Datasheet for LTC3809:
- Manufacturer Part Number : LTC3809
- Manufacturer : AD
- Description : No RSENSE™, Low EMI, Synchronous DC/DC Controller
- Series : LTC3809
- Reference Price : USD 2
- Our Price : We have a better price, contact us by email
- Product Type : Switching Regulators
- Function : Step-Down (Buck) Regulators
- Current Suggest : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : LTC3809
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
Contact us to check the best price and real time inventory quantity for LTC3809. If you need any more information about LTC3809, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
The LTC3809 is a synchronous step-down switching regulator controller that drives external complementary power MOSFETs using few external components. The constant frequency current mode architecture with MOSFET VDS sensing eliminates the need for a current sense resistor and improves efficiency.
For noise sensitive applications, the LTC3809 can be externally synchronized from 250kHz to 750kHz. Burst Mode is inhibited during synchronization or when the SYNC/MODE pin is pulled low to reduce noise and RF interference. To further reduce EMI, the LTC3809 incorporates a novel spread spectrum frequency modulation technique.
Burst Mode operation provides high efficiency operation at light loads. 100% duty cycle provides low dropout operation, extending operating time in battery-powered systems.
The switching frequency can be programmed up to 750kHz, allowing the use of small surface mount inductors and capacitors.
The LTC3809 is available in the tiny footprint thermally enhanced DFN and 10-lead MSOP packages.
| Features | Package | |
| LTC3809 | PLL, Selectable Spread Spectrum, Power Good | 3x3 DFN-10, MS-10E |
| LTC3809-1 | Tracking | 3x3 DFN-10, MS-10E |
| LTC3808 | PLL, Selectable Spread Spectrum, Tracking, Power Good | 4x3 DFN-14, SSOP-16 |
Applications
- 1- or 2-Cell Lithium-Ion Powered Devices
- Portable Instruments
- Distributed DC Power Systems
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
