Analog Devices Inc. LTC1522CS8#PBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $7.29 | $7.29 |
| 15+ | $7.06 | $105.90 |
| 25+ | $6.90 | $172.50 |
| 50+ | $6.52 | $326.00 |
| 100+ | $5.75 | $575.00 |
| N+ | $1.15 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Analog Devices Inc. |
| Product Series | |
| Packaging | Tube | |
| Function | Step-Up |
| Output Configuration | Positive |
| Topology | Charge Pump |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 2.7V |
| Voltage - Input (Max) | 5V |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage - Output (Max) | - |
| Current - Output | 20mA |
| Frequency - Switching | 700kHz |
| 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 LTC1522CS8#PBF from Analog Devices is a low-noise, fixed 5V output charge pump DC-DC converter. It operates from an input voltage between 2.7V and 5V and delivers up to 20mA of output current. With a 700kHz switching frequency, it allows for the use of tiny ceramic capacitors, minimizing board space. Housed in a standard 8-SOIC package, it is a simple and reliable solution for generating a regulated 5V rail in battery-powered and portable applications.
- Inductorless Design: Uses only small ceramic capacitors, reducing cost and board space compared to inductive converters.
- Fixed 5V Output: Simplifies design for legacy 5V logic or sensor interfaces without requiring external feedback resistors.
- 700kHz Switching Frequency: Enables the use of small capacitors and reduces output ripple.
- Wide Input Range (2.7V-5V): Compatible with 3.3V and 5V rails as well as single-cell Li-ion batteries.
Battery-Powered Backup Supplies
For systems with a 2.7V to 5V battery, the LTC1522 generates a regulated 5V rail for RTCs, SRAMs, or microcontrollers during main power loss, ensuring data retention.
Flash Memory Programming
In portable programmers, the 5V output at 20mA is sufficient to program small flash or EEPROM devices, eliminating the need for a separate boost converter.
Sensor Interface Circuits
Many precision sensors require a stable 5V bias supply. The low-noise charge pump operation of the LTC1522 provides a clean, regulated voltage for analog front-ends.
Portable Medical Devices
For glucose meters or pulse oximeters, the 700kHz switching frequency allows for small external capacitors, reducing the overall footprint of the power supply section.
Industrial Isolated Barriers
In intrinsically safe circuits, the charge pump can generate a local 5V rail from a lower voltage source, simplifying isolation barrier design.
Consumer Electronics
For legacy 5V logic or interface chips in a 3.3V system, this charge pump provides a simple, cost-effective solution without requiring an inductor.
- Q: What type of converter is the LTC1522CS8#PBF?
- A: It is a charge pump DC-DC converter.
- Q: What is the input voltage range?
- A: The input voltage range is from 2.7V to 5V.
- Q: What is the output voltage?
- A: It provides a fixed 5V output.
- Q: What is the maximum output current?
- A: It can deliver up to 20mA.
- Q: What is the switching frequency?
- A: The switching frequency is 700kHz.
- Q: What package is available?
- A: It comes in an 8-SOIC package.
LTC1522CS8#PBF.pdf
- Q: What type of converter is the LTC1522CS8#PBF?
- A: It is a charge pump DC-DC converter.
- Q: What is the input voltage range?
- A: The input voltage range is from 2.7V to 5V.
- Q: What is the output voltage?
- A: It provides a fixed 5V output.
- Q: What is the maximum output current?
- A: It can deliver up to 20mA.
- Q: What is the switching frequency?
- A: The switching frequency is 700kHz.
- Q: What package is available?
- A: It comes in an 8-SOIC package.
