Linear Technology LTC1515CS8-3/5#PBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $25.44 | $25.44 |
| 15+ | $5.85 | $87.75 |
| 25+ | $5.72 | $143.00 |
| 50+ | $5.41 | $270.50 |
| 100+ | $4.77 | $477.00 |
| N+ | $0.95 | 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 |
| Topology | Charge Pump |
| Output Type | Programmable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 2V |
| Voltage - Input (Max) | 10V |
| Voltage - Output (Min/Fixed) | 3V, 5V |
| Voltage - Output (Max) | - |
| Current - Output | 50mA |
| Frequency - Switching | 650kHz |
| 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 LTC1515CS8-3/5 is a charge pump DC-DC converter from Linear Technology, offering a selectable 3V or 5V output. It operates from a 2V to 10V input and delivers up to 50mA. The fixed 650kHz switching frequency allows the use of small ceramic capacitors, eliminating the need for inductors. Packaged in an 8-pin SOIC, it is ideal for low-power applications such as memory backup, portable instruments, and sensor biasing. Its simple design and low EMI make it a reliable choice for noise-sensitive circuits.
- Inductor-Free Design: Uses only capacitors, reducing EMI and simplifying PCB layout.
- Selectable 3V/5V Output: Provides flexibility for mixed-voltage systems without external resistors.
- Wide Input Range (2V-10V): Works with various battery chemistries and supply rails.
- Fixed 650kHz Frequency: Enables small external capacitors, saving board space.
- Low Quiescent Current: Extends battery life in always-on applications.
Battery-Powered Memory Backup
For SRAM or RTC backup circuits, the LTC1515CS8-3/5 provides a regulated 3V or 5V from a 2V-10V battery, ensuring data retention during main power loss.
Portable Instrumentation
In handheld meters, the charge pump generates a stable 5V rail from a 3V battery, powering op-amps and ADCs without the EMI of an inductor-based converter.
Low-Power Sensor Systems
For sensors requiring 3V or 5V bias, this charge pump offers a simple, low-noise solution with only a few external capacitors.
Telecom Line Cards
With a 5V input, it can generate a 3V rail for logic circuits, or with a 3.3V input, boost to 5V for interface drivers, all within a small SOIC footprint.
Medical Implantable Devices
The low quiescent current and small size make it suitable for hearing aids or pacemakers, where battery life and space are critical.
Consumer Electronics
For devices with mixed-voltage logic (e.g., 3V MCU and 5V EEPROM), the LTC1515 provides a simple voltage conversion without inductors, reducing cost and board area.
- Q: What type of converter is the LTC1515CS8-3/5?
- A: It is a charge pump DC-DC converter, not an inductor-based buck or boost.
- Q: What is the input voltage range?
- A: The input voltage range is from 2V to 10V.
- Q: What are the output voltage options?
- A: It provides selectable outputs of 3V or 5V.
- Q: What is the maximum output current?
- A: The maximum output current is 50mA.
- Q: What is the switching frequency?
- A: The switching frequency is fixed at 650kHz.
- Q: What package is available?
- A: It comes in an 8-pin SOIC package (0.154" width).
LTC1515CS8-3/5#PBF.pdf
- Q: What type of converter is the LTC1515CS8-3/5?
- A: It is a charge pump DC-DC converter, not an inductor-based buck or boost.
- Q: What is the input voltage range?
- A: The input voltage range is from 2V to 10V.
- Q: What are the output voltage options?
- A: It provides selectable outputs of 3V or 5V.
- Q: What is the maximum output current?
- A: The maximum output current is 50mA.
- Q: What is the switching frequency?
- A: The switching frequency is fixed at 650kHz.
- Q: What package is available?
- A: It comes in an 8-pin SOIC package (0.154" width).
