Overview
The LT1931AIS5#TRPBF is a high-power inverting DC/DC converter produced by Analog Devices, Inc. This component is part of the LT1931/LT1931A series, which are industry-leading in terms of power density and performance in the SOT-23 package. The LT1931AIS5#TRPBF is designed to provide a negative output voltage from a positive input, making it suitable for various applications requiring low noise and high efficiency.
Key Specifications
| Parameter | Value |
|---|---|
| Switching Frequency | 1.2MHz / 2.2MHz |
| Output Voltage Range | -34V to -1.255V |
| Input Voltage Range | 2.45V to 16V |
| Switch Current Limit | 1A |
| Output Ripple | 1mV-P-P |
| Package Type | TSOT-23-5 |
| Operating Temperature Range | -40°C to 85°C |
| Switch Saturation Voltage (Vcesat) | 0.05V to 0.45V |
Key Features
- Fixed frequency switching to minimize low frequency noise.
- Very low output voltage ripple of 1mV-P-P using ceramic output capacitors.
- High efficiency and low impedance output.
- Dual inductor inverting topology for improved filtering.
- Shutdown pin for power management.
- Small footprint in TSOT-23-5 package.
Applications
- Disk Drive MR Head Bias
- Digital Camera CCD Bias
- LCD Bias
- GaAs FET Bias
- Local Low Noise/Low Impedance Negative Supply
Q & A
- What is the switching frequency of the LT1931AIS5#TRPBF? The switching frequency is 1.2MHz or 2.2MHz.
- What is the output voltage range of the LT1931AIS5#TRPBF? The output voltage range is from -34V to -1.255V.
- What is the maximum switch current limit of the LT1931AIS5#TRPBF? The maximum switch current limit is 1A.
- What is the typical output ripple of the LT1931AIS5#TRPBF? The typical output ripple is 1mV-P-P.
- In what package is the LT1931AIS5#TRPBF available? It is available in the TSOT-23-5 package.
- What is the operating temperature range of the LT1931AIS5#TRPBF? The operating temperature range is from -40°C to 85°C.
- How does the LT1931AIS5#TRPBF manage power? It includes a shutdown pin for power management.
- What are some common applications of the LT1931AIS5#TRPBF? Common applications include disk drive MR head bias, digital camera CCD bias, LCD bias, and GaAs FET bias.
- What is the benefit of the dual inductor inverting topology in the LT1931AIS5#TRPBF? The dual inductor inverting topology improves filtering, reducing both input and output side current noise.
- Is the LT1931AIS5#TRPBF RoHS compliant? Yes, the LT1931AIS5#TRPBF is RoHS compliant.
