Analog Devices Inc. LTC3440EDD#PBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $9.10 | $9.10 |
| 15+ | $8.81 | $132.15 |
| 25+ | $8.62 | $215.50 |
| 50+ | $8.14 | $407.00 |
| 100+ | $7.19 | $719.00 |
| N+ | $1.44 | 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 | Positive |
| Topology | Buck-Boost |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 2.5V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 2.5V |
| Voltage - Output (Max) | 5.5V |
| Current - Output | 600mA |
| Frequency - Switching | 300kHz ~ 2MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 10-WFDFN Exposed Pad |
| Supplier Device Package | 10-DFN (3x3) |
| ROHS |  |
The LTC3440 is a versatile Buck-Boost DC-DC converter from Analog Devices, designed to provide a regulated output voltage from input supplies that may be higher or lower than the output. It operates from an input voltage between 2.5V and 5.5V and delivers up to 600mA of output current. The output voltage is adjustable from 2.5V to 5.5V, making it ideal for battery-powered applications where the cell voltage varies over time. The switching frequency is programmable from 300kHz to 2MHz, allowing designers to optimize efficiency and component size. The device is housed in a compact 10-lead WFDFN package with an exposed pad for thermal management.
- Buck-Boost Topology: Maintains a regulated output even when the input voltage is above or below the output, ideal for battery-powered devices.
- High Efficiency: The 300kHz to 2MHz programmable frequency allows optimization for efficiency or small solution size.
- 600mA Output Current: Suitable for powering microcontrollers, sensors, and RF transceivers in portable devices.
- Compact Package: The 10-lead WFDFN package is ideal for space-constrained wearable and IoT designs.
Battery-Powered Portable Devices
For devices powered by a single Li-Ion cell (3.0V-4.2V), the LTC3440's buck-boost topology maintains a regulated 3.3V output as the battery discharges, maximizing usable battery life.
Handheld Instruments
When powered by two alkaline batteries (2.0V-3.0V), the LTC3440 can boost to 3.3V or buck down to 2.5V, providing a stable supply for precision analog circuits in multimeters and handheld test equipment.
Wireless Sensors
In IoT nodes, the input voltage from a battery or small solar cell can fluctuate. The LTC3440's 600mA output and 2.5V-5.5V range ensure a stable supply for RF transceivers and microcontrollers.
Portable Audio Players
Audio circuits often require both positive and negative rails. The LTC3440 can be configured to generate a regulated output from a varying battery voltage, ensuring consistent audio amplifier performance.
USB-Powered Devices
When powered from a USB port (5V), the LTC3440 can buck down to 3.3V or 2.5V for logic circuits, or boost to 5V when the USB supply drops under load, ensuring reliable operation.
Medical Wearables
Wearable health monitors require compact, efficient power conversion. The LTC3440's small 10-lead DFN package and high-frequency operation (up to 2MHz) allow for tiny external components, ideal for space-constrained designs.
- Q: What type of converter is the LTC3440EDD#PBF?
- A: It is a Buck-Boost DC-DC converter, capable of stepping up or stepping down the input voltage.
- Q: What is the input voltage range?
- A: The input voltage range is from 2.5V to 5.5V.
- Q: What is the output voltage range?
- A: The output voltage can be set from 2.5V to 5.5V.
- Q: What is the maximum output current?
- A: The maximum output current is 600mA.
- Q: What is the switching frequency?
- A: The switching frequency is programmable from 300kHz to 2MHz.
- Q: What package is available?
- A: It is available in a 10-lead WFDFN package with exposed pad.
LTC3440EDD#PBF.pdf
- Q: What type of converter is the LTC3440EDD#PBF?
- A: It is a Buck-Boost DC-DC converter, capable of stepping up or stepping down the input voltage.
- Q: What is the input voltage range?
- A: The input voltage range is from 2.5V to 5.5V.
- Q: What is the output voltage range?
- A: The output voltage can be set from 2.5V to 5.5V.
- Q: What is the maximum output current?
- A: The maximum output current is 600mA.
- Q: What is the switching frequency?
- A: The switching frequency is programmable from 300kHz to 2MHz.
- Q: What package is available?
- A: It is available in a 10-lead WFDFN package with exposed pad.
