Linear Technology LT1173CS8-5#PBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $20.96 | $20.96 |
| 15+ | $9.47 | $142.05 |
| 25+ | $9.26 | $231.50 |
| 50+ | $8.75 | $437.50 |
| 100+ | $7.72 | $772.00 |
| N+ | $1.54 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Linear Technology |
| Product Series | |
| Packaging | Bulk | |
| Function | Step-Up, Step-Down |
| Output Configuration | Positive or Negative |
| Topology | Buck, Boost |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 2V |
| Voltage - Input (Max) | 30V |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage - Output (Max) | - |
| Current - Output | 1.5A (Switch) |
| Frequency - Switching | 23kHz |
| 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 LT1173CS8-5#PBF is a flexible DC-DC converter from Linear Technology, configurable as a buck or boost regulator. It accepts an input from 2V to 30V and provides a fixed 5V output. The internal 1.5A switch and low 23kHz switching frequency make it highly efficient for battery-powered and industrial applications. This converter is ideal for portable instruments, automotive sensors, and telecom systems.
- Buck or Boost Flexibility: One device can be used for step-up or step-down applications, simplifying inventory.
- Ultra-Wide Input Range: The 2V to 30V range covers everything from single-cell batteries to 24V industrial rails.
- High Efficiency: The low 23kHz frequency reduces switching losses, making it ideal for battery-operated devices.
- Simple Fixed Output: The fixed 5V output eliminates the need for external feedback resistors.
Battery-Powered Equipment
For devices running from 2-4 cells, the LT1173CS8-5#PBF can boost a low battery voltage to a regulated 5V. Its low 23kHz frequency ensures high efficiency, maximizing battery life.
Automotive Sensors
In automotive systems, this converter can step down a 12V or 24V supply to 5V for sensors and control modules. The wide 2V-30V input range handles load dump and cold-crank transients.
Industrial Control
Use it in industrial controllers to generate a 5V logic supply from a 24V bus. The buck configuration provides a stable, efficient solution for factory automation.
Portable Instruments
Power handheld meters and test equipment from a 9V battery. The boost mode delivers a regulated 5V, while the low quiescent current extends standby time.
Telecom Line Cards
In telecom equipment, the LT1173CS8-5#PBF can step down from a -48V rail (using appropriate external components) or from a local 12V supply to power logic circuits.
- Q: What type of converter is the LT1173CS8-5#PBF?
- A: It is a versatile DC-DC converter that can be configured as either a step-down (Buck) or step-up (Boost) regulator.
- Q: What is the input voltage range?
- A: The input voltage range is from 2V to 30V, making it suitable for a wide range of power sources.
- Q: What is the maximum switch current?
- A: The internal switch can handle up to 1.5A, providing moderate output power capability.
- Q: What is the switching frequency?
- A: It operates at a low 23kHz switching frequency, which minimizes switching losses for high efficiency.
- Q: What package is available?
- A: It is available in an 8-pin SOIC package, which is compact and suitable for many PCB designs.
- Q: What type of converter is the LT1173CS8-5#PBF?
- A: It is a versatile DC-DC converter that can be configured as either a step-down (Buck) or step-up (Boost) regulator.
- Q: What is the input voltage range?
- A: The input voltage range is from 2V to 30V, making it suitable for a wide range of power sources.
- Q: What is the maximum switch current?
- A: The internal switch can handle up to 1.5A, providing moderate output power capability.
- Q: What is the switching frequency?
- A: It operates at a low 23kHz switching frequency, which minimizes switching losses for high efficiency.
- Q: What package is available?
- A: It is available in an 8-pin SOIC package, which is compact and suitable for many PCB designs.

LT1173CS8-5#PBF.pdf