LTC7806
RECOMMENDED FOR NEW DESIGNS40V, Low IQ, 3MHz, 2-Phase Synchronous Boost Controller
- Part Models
- 6
- 1ku List Price
- Starting From $4.88
Overview
- 2-Phase Operation Reduces Required Input and Output Capacitance and Power Supply Induced Noise
- Synchronous Operation for Highest Efficiency and Reduced Heat Dissipation
- Wide Input Voltage Range: 4.5V to 40V, Operates Down to 1V After Start-Up
- Output Voltage Up to 40V
- Low Operating Quiescent Current: 18μA
- PassThru™ Operation: 100% Duty Cycle Capability for Synchronous MOSFET
- RSENSE or Inductor DCR Current Sensing
- Spread Spectrum Operation
- Programmable Fixed Frequency (100kHz to 3MHz)
- Phase-Lockable Frequency (100kHz to 3MHz)
- Selectable Continuous, Pulse-Skipping, or Low Ripple Burst Mode® Operation at Light Loads
- Input Current Monitor Output
- Internal LDO Powers Gate Drive from VBIAS or EXTVCC
- Low Shutdown IQ: 1.5μA
- Side Wettable 28-Lead 4mm × 5mm QFN Package
- AEC-Q100 Qualified for Automotive Applications
The LTC7806 is a high performance 2-phase single output synchronous boost converter controller that drives two N-channel power MOSFET stages out-of-phase. Its constant-frequency current mode architecture allows a phase-lockable switching frequency of up to 3MHz. High frequency 2-phase operation reduces input and output capacitor requirements and allows the use of smaller inductors compared to the single-phase equivalent. Synchronous rectification increases efficiency, reduces power losses, and eases thermal requirements, simplifying high power boost applications. The synchronous PassThru capability also minimizes losses in automotive start-stop applications.
The LTC7806 operates from a wide 4.5V to 40V input supply range. When biased from the boost converter output, the LTC7806 can operate from an input supply as low as 1V after start-up. The very low no-load quiescent current extends operating run time in battery powered systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC7806 features a precision 1.2V reference, a power good output indicator, and an inductor current monitor.
Applications
- Automotive and Transportation
- Audio and RF Power Amplifiers
- Industrial and Medical
- Communications
Documentation
Data Sheet 1
User Guide 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 |
|---|---|---|---|
| LTC7806IUFDM#WPBF | 28-Lead QFN (4mm x 5mm, Plastic Side Wettable) | ||
| LTC7806IUFDM#WTRPBF | 28-Lead QFN (4mm x 5mm, Plastic Side Wettable) | ||
| LTC7806JUFDM#WPBF | 28-Lead QFN (4mm x 5mm, Plastic Side Wettable) | ||
| LTC7806JUFDM#WTRPBF | 28-Lead QFN (4mm x 5mm, Plastic Side Wettable) | ||
| LTC7806RUFDM#PBF | 28-Lead QFN (4mm x 5mm, Plastic Side Wettable) | ||
| LTC7806RUFDM#TRPBF | 28-Lead QFN (4mm x 5mm, Plastic Side Wettable) |
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:
- LTC7806
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
LTC7806 | 6V to 36V Input, 24V, 10A Output, Synchronous Boost Regulator with Input Current Monitor