Analog Devices Inc. LTC1550LIGN#PBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $8.75 | $8.75 |
| 15+ | $8.47 | $127.05 |
| 25+ | $8.29 | $207.25 |
| 50+ | $7.83 | $391.50 |
| 100+ | $6.91 | $691.00 |
| N+ | $1.38 | 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 | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 2.7V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | -1.225V |
| Voltage - Output (Max) | -4.8V |
| Current - Output | 20mA |
| Frequency - Switching | 900kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 16-SSOP (0.154", 3.90mm Width) |
| Supplier Device Package | 16-SSOP |
| ROHS |  |
The LTC1550LIGN#PBF from Analog Devices is a charge pump DC-DC converter specifically designed to generate a negative output voltage. It operates from an input voltage between 2.7V and 5.5V and provides an adjustable output from -1.225V to -4.8V, with a maximum output current of 20mA. The device switches at 900kHz, allowing for small external capacitors. Housed in a 16-SSOP package, it is ideal for generating negative rails for op-amps, LCD contrast, and RF biasing.
- Negative Voltage Generation: Simplifies the creation of a negative rail from a positive supply, eliminating the need for a transformer.
- Low Noise: Charge pump design with 900kHz switching minimizes ripple, suitable for sensitive analog circuits.
- Adjustable Output: Output voltage can be set precisely from -1.225V to -4.8V to meet specific circuit requirements.
- Compact and Efficient: No inductor required, saving board space and reducing EMI.
Negative Rail Generation for Op-Amps
Generate a negative supply rail for operational amplifiers in single-supply systems. The LTC1550LIGN provides a clean, low-noise negative voltage, enabling true bipolar operation.
Bias for GaAs FETs and RF Circuits
Provide a negative gate bias voltage for Gallium Arsenide (GaAs) field-effect transistors (FETs) in RF amplifiers and switches, ensuring proper biasing and linearity.
LCD Contrast Control
Adjust the negative voltage used for LCD contrast in displays. The adjustable output range from -1.225V to -4.8V allows fine-tuning of the display's visual performance.
Sensor and ADC Negative Supplies
Power negative-rail sensors or provide a negative reference for analog-to-digital converters (ADCs) in precision measurement systems.
Portable Audio Equipment
Create a negative supply for audio codecs or headphone amplifiers, improving dynamic range and eliminating the need for DC-blocking capacitors.
Battery-Powered Instrumentation
Generate a negative rail from a positive battery supply in handheld meters or data loggers, enabling the use of dual-supply analog components.
- Q: What type of converter is the LTC1550LIGN#PBF?
- A: It is a charge pump DC-DC converter that generates a negative output voltage.
- Q: What is the input voltage range?
- A: The input voltage range is from 2.7V to 5.5V.
- Q: What is the output voltage range?
- A: The output voltage is adjustable from -1.225V to -4.8V.
- 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 a 16-SSOP package.
LTC1550LIGN#PBF.pdf
- Q: What type of converter is the LTC1550LIGN#PBF?
- A: It is a charge pump DC-DC converter that generates a negative output voltage.
- Q: What is the input voltage range?
- A: The input voltage range is from 2.7V to 5.5V.
- Q: What is the output voltage range?
- A: The output voltage is adjustable from -1.225V to -4.8V.
- 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 a 16-SSOP package.
