Datasheet for LTC3858-2:
- Manufacturer Part Number : LTC3858-2
- Manufacturer : AD
- Description : Low IQ, Dual 2-Phase Synchronous Step-Down Controller
- Series : LTC3858-2
- Reference Price : USD 3.2
- Our Price : We have a better price, contact us by email
- Product Type : Switching Regulators
- Function : Step-Down (Buck) Regulators
- Current Suggest : Recommended for New Designs
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : LTC3858-2
- 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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The LTC3858-2 is a high performance dual step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz. Power loss and noise due to the input capacitor ESR are minimized by operating the two controller outputs out of phase.
The 170μA no-load quiescent current extends operating life 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 LTC3858-2 differs from the LTC3858 by having the overvoltage protection crowbar and short-circuit latchoff disabled. A wide 4V to 38V input supply range encompasses a wide range of intermediate bus voltages and battery chemistries.
Independent soft-start pins for each controller ramp the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.
| LTC3858 | LTC3858-1 | LTC3858-2 | |
| Features | Adjustable Current Limit, Clock Output, Phase Modulation, 2 PGOOD Outputs | Fixed Current Limit, One PGOOD Output | Overvoltage protection crowbar and short-circuit latchoff disabled |
| Package | QFN-32 | SSOP-28 | QFN-32 |
Applications
- Automotive Systems
- Battery Operated Digital Devices
- Distributed DC Power Systems
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
