Analog Devices Inc. LTC1550LCMS8-2.5#PBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $7.72 | $7.72 |
| 15+ | $7.48 | $112.20 |
| 25+ | $7.32 | $183.00 |
| 50+ | $6.91 | $345.50 |
| 100+ | $6.10 | $610.00 |
| N+ | $1.22 | 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-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Supplier Device Package | 8-MSOP |
| ROHS |  |
The LTC1550LCMS8-2.5#PBF is a precision charge pump inverter from Analog Devices, designed to generate a fixed -2.5V output from a 3.05V to 5.25V input. It delivers up to 20mA of output current with a 900kHz switching frequency, allowing for small external capacitors. Housed in a compact 8-MSOP package, it is ideal for generating negative rails in battery-powered instruments, audio equipment, and LCD bias applications where space and efficiency are critical.
- Fixed Negative Output: Provides a precise -2.5V rail without requiring external feedback resistors, simplifying design.
- Small Solution Size: The 900kHz charge pump uses tiny ceramic capacitors, reducing PCB footprint.
- Low Noise: Charge pump architecture minimizes electromagnetic interference compared to inductive converters.
- Wide Input Compatibility: Accepts 3.05V to 5.25V, making it suitable for standard 3.3V and 5V logic supplies.
Negative Rail Generation for Op-Amps
Generate a -2.5V rail from a positive 3.3V or 5V supply to power operational amplifiers in single-supply systems, enabling dual-supply operation without a transformer.
Battery-Powered Instrumentation
Provides a low-noise negative bias for sensors or DACs in portable instruments. The 900kHz charge pump allows for small ceramic capacitors, minimizing board space.
LCD Bias Supplies
Used to create a negative bias voltage for LCD displays in small handheld devices, ensuring proper contrast and operation from a single positive supply.
Portable Audio Equipment
Supplies a negative rail for audio codecs or amplifiers, improving signal swing and dynamic range in battery-powered audio players.
Data Acquisition Systems
Creates a bipolar supply for analog front-ends in data acquisition, allowing accurate measurement of positive and negative signals from a single positive source.
Low-Power Industrial Sensors
Provides a stable negative reference for industrial sensors that require a bipolar supply, simplifying power design in low-power control loops.
- Q: What type of converter is the LTC1550LCMS8-2.5#PBF?
- A: It is a Charge Pump DC-DC converter, specifically an inverting type.
- Q: What is the input voltage range?
- A: The input voltage range is 3.05V to 5.25V.
- Q: What is the output voltage?
- A: It provides a fixed -2.5V output.
- 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 fixed at 900kHz.
- Q: What package is available?
- A: It comes in an 8-TSSOP or 8-MSOP package.
LTC1550LCMS8-2.5#PBF.pdf
- Q: What type of converter is the LTC1550LCMS8-2.5#PBF?
- A: It is a Charge Pump DC-DC converter, specifically an inverting type.
- Q: What is the input voltage range?
- A: The input voltage range is 3.05V to 5.25V.
- Q: What is the output voltage?
- A: It provides a fixed -2.5V output.
- 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 fixed at 900kHz.
- Q: What package is available?
- A: It comes in an 8-TSSOP or 8-MSOP package.
