Datasheet for LTC3858:
- Manufacturer Part Number : LTC3858
- Manufacturer : AD
- Description : Low IQ, Dual 2-Phase Synchronous Step-Down Controller
- Series : LTC3858
- 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 : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : LTC3858
- 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 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 features a precision 0.8V reference and a power good output indicator. 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. The output latch-off feature protects the circuit in short-circuit conditions.
For a leaded 28-lead SSOP package with a fixed current limit and one PGOOD output, without phase modulation or a clock output, see the LTC3858-1 data sheet.
| 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
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.
