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Manufacturer / Brand: AD
Details: High Efficiency Buck + VLDO Regulator
Series: LTC3541-2
Quantity Available: Over 35090 pieces

Datasheet for LTC3541-2:

LTC3541-2 datasheet
Price for LTC3541-2
Product Parameters
  • Manufacturer Part Number : LTC3541-2
  • Manufacturer : AD
  • Description : High Efficiency Buck + VLDO Regulator
  • Series : LTC3541-2
  • Reference Price : USD 1.512
  • 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 : LTC3541-2
  • Shipping methods : DHL FEDEX UPS TNT
  • Delivery Time : Ship within 1 day.
  • Manufacturer Production time : 6-8 weeks (Normally have stocks)
  • Weight : 0.001KG

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Related IC Components
Features and Benefits of LTC3541-2
Product Detailed Description for LTC3541-2

The LTC3541-2 combines a synchronous buck DC/DC converter with a very low dropout linear regulator (VLDOregulator) and internal feedback resistor networks to provide two output voltages from a single input voltage with minimal external components. When configured for dual output operation, the LTC3541-2’s auto start-up feature will bring the 1.875V buck output into regulation in a controlled manner, prior to enabling the 1.5V VLDO output without the need for external pin control. The 1.5V VLDO/linear regulator output prior to 1.875V buck output sequencing may also be obtained via external pin control. The input voltage range is ideally suited for Li-Ion battery applications powering sub-3.3V logic from 5V or 3.3V rails.

The synchronous buck converter provides a high efficiency output, typically 90%. It can provide up to 500mA of output current while switching at 2.25MHz, allowing the use of small surface mount inductors and capacitors. A mode select pin allows Burst Mode operation to be enabled for higher efficiency at light load currents, or disabled for lower noise, constant frequency operation.

The VLDO regulator provides a low noise, low voltage output capable of providing up to 300mA of output current using only a 2.2μF ceramic capacitor. The input supply voltage of the VLDO regulator (LVIN) may come from the buck regulator output or a separate supply.

Options Vout Switcher (V) Vout VLDO Auto Start Up Sequencing
LTC3541 Adj. down to 0.8V Adj. down to 0.4V Switcher, then VLDO
LTC3541-1 Adj. down to 0.8V Adj down to 0.4V VLDO, then switcher
LTC3541-2 1.875V fixed 1.5V fixed Switcher, then VLDO
LTC3541-3 1.8V fixed 1.575 fixed VLDO, then switcher

Applications

  • Digital Cameras
  • Cellular Phones
  • PC Cards
  • Wireless and DSL Modems
  • Other Portable Power Systems
Lifecycle information of LTC3541-2

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.

LTC3541-2 More photos
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