Datasheet Linear Technology LTC3868-1 — Datenblatt
| Hersteller | Linear Technology |
| Serie | LTC3868-1 |
Low I Q , doppelter synchroner 2-Phasen-Abwärtsregler
Datenblätter
Datasheet LTC3868-1
PDF, 475 Kb, Sprache: en, Datei hochgeladen: Sep 24, 2017, Seiten: 38
Low IQ, Dual 2-Phase Synchronous Step-Down Controller
Low IQ, Dual 2-Phase Synchronous Step-Down Controller
Auszug aus dem Dokument
Preise
Verpackung
| LTC3868EGN-1#PBF | LTC3868EGN-1#TRPBF | LTC3868EUFD-1#PBF | LTC3868EUFD-1#TRPBF | LTC3868IGN-1#PBF | LTC3868IGN-1#TRPBF | LTC3868IUFD-1#PBF | LTC3868IUFD-1#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Package | SSOP-28 Paketumrisszeichnung | SSOP-28 Paketumrisszeichnung | 4x5 QFN-28 Paketumrisszeichnung | 4x5 QFN-28 Paketumrisszeichnung | SSOP-28 Paketumrisszeichnung | SSOP-28 Paketumrisszeichnung | 4x5 QFN-28 Paketumrisszeichnung | 4x5 QFN-28 Paketumrisszeichnung |
| Package Code | GN | GN | UFD | UFD | GN | GN | UFD | UFD |
| Package Index | 05-08-1641 (GN28) | 05-08-1641 (GN28) | 05-08-1712 | 05-08-1712 | 05-08-1641 (GN28) | 05-08-1641 (GN28) | 05-08-1712 | 05-08-1712 |
| Pin Count | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
Parameter
| Parameters / Models | LTC3868EGN-1#PBF | LTC3868EGN-1#TRPBF | LTC3868EUFD-1#PBF | LTC3868EUFD-1#TRPBF | LTC3868IGN-1#PBF | LTC3868IGN-1#TRPBF | LTC3868IUFD-1#PBF | LTC3868IUFD-1#TRPBF |
|---|---|---|---|---|---|---|---|---|
| Architecture | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | Constant Frequency Current Mode | 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 | LTspice Model,LTpowerCAD Model | LTspice Model,LTpowerCAD Model | LTspice Model,LTpowerCAD Model | LTspice Model,LTpowerCAD Model |
| Export Control | no | no | no | no | no | no | no | no |
| Features | Burst Mode, PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Power Good | Burst Mode, PolyPhase, DCR Current Sense, Resistor Set Frequency, External Synchronization, Power Good |
| Frequency, kHz | 850 | 850 | 850 | 850 | 850 | 850 | 850 | 850 |
| Frequency Adjust Range | 50kHz - 900kHz | 50kHz - 900kHz | 50kHz - 900kHz | 50kHz - 900kHz | 50kHz - 900kHz | 50kHz - 900kHz | 50kHz - 900kHz | 50kHz - 900kHz |
| Frequency Sync Range | 75kHz - 850kHz | 75kHz - 850kHz | 75kHz - 850kHz | 75kHz - 850kHz | 75kHz - 850kHz | 75kHz - 850kHz | 75kHz - 850kHz | 75kHz - 850kHz |
| Integrated Inductor | no | no | no | no | no | no | no | no |
| Ishutdown, µA | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 |
| Isupply, mA | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 | 0.17 |
| Max Phases | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Monolithic | no | no | no | no | no | no | no | no |
| Number of Outputs | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Operating Temperature Range, °C | 0 to 85 | 0 to 85 | 0 to 85 | 0 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
| Output Current, A | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Output Current 2, A | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Polyphase | yes | yes | yes | yes | yes | yes | yes | yes |
| Sense Resistor | Rsense, DCR | Rsense, DCR | Rsense, DCR | Rsense, DCR | Rsense, DCR | Rsense, DCR | Rsense, DCR | Rsense, DCR |
| Switch Current, A | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Switch Current 2, A | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Synchronous | yes | yes | yes | yes | yes | yes | yes | yes |
| Topology | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Topology 1 | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Topology 2 | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Vin Max, V | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Vin Min, V | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Vout Max, V | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
| Vout Maximum | 14V | 14V | 14V | 14V | 14V | 14V | 14V | 14V |
| Vout Min, V | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| Vout Min 2, V | .8 | .8 | .8 | .8 | .8 | .8 | .8 | .8 |
| Vref Accuracy Over Temp, % | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
Öko-Plan
| LTC3868EGN-1#PBF | LTC3868EGN-1#TRPBF | LTC3868EUFD-1#PBF | LTC3868EUFD-1#TRPBF | LTC3868IGN-1#PBF | LTC3868IGN-1#TRPBF | LTC3868IUFD-1#PBF | LTC3868IUFD-1#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Modellreihe
Serie: LTC3868-1 (8)
Herstellerklassifikation
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | Micropower Buck Regulators | External Power Switch Buck Controllers