LTC1522
LTC1522
PRODUCTIONMicropower, Regulated 5V Charge Pump DC/DC Converter
- Part Models
- 6
- 1ku List Price
- Starting From $3.24
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Overview
- 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.
Applications
- SIM Interface Supplies for GSM Cellular Telephones
- Li-Ion Battery Backup Supplies
- Local 3V to 5V Conversion
- Smart Card Readers
- PCMCIA Local 5V Supplies
Documentation
Data Sheet 1
Spec Notice 1
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC1522CMS8#PBF | 8-Lead MSOP | ||
| LTC1522CMS8#TRPBF | 8-Lead MSOP | ||
| LTC1522CS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1522CS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1522IS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1522IS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0004 Epoxy Change from Henkel 8290 to 8290A for MSOP (3) |
||
| LTC1522CMS8#PBF | PRODUCTION | |
| LTC1522CMS8#TRPBF | PRODUCTION | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC1522CMS8#PBF | PRODUCTION | |
| LTC1522CMS8#TRPBF | PRODUCTION | |
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LTC1522CS8#PBF | PRODUCTION | |
| LTC1522CS8#TRPBF | PRODUCTION | |
| LTC1522IS8#PBF | PRODUCTION | |
| LTC1522IS8#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
||
| LTC1522CS8#PBF | PRODUCTION | |
| LTC1522CS8#TRPBF | PRODUCTION | |
| LTC1522IS8#PBF | PRODUCTION | |
| LTC1522IS8#TRPBF | PRODUCTION | |
|
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LTC1522CS8#PBF | PRODUCTION | |
| LTC1522CS8#TRPBF | PRODUCTION | |
| LTC1522IS8#PBF | PRODUCTION | |
| LTC1522IS8#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LTC1522
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
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