Analog Devices Inc. LTC1550LCS8-2.5#PBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $7.12 | $7.12 |
| 15+ | $6.89 | $103.35 |
| 25+ | $6.74 | $168.50 |
| 50+ | $6.37 | $318.50 |
| 100+ | $5.62 | $562.00 |
| N+ | $1.12 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Analog Devices Inc. |
| Product Series | |
| Packaging | Tube | |
| Function | Step-Up/Step-Down |
| Output Configuration | Negative |
| Topology | Charge Pump |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 3.05V |
| Voltage - Input (Max) | 5.25V |
| Voltage - Output (Min/Fixed) | -2.5V |
| Voltage - Output (Max) | - |
| Current - Output | 20mA |
| Frequency - Switching | 900kHz |
| Synchronous Rectifier | No |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SO |
| ROHS |  |
The LTC1550LCS8-2.5#PBF is a charge pump DC-DC converter from Analog Devices that produces a regulated -2.5V output from a 3.05V to 5.25V input. It delivers up to 20mA with a 900kHz switching frequency, enabling compact filter components. The 8-SOIC package suits space-limited designs. Typical applications include negative rails for op-amps, LCD bias, and RF amplifier biasing.
- Negative Output Generation: Simplifies dual-supply designs by creating a -2.5V rail from a positive input.
- High Frequency (900kHz): Reduces external capacitor size, saving board space.
- Regulated Output: Maintains -2.5V accuracy for sensitive analog circuits.
- Wide Input Compatibility: Works with standard 3.3V and 5V logic rails.
Negative Rail for Op-Amps
Generate a -2.5V supply from a positive 3.3V or 5V rail to power dual-supply operational amplifiers in signal conditioning circuits. The 900kHz switching frequency allows small capacitors.
Bias for GaAs FET Amplifiers
Provide the negative gate bias voltage required for GaAs FET power amplifiers in RF transceivers. The low-noise output ensures stable amplifier performance.
LCD Contrast Adjustment
Create a negative bias voltage for LCD displays in portable instruments. The regulated -2.5V output maintains consistent contrast over temperature.
Sensor Excitation
Power bridge sensors and thermocouple amplifiers that require a negative supply for bipolar operation. The 20mA output is adequate for low-power sensing.
Audio Preamplifiers
Supply a negative rail for audio op-amps in portable recording devices, enabling clean signal handling without DC blocking capacitors.
Data Acquisition Systems
Provide a negative reference for ADCs and DACs in multi-channel data acquisition systems, improving dynamic range.
- Q: What type of converter is the LTC1550LCS8-2.5#PBF?
- A: It is a charge pump DC-DC converter that generates a negative -2.5V output.
- Q: What is the input voltage range?
- A: The input voltage range is from 3.05V to 5.25V.
- Q: What is the maximum output current?
- A: The maximum output current is 20mA.
- Q: What is the switching frequency?
- A: The switching frequency is 900kHz.
- Q: What package is available?
- A: It comes in an 8-SOIC package (0.154", 3.90mm Width).
LTC1550LCS8-2.5#PBF.pdf
- Q: What type of converter is the LTC1550LCS8-2.5#PBF?
- A: It is a charge pump DC-DC converter that generates a negative -2.5V output.
- Q: What is the input voltage range?
- A: The input voltage range is from 3.05V to 5.25V.
- Q: What is the maximum output current?
- A: The maximum output current is 20mA.
- Q: What is the switching frequency?
- A: The switching frequency is 900kHz.
- Q: What package is available?
- A: It comes in an 8-SOIC package (0.154", 3.90mm Width).
