LTC1682
LTC1682
PRODUCTIONDoubler Charge Pumps with Low Noise Linear Regulator
- Part Models
- 24
- 1ku List Price
- Starting From $3.14
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Overview
- Low Output Noise: 60µVRMS (100kHz BW)
- Adjustable or Fixed Boosted Output
- Adjustable Output Voltage Range: 2.5V to 5.5V
- Fixed Output Voltages: 3.3V, 5V
- Wide Input Voltage Range: 1.8V to 4.4V
- Uses Small Ceramic Capacitors
- No Inductors Required
- Output Current up to 50mA
- 550kHz Switching Frequency
- Low Operating Current: 150µA
- Low Shutdown Current: 1µA
- Internal Thermal Shutdown and Current Limiting
- Available in 8-Pin MSOP and SO Packages
The LTC1682/LTC1682-3.3/LTC1682-5 are doubler charge pumps with an internal low noise, low dropout (LDO) linear regulator. These parts are designed to provide a low noise boosted supply voltage for powering noise sensitive devices such as high frequency VCOs in wireless applications.
An internal doubler charge pump converts a 1.8V to 4.4V input to a boosted output, while the internal LDO regulator converts the boosted voltage to a low noise regulated output. The adjustable version allows the user to set VOUT via external resistors connected to FB. The regulator is capable of supplying up to 50mA of output current. Shutdown reduces the supply current to < 5µA, removes the load from VIN by disabling the regulator and discharges VOUT to ground through a 100Ω switch.
The LTC1682 LDO regulator is stable with only 2µF on the output. Small ceramic capacitors can be used, reducing PC board area.
The LTC1682/LTC1682-3.3/LTC1682-5 are short-circuit and over temperature protected. The parts are available in 8-pin MSOP and SO packages.
Applications
- VCO Power Supplies in Cellular Phones
- 2-Way Pagers
- Wireless PCMCIA Cards
- Portable Medical Instruments
- Low Power Data Acquisition
- Remote Transmitters
Documentation
Data Sheet 1
User Guide 2
Design Note 1
Technical Articles 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 |
|---|---|---|---|
| LTC1682CMS8#PBF | 8-Lead MSOP | ||
| LTC1682CMS8#TRPBF | 8-Lead MSOP | ||
| LTC1682CMS8-3.3#PBF | 8-Lead MSOP | ||
| LTC1682CMS8-3.3#TRPBF | 8-Lead MSOP | ||
| LTC1682CMS8-5#PBF | 8-Lead MSOP | ||
| LTC1682CMS8-5#TRPBF | 8-Lead MSOP | ||
| LTC1682CS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1682CS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1682CS8-3.3#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1682CS8-3.3#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1682CS8-5#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1682CS8-5#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1682IMS8#PBF | 8-Lead MSOP | ||
| LTC1682IMS8#TRPBF | 8-Lead MSOP | ||
| LTC1682IMS8-3.3#PBF | 8-Lead MSOP | ||
| LTC1682IMS8-3.3#TRPBF | 8-Lead MSOP | ||
| LTC1682IMS8-5#PBF | 8-Lead MSOP | ||
| LTC1682IMS8-5#TRPBF | 8-Lead MSOP | ||
| LTC1682IS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1682IS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1682IS8-3.3#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1682IS8-3.3#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1682IS8-5#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1682IS8-5#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) |
