Features and Benefits
- Ultralow Power: Typical Operating ICC = 6µA
- Short-Circuit/Thermal Protected
- Regulated 5V ±4% Output Voltage
- 2.7V to 5V Input Range
- No Inductors
- Very Low ICC in Shutdown: <1µA
- Output Current:
- 10mA (VIN ≥ 2.7V)
- 20mA (VIN ≥ 3V)
- Shutdown Disconnects Load from VIN
- Internal Oscillator: 700kHz
- Compact Application Circuit (<0.1 in2)
- 8-Pin MSOP and SO Packages
The LTC1522 is a micropower charge pump DC/DC converter that produces a regulated 5V output from a 2.7V to 5V input supply. Extremely low supply current (6µA typical with no load, <1µA in shutdown) and low external parts count (one 0.22µF flying capacitor and two 10µF capacitors at VIN and VOUT) make the LTC1522 ideally suited for small, light load battery-powered applications. Typical efficiency (VIN = 3V) exceeds 75% with load currents between 50µA and 20mA. Modulating the SHDN pin keeps the typical efficiency above 75% with load currents all the way down to 10µA.
The LTC1522 has thermal shutdown and can survive a continuous short from VOUT to GND. In shutdown the load is disconnected from VIN. The part is available in 8-pin MSOP and SO packages. The LTC1522 is pin compatible with the LTC1516 in applications where VIN ≥ 2.7V and IOUT ≤ 20mA.
- SIM Interface Supplies for GSM Cellular Telephones
- Li-Ion Battery Backup Supplies
- Local 3V to 5V Conversion
- Smart Card Readers
- PCMCIA Local 5V Supplies
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Tools & Simulations
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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|LTC1522CMS8#PBF||Material Declaration||Reliability Data||8-Lead MSOP|
|LTC1522CMS8#TRPBF||Material Declaration||Reliability Data||8-Lead MSOP|
|LTC1522CS8#PBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|LTC1522CS8#TRPBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|LTC1522IS8#PBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|LTC1522IS8#TRPBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|Wafer Fabrication Data||R302 Reliability Data|
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Buy Now Pricing
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