Analog Devices Inc. LT1949ES8#TRPBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $16.00 | $16.00 |
| 15+ | $3.68 | $55.20 |
| 25+ | $3.60 | $90.00 |
| 50+ | $3.40 | $170.00 |
| 100+ | $3.00 | $300.00 |
| N+ | $0.60 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Analog Devices Inc. |
| Product Series | |
| Packaging | Tape & Reel (TR) | |
| 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 Analog Devices LT1949ES8 is a versatile boost and SEPIC DC-DC converter designed for low-power applications. It operates from an input voltage as low as 1.7V up to 12V, and can generate output voltages from 1.7V to 28V. The internal 1A switch enables efficient power conversion at a fixed 600kHz switching frequency, allowing the use of small, low-profile inductors and capacitors. Housed in a compact 8-SOIC package, this converter is ideal for battery-powered devices, LCD bias supplies, and automotive sensor applications where space and efficiency are critical.
- Low Input Startup: Starts from just 1.7V, enabling operation from single-cell batteries and deep-discharge conditions.
- High Output Voltage Capability: Supports outputs up to 28V, making it suitable for LCD bias and LED applications.
- Fixed 600kHz Frequency: Allows for small external components and predictable EMI filtering, simplifying PCB design.
- SEPIC Flexibility: Can be configured as a SEPIC to generate negative or non-inverted outputs, increasing design versatility.
Battery-Powered Portable Devices
With a low 1.7V startup, this boost converter can generate 3.3V or 5V rails from a single alkaline or NiMH cell, maximizing battery life in handheld instruments.
LCD Bias Supplies
The LT1949ES8 can produce up to 28V for LCD backlight and bias supplies, ideal for small displays in industrial and consumer electronics.
SEPIC for Regulated Negative Outputs
In SEPIC configuration, it provides a regulated negative rail (e.g., -5V) from a positive input, useful for op-amp supplies in precision analog circuits.
Automotive Sensor Power
Operating from a 12V car battery (down to 1.7V during cranking), this converter boosts to 5V for sensors and microcontrollers, ensuring operation during start-stop events.
LED Drivers
The 600kHz fixed frequency and 1A switch make it suitable for driving high-brightness LEDs in series from a low-voltage source, with accurate current control.
Networking Peripherals
For PoE (Power over Ethernet) devices, this boost converter steps up 5V to 12V or 24V for auxiliary equipment, with a small footprint.
- Q: What type of converter is the LT1949ES8?
- A: It is a Boost and SEPIC DC-DC converter, capable of stepping up voltage or providing an inverted output.
- 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 package.
LT1949ES8#TRPBF.pdf
- Q: What type of converter is the LT1949ES8?
- A: It is a Boost and SEPIC DC-DC converter, capable of stepping up voltage or providing an inverted output.
- 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 package.
