LTC1266
PRODUCTIONSynchronous Regulator Controller for N- or P-Channel MOSFETs
- Part Models
- 16
- 1ku List Price
- Starting From $6.33
Overview
- Ultrahigh Efficiency: Over 95% Possible
- Drives N-Channel MOSFET for High Current or P-Channel MOSFET for Low Dropout
- Pin Selectable Burst Mode Operation
- 1% Output Accuracy (LTC1266A)
- Pin Selectable Phase of Topside Driver for Boost or Step-Down Operation
- Wide VIN Range: 3.5V to 20V
- On-Chip Low-Battery Detector
- High Efficiency Maintained Over Large Current Range
- Low 170µA Standby Current at Light Loads
- Current Mode Operation for Excellent Line and Load Transient Response
- Logic Controlled Micropower Shutdown: IQ < 40µA
- Short-Circuit Protection
- Synchronous Switching with Nonoverlaping Gate Drives
- Available in 16-Pin Narrow SO Package
The LTC1266 series is a family of synchronous switching regulator controllers featuring automatic Burst Mode™ operation to maintain high efficiencies at low output currents. These devices drive external power MOSFETs at switching frequencies up to 400kHz using a constant off-time current mode architecture providing constant ripple current in the inductor. They can drive either an N-channel or a P-channel topside MOSFET.
The operating current level is user-programmable via an external current sense resistor. Wide input supply range allows operation from 3.5V to 18V (20V maximum). Constant off-time architecture provides low dropout regulation limited only by the RDS(ON) of the topside MOSFET (when using the P-channel) and the resistance of the inductor and current sense resistor.
The LTC1266 series combines synchronous switching for maximum efficiency at high currents with an automatic low current operating mode, called Burst Mode operation, which reduces switching losses. Standby power is reduced to only 1mW at VIN = 5V (at IOUT = 0). Load currents in Burst Mode operation are typically 0mA to 500mA.
Applications
- Notebook and Palmtop Computers
- Portable Instruments
- Cellular Telephones
- DC Power Distribution Systems
- GPS Systems
Documentation
Data Sheet 1
User Guide 1
Application Note 3
Design Note 2
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 |
|---|---|---|---|
| LTC1266ACS#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266ACS#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266AIS#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266AIS#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266CS#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266CS#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266CS-3.3#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266CS-3.3#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266CS-5#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266CS-5#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266IS#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266IS#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266IS-3.3#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266IS-3.3#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266IS-5#PBF | 16-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1266IS-5#TRPBF | 16-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LTC1266ACS#PBF | PRODUCTION | |
| LTC1266ACS#TRPBF | PRODUCTION | |
| LTC1266AIS#PBF | PRODUCTION | |
| LTC1266AIS#TRPBF | PRODUCTION | |
| LTC1266CS#PBF | PRODUCTION | |
| LTC1266CS#TRPBF | PRODUCTION | |
| LTC1266CS-3.3#PBF | PRODUCTION | |
| LTC1266CS-3.3#TRPBF | PRODUCTION | |
| LTC1266CS-5#PBF | PRODUCTION | |
| LTC1266CS-5#TRPBF | PRODUCTION | |
| LTC1266IS#PBF | PRODUCTION | |
| LTC1266IS#TRPBF | PRODUCTION | |
| LTC1266IS-3.3#PBF | PRODUCTION | |
| LTC1266IS-3.3#TRPBF | PRODUCTION | |
| LTC1266IS-5#PBF | PRODUCTION | |
| LTC1266IS-5#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0252 Epoxy Change from Henkel 8290 to 8290A for 16-Lead SOIC Package |
||
| LTC1266ACS#PBF | PRODUCTION | |
| LTC1266ACS#TRPBF | PRODUCTION | |
| LTC1266AIS#PBF | PRODUCTION | |
| LTC1266AIS#TRPBF | PRODUCTION | |
| LTC1266CS#PBF | PRODUCTION | |
| LTC1266CS#TRPBF | PRODUCTION | |
| LTC1266CS-3.3#PBF | PRODUCTION | |
| LTC1266CS-3.3#TRPBF | PRODUCTION | |
| LTC1266CS-5#PBF | PRODUCTION | |
| LTC1266CS-5#TRPBF | PRODUCTION | |
| LTC1266IS#PBF | PRODUCTION | |
| LTC1266IS#TRPBF | PRODUCTION | |
| LTC1266IS-3.3#PBF | PRODUCTION | |
| LTC1266IS-3.3#TRPBF | PRODUCTION | |
| LTC1266IS-5#PBF | PRODUCTION | |
| LTC1266IS-5#TRPBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0173 Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG] |
||
| LTC1266ACS#PBF | PRODUCTION | |
| LTC1266ACS#TRPBF | PRODUCTION | |
| LTC1266AIS#PBF | PRODUCTION | |
| LTC1266AIS#TRPBF | PRODUCTION | |
| LTC1266CS#PBF | PRODUCTION | |
| LTC1266CS#TRPBF | PRODUCTION | |
| LTC1266CS-3.3#PBF | PRODUCTION | |
| LTC1266CS-3.3#TRPBF | PRODUCTION | |
| LTC1266CS-5#PBF | PRODUCTION | |
| LTC1266CS-5#TRPBF | PRODUCTION | |
| LTC1266IS#PBF | PRODUCTION | |
| LTC1266IS#TRPBF | PRODUCTION | |
| LTC1266IS-3.3#PBF | PRODUCTION | |
| LTC1266IS-3.3#TRPBF | PRODUCTION | |
| LTC1266IS-5#PBF | PRODUCTION | |
| LTC1266IS-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:
- LTC1266
- LTC1266-3.3
- LTC1266-5
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
LTC1266CS | Switching Regulator, Pentium VR/VRE, 7A
Resources
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