Overview
The LT3091EDE#TRPBF is a high-performance, 1.5A negative linear regulator produced by Analog Devices Inc. This device is part of the LT3091 series and is known for its low dropout voltage, high current capability, and programmable current limit. It is designed to provide precision output voltage regulation with a wide output voltage range from 0V to -32V. The LT3091EDE#TRPBF is suitable for applications requiring high current without the need for a heat sink, making it ideal for various power management scenarios.
Key Specifications
| Parameter | Min | Typical | Max | Units |
|---|---|---|---|---|
| Input Voltage Range | -36 | - | -1.9 | V |
| Output Current | - | 1.5 | - | A |
| Dropout Voltage | - | 300 | - | mV |
| Output Voltage Range | 0 | - | -32 | V |
| Quiescent Current | - | 1.2 | - | mA |
| Operating Temperature Range | -40 | - | 125 | °C |
| Package Type | - | DFN-14 | - | - |
| PSRR | - | 85 | - | dB |
| Output Noise (10Hz to 100kHz) | - | 18 | - | µVRMS |
Key Features
- Low Dropout Voltage: Typical dropout voltage of 300mV, ensuring efficient voltage regulation.
- High Current Capability: Supplies up to 1.5A of output current without the need for a heat sink.
- Programmable Current Limit: Adjustable current limit using a single resistor.
- Wide Output Voltage Range: Output voltage adjustable from 0V to -32V.
- High PSRR and Low Noise: 85dB PSRR and output noise as low as 18µVRMS.
- Thermal and Overcurrent Protection: Includes thermal shutdown with hysteresis and internal current limit with fold-back.
- Paralleling Capability: Easily paralleled to increase output current or spread heat on surface-mounted boards.
- Low Quiescent Current: Nominal quiescent current of 1.2mA, dropping to less than 1µA in shutdown.
Applications
- High-Current Power Supplies: Suitable for applications requiring high current without heat sinks.
- Precision Voltage Regulation: Ideal for systems needing precise output voltage regulation.
- Surface-Mounted Boards: Can be paralleled to spread heat and increase output current.
- Aerospace and Industrial Systems: The LT3091MP version is guaranteed over the full -55°C to 150°C operating junction temperature range, making it suitable for harsh environments.
Q & A
- What is the typical dropout voltage of the LT3091EDE#TRPBF?
The typical dropout voltage is 300mV.
- What is the maximum output current of the LT3091EDE#TRPBF?
The maximum output current is 1.5A.
- What is the operating temperature range of the LT3091EDE#TRPBF?
The operating temperature range is from -40°C to 125°C.
- Can the LT3091EDE#TRPBF be paralleled to increase output current?
Yes, the LT3091EDE#TRPBF can be easily paralleled to increase output current or spread heat on surface-mounted boards.
- What is the quiescent current of the LT3091EDE#TRPBF?
The nominal quiescent current is 1.2mA, dropping to less than 1µA in shutdown.
- What is the PSRR of the LT3091EDE#TRPBF?
The PSRR is 85dB.
- What is the output noise of the LT3091EDE#TRPBF?
The output noise is as low as 18µVRMS from 10Hz to 100kHz.
- Does the LT3091EDE#TRPBF have built-in protection features?
Yes, it includes reverse output protection, internal current limit with fold-back, and thermal shutdown with hysteresis.
- What is the package type of the LT3091EDE#TRPBF?
The package type is DFN-14..
- Can the LT3091EDE#TRPBF be used in harsh environments?
Yes, the LT3091MP version is guaranteed over the full -55°C to 150°C operating junction temperature range, making it suitable for harsh environments..
