LTC3265
LTC3265
RECOMMENDED FOR NEW DESIGNSLow Noise Dual Supply with Boost and Inverting Charge Pumps
- Part Models
- 16
- 1ku List Price
- Starting From $5.76
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Overview
- Boost Charge Pump Generates 2 • VIN_P (VIN_P Range: 4.5V to 16V)
- Inverting Charge Pump Generates –VIN_N (VIN_N Range: 4.5V to 32V)
- Low Noise Positive LDO Post Regulator Up to 50mA
- Low Noise Negative LDO Post Regulator Up to 50mA
- 135μA Quiescent Current in Burst Mode® Operation with Both LDO Regulators On
- 50kHz to 500kHz Programmable Oscillator Frequency
- Stable with Ceramic Capacitors
- Short-Circuit/Thermal Protection
- Low Profile 3mm × 5mm 18-Lead DFN and Thermally Enhanced 20-Lead TSSOP Packages
The LTC3265 is a low noise dual polarity output power supply including a boost charge pump, an inverting charge pump and two low noise positive and negative LDO post regulators. The boost charge pump powers the positive LDO post regulator while the inverting charge pump powers the negative LDO regulator. Each LDO can provide up to 50mA of output current. The LDO output voltages can be adjusted using external resistor dividers.
The charge pumps employ low quiescent current Burst Mode operation or low noise constant frequency mode. During Burst Mode operation, the boost charge pump regulates its output (VOUT +) to 0.94 • 2 • VIN_P while the inverting charge pump regulates its output (VOUT –) to –0.94 • VIN_N. In Burst Mode operation the LTC3265 draws only 135μA of quiescent current with both LDOs on. In constant frequency mode, the boost and inverting charge pumps produce outputs equal to 2 • VIN_P and –VIN_N respectively and operate at a fixed 500kHz or to a programmed value between 50kHz to 500kHz using an external resistor. The LTC3265 is available in low profile 3mm × 5mm × 0.75mm 18-lead DFN and thermally enhanced 20-lead TSSOP packages.
Applications
- Low Noise Bipolar/Inverting Supplies
- Industrial/Instrumentation Low Noise Bias Generators
Documentation
Data Sheet 1
User Guide 1
Technical Articles 2
Product Selector Card 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 |
|---|---|---|---|
| LTC3265EDHC#PBF | 18-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3265EDHC#TRPBF | 18-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3265EFE#PBF | 20-Lead TSSOP w/ EP | ||
| LTC3265EFE#TRPBF | 20-Lead TSSOP w/ EP | ||
| LTC3265HDHC#PBF | 18-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3265HDHC#TRPBF | 18-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3265HFE#PBF | 20-Lead TSSOP w/ EP | ||
| LTC3265HFE#TRPBF | 20-Lead TSSOP w/ EP | ||
| LTC3265IDHC#PBF | 18-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3265IDHC#TRPBF | 18-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3265IFE#PBF | 20-Lead TSSOP w/ EP | ||
| LTC3265IFE#TRPBF | 20-Lead TSSOP w/ EP | ||
| LTC3265MPDHC#PBF | 18-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3265MPDHC#TRPBF | 18-Lead DFN (5mm x 3mm w/ EP) | ||
| LTC3265MPFE#PBF | 20-Lead TSSOP w/ EP | ||
| LTC3265MPFE#TRPBF | 20-Lead TSSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LTC3265EDHC#PBF | PRODUCTION | |
| LTC3265EDHC#TRPBF | PRODUCTION | |
| LTC3265IFE#PBF | PRODUCTION | |
| LTC3265IFE#TRPBF | PRODUCTION | |
|
May 18, 2026 - 26_0072 Epoxy Change for Select TSSOP Products |
||
| LTC3265EFE#PBF | PRODUCTION | |
| LTC3265EFE#TRPBF | PRODUCTION | |
| LTC3265HFE#PBF | PRODUCTION | |
| LTC3265HFE#TRPBF | PRODUCTION | |
| LTC3265IFE#PBF | PRODUCTION | |
| LTC3265IFE#TRPBF | PRODUCTION | |
| LTC3265MPFE#PBF | PRODUCTION | |
| LTC3265MPFE#TRPBF | PRODUCTION | |
|
Feb 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LTC3265EFE#PBF | PRODUCTION | |
| LTC3265EFE#TRPBF | PRODUCTION | |
| LTC3265HDHC#PBF | PRODUCTION | |
| LTC3265HDHC#TRPBF | PRODUCTION | |
| LTC3265HFE#PBF | PRODUCTION | |
| LTC3265HFE#TRPBF | PRODUCTION | |
| LTC3265IDHC#PBF | PRODUCTION | |
| LTC3265IDHC#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL |
||
| LTC3265EFE#PBF | PRODUCTION | |
| LTC3265EFE#TRPBF | PRODUCTION | |
| LTC3265HFE#PBF | PRODUCTION | |
| LTC3265HFE#TRPBF | PRODUCTION | |
| LTC3265IFE#PBF | PRODUCTION | |
| LTC3265IFE#TRPBF | PRODUCTION | |
| LTC3265MPFE#PBF | PRODUCTION | |
| LTC3265MPFE#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| LDO Linear Regulators 1 | ||
| LT3032 Series | Dual 150mA Positive/Negative Low Noise Low Dropout Linear Regulator | |
| Switching Regulators & Controllers 1 | ||
| LT3095 | PRODUCTION | Dual-Channel Low Noise Bias Generators |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC3265
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.