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Manufacturer / Brand: AD
Details: Dual, 2-Phase Synchronous Step-Down Switching Controller
Series: LTC3850
Quantity Available: Over 71200 pieces

Datasheet for LTC3850:

LTC3850 datasheet
Price for LTC3850
Product Parameters
  • Manufacturer Part Number : LTC3850
  • Manufacturer : AD
  • Description : Dual, 2-Phase Synchronous Step-Down Switching Controller
  • Series : LTC3850
  • Reference Price : USD 1.92
  • 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 : LTC3850
  • 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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Features and Benefits of LTC3850
  • Dual, 180° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise
  • High Efficiency: Up to 95%
  • RSENSE or DCR Current Sensing
  • ±1% 0.8V Output Voltage Accuracy
  • Phase-Lockable Fixed Frequency 250kHz to 780kHz
  • Supports Pre-Biased Output
  • Dual N-Channel MOSFET Synchronous Drive
  • Wide VIN Range: 4V to 24V (30V for LTC3850I) Operation
  • Adjustable Soft-Start Current Ramping or Tracking
  • Foldback Output Current Limiting
  • Power Good Output Voltage Monitor
  • 28-Pin 4mm × 4mm, 4mm × 5mm QFN and Narrow SSOP Packages
  • AEC-Q100 Qualified for Automotive Applications
Product Detailed Description for LTC3850

The LTC3850 is a high performance dual synchronous step-down switching regulator controller that drives all N-channel power MOSFET stages. A constant-frequency current mode architecture allows a phase-lockable frequency of up to 780kHz. Power loss and supply noise are minimized by operating the two controller output stages out of phase.

OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3850 features a precision 0.8V reference and a power good output indicator. A wide 4V to 24V (28V maximum/30V for LTC3850I) input supply range encompasses most battery chemistries and intermediate bus voltages.

Independent TK/SS pins for each controller ramp the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The MODE/PLLIN pin selects among Burst Mode® operation, pulse-skipping mode, or continuous inductor current mode and allows the IC to be synchronized to an external clock.

The LTC3850 is available in low profile 28-pin 4mm × 4mm, 4mm × 5mm QFN and narrow SSOP packages.


Features
LTC3850 SSOP-28 and QFN-28 Packages
LTC3850-1 ILIM function replaced with an EXTVCC function, SSOP-28 package only
LTC3850-2 The LTC3850-2 is identical to the LTC3850-1 SSOP-28, except they have different pin-outs

Applications

  • Notebook and Palmtop Computers
  • Portable Instruments
  • Battery-Operated Digital Devices
  • DC Power Distribution Systems
Lifecycle information of LTC3850

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.

LTC3850 More photos
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