||
| LTC1682CMS8#PBF | PRODUCTION | |
| LTC1682CMS8#TRPBF | PRODUCTION | |
| LTC1682CMS8-3.3#PBF | PRODUCTION | |
| LTC1682CMS8-3.3#TRPBF | PRODUCTION | |
| LTC1682CMS8-5#PBF | PRODUCTION | |
| LTC1682CMS8-5#TRPBF | PRODUCTION | |
| LTC1682IMS8#PBF | PRODUCTION | |
| LTC1682IMS8#TRPBF | PRODUCTION | |
| LTC1682IMS8-3.3#PBF | PRODUCTION | |
| LTC1682IMS8-3.3#TRPBF | PRODUCTION | |
| LTC1682IMS8-5#PBF | PRODUCTION | |
| LTC1682IMS8-5#TRPBF | PRODUCTION | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC1682CMS8#PBF | PRODUCTION | |
| LTC1682CMS8#TRPBF | PRODUCTION | |
| LTC1682CMS8-3.3#PBF | PRODUCTION | |
| LTC1682CMS8-3.3#TRPBF | PRODUCTION | |
| LTC1682CMS8-5#PBF | PRODUCTION | |
| LTC1682CMS8-5#TRPBF | PRODUCTION | |
| LTC1682IMS8#PBF | PRODUCTION | |
| LTC1682IMS8#TRPBF | PRODUCTION | |
| LTC1682IMS8-3.3#PBF | PRODUCTION | |
| LTC1682IMS8-3.3#TRPBF | PRODUCTION | |
| LTC1682IMS8-5#PBF | PRODUCTION | |
| LTC1682IMS8-5#TRPBF | PRODUCTION | |
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LTC1682CS8#PBF | PRODUCTION | |
| LTC1682CS8#TRPBF | PRODUCTION | |
| LTC1682CS8-3.3#PBF | PRODUCTION | |
| LTC1682CS8-3.3#TRPBF | PRODUCTION | |
| LTC1682CS8-5#PBF | PRODUCTION | |
| LTC1682CS8-5#TRPBF | PRODUCTION | |
| LTC1682IS8#PBF | PRODUCTION | |
| LTC1682IS8#TRPBF | PRODUCTION | |
| LTC1682IS8-3.3#PBF | PRODUCTION | |
| LTC1682IS8-3.3#TRPBF | PRODUCTION | |
| LTC1682IS8-5#PBF | PRODUCTION | |
| LTC1682IS8-5#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
||
| LTC1682CS8#PBF | PRODUCTION | |
| LTC1682CS8#TRPBF | PRODUCTION | |
| LTC1682CS8-3.3#PBF | PRODUCTION | |
| LTC1682CS8-3.3#TRPBF | PRODUCTION | |
| LTC1682CS8-5#PBF | PRODUCTION | |
| LTC1682CS8-5#TRPBF | PRODUCTION | |
| LTC1682IS8#PBF | PRODUCTION | |
| LTC1682IS8#TRPBF | PRODUCTION | |
| LTC1682IS8-3.3#PBF | PRODUCTION | |
| LTC1682IS8-3.3#TRPBF | PRODUCTION | |
| LTC1682IS8-5#PBF | PRODUCTION | |
| LTC1682IS8-5#TRPBF | PRODUCTION | |
|
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LTC1682CS8#PBF | PRODUCTION | |
| LTC1682CS8#TRPBF | PRODUCTION | |
| LTC1682CS8-3.3#PBF | PRODUCTION | |
| LTC1682CS8-3.3#TRPBF | PRODUCTION | |
| LTC1682CS8-5#PBF | PRODUCTION | |
| LTC1682CS8-5#TRPBF | PRODUCTION | |
| LTC1682IS8#PBF | PRODUCTION | |
| LTC1682IS8#TRPBF | PRODUCTION | |
| LTC1682IS8-3.3#PBF | PRODUCTION | |
| LTC1682IS8-3.3#TRPBF | PRODUCTION | |
| LTC1682IS8-5#PBF | PRODUCTION | |
| LTC1682IS8-5#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:
- LTC1682
- LTC1682-3.3
- LTC1682-5
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.
Evaluation Kits
LTC1682CMS8 | White LED Driver, 3.0V to 4.2V Input, 75mA Output (5 White LEDs)
Resources
LTC1682CMS8 | Doubler Charge Pump with Linear Regulator, Adjustable, 1.8 to 4.4VIN, 2.5 to 5.5VOUT @ 50mA
Resources
LTC1682CMS8-5 | Doubler Charge Pump with Linear Regulator, Fixed, 2.7 to 4.4VIN, 5.0VOUT @ 50mA
Resources
LTC1682CMS8-3.3 | Doubler Charge Pump with Linear Regulator, Fixed, 2.0 to 4.4VIN, 3.3VOUT @ 50mA
Resources
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