Datasheet Linear Technology LTC3890-3
| Manufacturer | Linear Technology |
| Series | LTC3890-3 |
60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
Datasheets
Datasheet LTC3890-3
PDF, 1.3 Mb, Language: en, File uploaded: Sep 24, 2017, Pages: 40
60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
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Prices
Packaging
| LTC3890EGN-3#PBF | LTC3890EGN-3#TRPBF | LTC3890HGN-3#PBF | LTC3890HGN-3#TRPBF | LTC3890IGN-3#PBF | LTC3890IGN-3#TRPBF | LTC3890MPGN-3#PBF | LTC3890MPGN-3#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| N | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Package | SSOP-28 Package Outline Drawing | SSOP-28 Package Outline Drawing | SSOP-28 Package Outline Drawing | SSOP-28 Package Outline Drawing | SSOP-28 Package Outline Drawing | SSOP-28 Package Outline Drawing | SSOP-28 Package Outline Drawing | SSOP-28 Package Outline Drawing |
| Package Code | GN | GN | GN | GN | GN | GN | GN | GN |
| Package Index | 05-08-1641 (GN28) | 05-08-1641 (GN28) | 05-08-1641 (GN28) | 05-08-1641 (GN28) | 05-08-1641 (GN28) | 05-08-1641 (GN28) | 05-08-1641 (GN28) | 05-08-1641 (GN28) |
| Pin Count | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
Parametrics
| Parameters / Models | LTC3890EGN-3#PBF | LTC3890EGN-3#TRPBF | LTC3890HGN-3#PBF | LTC3890HGN-3#TRPBF | LTC3890IGN-3#PBF | LTC3890IGN-3#TRPBF | LTC3890MPGN-3#PBF | LTC3890MPGN-3#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 |
| Demo Boards | DC2299A-A | DC2299A-A | DC2299A-A | DC2299A-A | DC2299A-A | DC2299A-A | DC2299A-A | DC2299A-A |
| Design Tools | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model | LTspice File,LTpowerCAD Model |
| Export Control | no | no | no | no | no | no | no | no |
| Features | DCR Current Sense, Burst Mode, Resistor Set Frequency, External Synchronization, Tracking, Power Good | DCR Current Sense, Burst Mode, Resistor Set Frequency, External Synchronization, Tracking, Power Good | DCR Current Sense, Burst Mode, Resistor Set Frequency, External Synchronization, Tracking, Power Good | DCR Current Sense, Burst Mode, Resistor Set Frequency, External Synchronization, Tracking, Power Good | DCR Current Sense, Burst Mode, Resistor Set Frequency, External Synchronization, Tracking, Power Good | DCR Current Sense, Burst Mode, Resistor Set Frequency, External Synchronization, Tracking, Power Good | DCR Current Sense, Burst Mode, Resistor Set Frequency, External Synchronization, Tracking, Power Good | DCR Current Sense, Burst Mode, Resistor Set Frequency, External Synchronization, Tracking, Power Good |
| Frequency, kHz | 900 | 900 | 900 | 900 | 900 | 900 | 900 | 900 |
| 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 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
| Isupply, mA | 0.050 | 0.050 | 0.050 | 0.050 | 0.050 | 0.050 | 0.050 | 0.050 |
| 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 | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 85 | -55 to 125 | -55 to 125 |
| Output Current, A | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Output Current 2, A | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| 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 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Switch Current 2, A | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| 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 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
| Vin Min, V | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Vout Max, V | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Vout Maximum | 24V | 24V | 24V | 24V | 24V | 24V | 24V | 24V |
| Vout Min, V | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| Vout Min 2, V | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| Vref Accuracy Over Temp, % | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
Eco Plan
| LTC3890EGN-3#PBF | LTC3890EGN-3#TRPBF | LTC3890HGN-3#PBF | LTC3890HGN-3#TRPBF | LTC3890IGN-3#PBF | LTC3890IGN-3#TRPBF | LTC3890MPGN-3#PBF | LTC3890MPGN-3#TRPBF | |
|---|---|---|---|---|---|---|---|---|
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Model Line
Series: LTC3890-3 (8)
Manufacturer's Classification
- Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | Micropower Buck Regulators | High Input Voltage Buck | External Power Switch Buck Controllers
- Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators
