Datasheet Linear Technology LTC3858-2 — Datenblatt
| Hersteller | Linear Technology |
| Serie | LTC3858-2 |
Low I Q , doppelter synchroner 2-Phasen-Abwärtsregler
Datenblätter
Datasheet LTC3858-2
PDF, 448 Kb, Sprache: en, Datei hochgeladen: Sep 23, 2017, Seiten: 40
Low IQ, Dual 2-Phase Synchronous Step-Down Controller
Low IQ, Dual 2-Phase Synchronous Step-Down Controller
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Preise
Verpackung
| LTC3858EUH-2#PBF | LTC3858EUH-2#TRPBF | LTC3858IUH-2#PBF | LTC3858IUH-2#TRPBF | |
|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 |
| Package | 5x5 QFN-32 Paketumrisszeichnung | 5x5 QFN-32 Paketumrisszeichnung | 5x5 QFN-32 Paketumrisszeichnung | 5x5 QFN-32 Paketumrisszeichnung |
| Package Code | UH | UH | UH | UH |
| Package Index | 05-08-1693 | 05-08-1693 | 05-08-1693 | 05-08-1693 |
| Pin Count | 32 | 32 | 32 | 32 |
Parameter
| Parameters / Models | LTC3858EUH-2#PBF | LTC3858EUH-2#TRPBF | LTC3858IUH-2#PBF | LTC3858IUH-2#TRPBF |
|---|---|---|---|---|
| Architecture | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode |
| Design Tools | LTspice Model,LTpowerCAD Model | LTspice Model,LTpowerCAD Model | LTspice Model,LTpowerCAD Model | LTspice Model,LTpowerCAD Model |
| Export Control | no | no | no | no |
| Features | Burst Mode, Tracking, Resistor Set Frequency, External Synchronization, DCR Current Sense, Anti-Phase Switching, Power Good | Burst Mode, Tracking, Resistor Set Frequency, External Synchronization, DCR Current Sense, Anti-Phase Switching, Power Good | Burst Mode, Tracking, Resistor Set Frequency, External Synchronization, DCR Current Sense, Anti-Phase Switching, Power Good | Burst Mode, Tracking, Resistor Set Frequency, External Synchronization, DCR Current Sense, Anti-Phase Switching, Power Good |
| Frequency, kHz | 900 | 900 | 900 | 900 |
| Frequency Adjust Range | 50kHz - 900kHz | 50kHz - 900kHz | 50kHz - 900kHz | 50kHz - 900kHz |
| Frequency Sync Range | 75kHz - 850kHz | 75kHz - 850kHz | 75kHz - 850kHz | 75kHz - 850kHz |
| Integrated Inductor | no | no | no | no |
| Ishutdown, µA | 8 | 8 | 8 | 8 |
| Isupply, mA | 0.4 | 0.4 | 0.4 | 0.4 |
| Max Phases | 2 | 2 | 2 | 2 |
| Monolithic | no | no | no | no |
| Number of Outputs | 2 | 2 | 2 | 2 |
| Operating Temperature Range, °C | 0 to 85 | 0 to 85 | -40 to 85 | -40 to 85 |
| Output Current, A | 20 | 20 | 20 | 20 |
| Output Current 2, A | 20 | 20 | 20 | 20 |
| Polyphase | yes | yes | yes | yes |
| Sense Resistor | Rsense, DCR | Rsense, DCR | Rsense, DCR | Rsense, DCR |
| Switch Current, A | 25 | 25 | 25 | 25 |
| Switch Current 2, A | 25 | 25 | 25 | 25 |
| Synchronous | yes | yes | yes | yes |
| Topology | Buck | Buck | Buck | Buck |
| Topology 1 | Buck | Buck | Buck | Buck |
| Topology 2 | Buck | Buck | Buck | Buck |
| Vin Max, V | 38 | 38 | 38 | 38 |
| Vin Min, V | 4 | 4 | 4 | 4 |
| Vout Max, V | 24 | 24 | 24 | 24 |
| Vout Maximum | 24V | 24V | 24V | 24V |
| Vout Min, V | 0.8 | 0.8 | 0.8 | 0.8 |
| Vout Min 2, V | 0.8 | 0.8 | 0.8 | 0.8 |
| Vref Accuracy Over Temp, % | 1 | 1 | 1 | 1 |
Öko-Plan
| LTC3858EUH-2#PBF | LTC3858EUH-2#TRPBF | LTC3858IUH-2#PBF | LTC3858IUH-2#TRPBF | |
|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant |
Modellreihe
Serie: LTC3858-2 (4)
Herstellerklassifikation
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | External Power Switch Buck Controllers