Analog Devices Inc. LTC1550IGN#TRPBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $19.75 | $19.75 |
| 15+ | $4.54 | $68.10 |
| 25+ | $4.45 | $111.25 |
| 50+ | $4.20 | $210.00 |
| 100+ | $3.71 | $371.00 |
| N+ | $0.74 | 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 | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4.5V |
| Voltage - Input (Max) | 6.5V |
| Voltage - Output (Min/Fixed) | -1.24V |
| Voltage - Output (Max) | -6.1V |
| Current - Output | 10mA |
| 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 LTC1550IGN from Analog Devices is a charge pump DC-DC converter specifically designed to generate a regulated negative output voltage. It operates from a positive 4.5V to 6.5V input and provides an adjustable output from -1.24V to -6.1V, with a maximum output current of 10mA. Operating at a fixed 900kHz switching frequency, it requires only small external capacitors. Housed in a 16-SSOP package, this converter is ideal for generating negative rails for op-amps, LCD bias, and other low-power analog applications.
- Simple Negative Voltage Generation: Provides a straightforward solution for generating a negative rail from a positive supply without the need for inductors or transformers.
- Low Noise Output: The charge pump architecture with 900kHz switching produces a low-noise output, suitable for sensitive analog circuits.
- Adjustable Output Voltage: The output can be set from -1.24V to -6.1V, offering flexibility for various biasing requirements.
- Compact and Efficient: The 16-SSOP package and inductor-less design result in a small, efficient solution for low-power negative supply needs.
Negative Rail Generation for Op-Amps
Many precision analog circuits, such as operational amplifiers and instrumentation amplifiers, require a negative supply rail. The LTC1550IGN can generate a clean, regulated negative voltage from a positive 5V supply, eliminating the need for a separate negative DC-DC converter or a bulky transformer.
Bias Supply for LCD Displays
Some LCD display panels require a negative bias voltage for the display driver. The LTC1550IGN's adjustable output (down to -6.1V) and low noise characteristics make it suitable for biasing LCD panels in portable instruments and industrial equipment.
Sensor and Transducer Excitation
Certain sensors, such as some types of photodiodes or MEMS devices, require a negative bias voltage for optimal operation. The LTC1550IGN provides a compact and efficient solution to generate this bias from a positive supply rail, ensuring accurate and stable sensor readings.
Audio Equipment Power Supply
In audio applications, a negative rail is often needed for headphone amplifiers or audio codecs to handle AC signals without distortion. The LTC1550IGN can provide a low-noise negative supply, improving the audio quality in portable players, mixers, and other audio devices.
Battery-Powered Instrumentation
For battery-powered devices that need a negative rail, the LTC1550IGN's low quiescent current and high efficiency at light loads help conserve battery life. Its small 16-SSOP package makes it easy to integrate into portable measurement tools and data loggers.
- Q: What type of converter is the LTC1550IGN?
- A: It is a charge pump DC-DC converter, specifically designed to generate a negative output voltage.
- Q: What is the input voltage range?
- A: The input voltage range is from 4.5V to 6.5V.
- Q: What is the output voltage range?
- A: It produces a negative output voltage from -1.24V to -6.1V, which is adjustable.
- Q: What is the maximum output current?
- A: The maximum output current is 10mA, making it suitable for low-power applications.
- Q: What is the switching frequency?
- A: It operates at a fixed 900kHz switching frequency.
- Q: What package is available?
- A: It is available in a 16-SSOP package.
LTC1550IGN#TRPBF.pdf
- Q: What type of converter is the LTC1550IGN?
- A: It is a charge pump DC-DC converter, specifically designed to generate a negative output voltage.
- Q: What is the input voltage range?
- A: The input voltage range is from 4.5V to 6.5V.
- Q: What is the output voltage range?
- A: It produces a negative output voltage from -1.24V to -6.1V, which is adjustable.
- Q: What is the maximum output current?
- A: The maximum output current is 10mA, making it suitable for low-power applications.
- Q: What is the switching frequency?
- A: It operates at a fixed 900kHz switching frequency.
- Q: What package is available?
- A: It is available in a 16-SSOP package.
