used in various industrial control systems where stable and high-current voltage regulation is required.
- Automotive Systems: Its operating temperature range of -40°C to 125°C makes it suitable for automotive applications.
- Power Supplies: It is often used in power supply units (PSUs) and DC-DC converters due to its high current capability and low dropout voltage.
- Embedded Systems: The regulator is used in embedded systems that require a stable 3.3V supply, such as in microcontroller and microprocessor-based systems.
- Telecommunication Equipment: It is also used in telecommunication equipment where reliable voltage regulation is crucial.
Q & A
- What is the maximum output current of the LM1085ISX-3.3/NOPB?
The maximum output current is 3A.
- What is the input voltage range for the LM1085ISX-3.3/NOPB?
The input voltage range is from 4.8V to 27V.
- What is the dropout voltage of the LM1085ISX-3.3/NOPB at 3A?
The dropout voltage is 1.5V at 3A.
- What is the PSRR of the LM1085ISX-3.3/NOPB at 120Hz?
The PSRR is 72dB at 120Hz.
- What are the protection features of the LM1085ISX-3.3/NOPB?
The regulator has built-in overcurrent and overtemperature protection.
- What are the available package types for the LM1085ISX-3.3/NOPB?
The available packages are TO-263-3, TO-263-4, and D2Pak (3 Leads + Tab), TO-263AA.
- Is the LM1085ISX-3.3/NOPB RoHS compliant?
Yes, the LM1085ISX-3.3/NOPB is RoHS compliant.
- What is the operating temperature range of the LM1085ISX-3.3/NOPB?
The operating temperature range is -40°C to 125°C.
- What are some common applications of the LM1085ISX-3.3/NOPB?
Common applications include industrial control systems, automotive systems, power supplies, embedded systems, and telecommunication equipment.
- How do I ensure the quality of the LM1085ISX-3.3/NOPB?
Ensure that you purchase from authorized distributors and check for the RoHS compliance and other quality certifications.
