Analog Devices Inc. LTC1550LCMS8-4.1#TRPBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $13.85 | $13.85 |
| 15+ | $3.18 | $47.70 |
| 25+ | $3.11 | $77.75 |
| 50+ | $2.94 | $147.00 |
| 100+ | $2.60 | $260.00 |
| N+ | $0.52 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Analog Devices Inc. |
| Product Series | |
| Packaging | Tape & Reel (TR) | |
| Function | Step-Up/Step-Down |
| Output Configuration | Negative |
| Topology | Charge Pump |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4.5V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | -4.1V |
| 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 LTC1550L-4.1 is a charge pump DC-DC converter from Analog Devices, designed to generate a fixed -4.1V output from a 4.5V to 5.5V input. It provides up to 20mA of output current with a 900kHz switching frequency, allowing for compact external components. The device is available in an 8-MSOP/TSSOP package, suitable for space-limited designs. This converter is ideal for generating negative bias rails in LCD displays, optical sensors, and precision analog circuits operating from a 5V supply.
- Fixed -4.1V Output: Provides a precise negative rail for 5V systems without external adjustment.
- 900kHz Switching Frequency: Enables small ceramic capacitors, reducing PCB footprint.
- Narrow Input Range (4.5V-5.5V): Optimized for standard 5V logic rails, ensuring reliable operation.
- Compact MSOP Package: Fits easily into dense PCB layouts for portable and industrial equipment.
Negative Rail for Precision Analog
The LTC1550L-4.1 generates a fixed -4.1V output from a 5V supply, ideal for powering high-performance op-amps and voltage references in test equipment.
LCD Contrast Control
In small LCD panels, the -4.1V output provides the negative bias voltage needed for VCOM or gate driver circuits, ensuring consistent display performance.
Optical Sensor Biasing
For avalanche photodiodes (APDs) in optical receivers, this charge pump supplies a stable -4.1V bias from a 5V rail, improving sensitivity in fiber-optic links.
Industrial Process Control
In 4-20mA transmitters operating from 5V, the LTC1550L-4.1 provides the negative supply for precision analog front-ends, enhancing measurement accuracy.
Audio Codec Power
For high-end portable audio codecs requiring a negative supply, this converter delivers a clean -4.1V rail from a USB 5V source, reducing noise in audio paths.
- Q: What type of converter is the LTC1550L-4.1?
- A: It is a Charge Pump DC-DC converter (inverting).
- Q: What is the input voltage range?
- A: The input voltage range is 4.5V to 5.5V.
- Q: What is the output voltage?
- A: The output voltage is fixed at -4.1V.
- 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 is available in an 8-TSSOP or 8-MSOP package (3.00mm width).
LTC1550LCMS8-4.1#TRPBF.pdf
- Q: What type of converter is the LTC1550L-4.1?
- A: It is a Charge Pump DC-DC converter (inverting).
- Q: What is the input voltage range?
- A: The input voltage range is 4.5V to 5.5V.
- Q: What is the output voltage?
- A: The output voltage is fixed at -4.1V.
- 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 is available in an 8-TSSOP or 8-MSOP package (3.00mm width).
