Overview
The LT1965EMS8E-1.8#PBF is a low noise, low dropout linear regulator from Analog Devices Inc. This device is part of the LT1965 series, which is designed to supply 1.1A of output current with a typical dropout voltage of 310mV. The regulator is available in a fixed output voltage of 1.8V and is packaged in an 8-lead MSOP (Micro Small Outline Package) with an exposed pad that must be soldered to the PCB for proper thermal management.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Output Current | 1.1 | A |
| Typical Dropout Voltage | 310 | mV |
| Output Voltage | 1.8 | V |
| Input Voltage Range | Up to 20 | V |
| Quiescent Current (Operating) | 500 | µA |
| Quiescent Current (Shutdown) | <1 | µA |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | 8-Lead MSOP | |
| Thermal Junction-to-Ambient Resistance (θJA) | 60 | °C/W |
| Thermal Junction-to-Case Resistance (θJC) | 10 | °C/W |
Key Features
- Low noise operation, making it ideal for sensitive RF and DSP supply applications.
- Low dropout voltage of 310mV typical.
- High output current capability of 1.1A.
- Stable operation with output capacitors as low as 10µF.
- Internal protection circuitry includes reverse-battery protection, current limiting with foldback, thermal limiting, and reverse-current protection.
- Low quiescent current in operating and shutdown modes.
- Available in fixed output voltages (1.5V, 1.8V, 2.5V, 3.3V) and an adjustable version.
Applications
- Sensitive RF and DSP supply applications.
- General-purpose power supply for low-voltage systems.
- Power management in battery-powered devices.
- Supply voltage regulation in industrial and automotive systems.
- LED driver and display control systems.
Q & A
- What is the typical dropout voltage of the LT1965EMS8E-1.8#PBF?
The typical dropout voltage is 310mV.
- What is the maximum output current of the LT1965EMS8E-1.8#PBF?
The maximum output current is 1.1A.
- What is the operating temperature range of the LT1965EMS8E-1.8#PBF?
The operating temperature range is -40°C to 125°C.
- What type of package does the LT1965EMS8E-1.8#PBF come in?
The device is packaged in an 8-lead MSOP (Micro Small Outline Package).
- Does the LT1965EMS8E-1.8#PBF have internal protection features?
Yes, it includes reverse-battery protection, current limiting with foldback, thermal limiting, and reverse-current protection.
- What is the quiescent current in shutdown mode?
The quiescent current in shutdown mode is less than 1µA.
- Is the LT1965EMS8E-1.8#PBF stable with low output capacitors?
Yes, it is stable with output capacitors as low as 10µF.
- What are some common applications for the LT1965EMS8E-1.8#PBF?
Common applications include sensitive RF and DSP supply, general-purpose power supply, battery-powered devices, and industrial and automotive systems.
- How much noise does the LT1965EMS8E-1.8#PBF produce?
The device is known for its low noise operation, making it suitable for sensitive applications.
- Can the output voltage of the LT1965EMS8E-1.8#PBF be adjusted?
The LT1965 series includes both fixed and adjustable versions, but the LT1965EMS8E-1.8#PBF is a fixed 1.8V output regulator.
