Linear Technology LT1949ES8#PBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $18.48 | $18.48 |
| 15+ | $4.25 | $63.75 |
| 25+ | $4.16 | $104.00 |
| 50+ | $3.93 | $196.50 |
| 100+ | $3.47 | $347.00 |
| N+ | $0.69 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Linear Technology |
| Product Series | |
| Packaging | Bulk | |
| Function | Step-Up, Step-Up/Step-Down |
| Output Configuration | Positive |
| Topology | Boost, SEPIC |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 1.7V |
| Voltage - Input (Max) | 12V |
| Voltage - Output (Min/Fixed) | 1.7V |
| Voltage - Output (Max) | 28V |
| Current - Output | 1A (Switch) |
| Frequency - Switching | 600kHz |
| 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 LT1949ES8#PBF from Linear Technology is a versatile Boost and SEPIC DC-DC converter IC designed for applications requiring a regulated output voltage higher than the input. It operates from an input voltage between 1.7V and 12V and can deliver an output voltage up to 28V. The internal 1A switch allows for output currents suitable for a wide range of portable and industrial applications. With a fixed 600kHz switching frequency, this converter enables the use of small external components, resulting in a compact power solution. Its high efficiency and wide input range make it ideal for battery-powered devices, industrial bias supplies, and LED drivers.
- Wide Input Voltage Range (1.7V to 12V): Supports operation from single-cell batteries and various unregulated supplies, enhancing design flexibility.
- Versatile Boost/SEPIC Topology: Allows output voltages above, below, or equal to the input, simplifying designs for fluctuating power sources.
- High Switching Frequency (600kHz): Enables the use of small, low-cost inductors and capacitors, reducing board space and overall solution size.
- High Output Voltage Capability (up to 28V): Suitable for biasing, LED drivers, and other applications requiring elevated voltages.
Battery-Powered Portable Devices
With a wide 1.7V to 12V input range and high-efficiency boost topology, the LT1949ES8#PBF is ideal for generating regulated higher voltages from single-cell or multi-cell batteries in handheld instruments and portable electronics.
SEPIC Converters for Unregulated Supplies
The SEPIC capability allows the output voltage to be above, below, or equal to the input. This is useful in systems powered by unregulated sources like solar panels or loosely regulated wall adapters, ensuring a stable output regardless of input fluctuations.
Local Bias Supplies in Networking Equipment
Its 600kHz switching frequency enables the use of small, low-profile inductors and capacitors, making it suitable for point-of-load bias supplies in space-constrained networking and telecom boards.
Automotive Sensor Interfaces
The 1.7V minimum input allows operation during cold-crank conditions. The boost converter can generate the higher voltages needed for automotive sensor biasing and interface circuits from a low battery voltage.
Industrial Control Systems
In industrial environments with 5V or 12V rails, the LT1949ES8#PBF can step up to 28V to power actuators, relays, or analog front-ends, providing a compact and efficient power solution.
White LED Drivers
The boost topology with a 1A switch can drive strings of white LEDs in backlighting applications, providing a constant current source with high efficiency from a low-voltage supply.
- Q: What type of converter is the LT1949ES8#PBF?
- A: It is a Boost and SEPIC DC-DC converter IC from Linear Technology.
- Q: What is the input voltage range?
- A: The input voltage range is from 1.7V to 12V.
- Q: What is the output voltage range?
- A: The output voltage can be set from 1.7V up to 28V.
- Q: What is the maximum switch current?
- A: The maximum switch current is 1A.
- Q: What is the switching frequency?
- A: The switching frequency is fixed at 600kHz.
- Q: What package is available?
- A: It comes in an 8-SOIC (0.154", 3.90mm Width) package.
LT1949ES8#PBF.pdf
- Q: What type of converter is the LT1949ES8#PBF?
- A: It is a Boost and SEPIC DC-DC converter IC from Linear Technology.
- Q: What is the input voltage range?
- A: The input voltage range is from 1.7V to 12V.
- Q: What is the output voltage range?
- A: The output voltage can be set from 1.7V up to 28V.
- Q: What is the maximum switch current?
- A: The maximum switch current is 1A.
- Q: What is the switching frequency?
- A: The switching frequency is fixed at 600kHz.
- Q: What package is available?
- A: It comes in an 8-SOIC (0.154", 3.90mm Width) package.
