LTC3865EUH-1#TRPBF
ActiveDUAL, 2-PHASE SYNCHRONOUS DC/DC CONTROLLER WITH PIN SELECTABLE OUTPUTS
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LTC3865EUH-1#TRPBF
ActiveDUAL, 2-PHASE SYNCHRONOUS DC/DC CONTROLLER WITH PIN SELECTABLE OUTPUTS
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3865EUH-1#TRPBF |
|---|---|
| Clock Sync | False |
| Control Features | Soft Start, Enable, Frequency Control, Power Good, Tracking, Current Limit |
| Duty Cycle (Max) [Max] | 95 % |
| Frequency - Switching [Max] | 770 kHz |
| Frequency - Switching [Min] | 250 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Output Configuration | Positive |
| Output Phases | 2 |
| Output Type | Transistor Driver |
| Supplier Device Package | 32-QFN (5x5) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 38 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4.5 V |
LTC3865LTC3865-1 Series
Dual, 2-Phase Synchronous DC/DC Controller with Pin Selectable Outputs
| Part | Number of Outputs | Topology | Package / Case | Package / Case | Synchronous Rectifier | Duty Cycle (Max) [Max] | Frequency - Switching [Max] | Frequency - Switching [Min] | Function | Voltage - Supply (Vcc/Vdd) [Min] | Voltage - Supply (Vcc/Vdd) [Max] | Output Phases | Operating Temperature [Min] | Operating Temperature [Max] | Clock Sync | Mounting Type | Control Features | Supplier Device Package | Output Type | Output Configuration |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Analog Devices Inc./Maxim Integrated | 2 | Buck | 38-TFSOP Exposed Pad | 0.173 " 4.4 mm | 95 % | 770 kHz | 250 kHz | Step-Down | 4.5 V | 38 V | 2 | -40 C | 125 °C | Surface Mount | Current Limit Enable Frequency Control Power Good Soft Start Tracking | 38-TSSOP-EP | Transistor Driver | Positive | ||
 Analog Devices Inc./Maxim Integrated | 2 | Buck | 95 % | 770 kHz | 250 kHz | Step-Down | 4.5 V | 38 V | 2 | -40 C | 125 °C | Surface Mount | Current Limit Enable Frequency Control Power Good Soft Start Tracking | 32-QFN (5x5) | Transistor Driver | Positive | ||||
 Analog Devices Inc./Maxim Integrated | 2 | Buck | 95 % | 770 kHz | 250 kHz | Step-Down | 4.5 V | 38 V | 2 | -40 C | 125 °C | Surface Mount | Current Limit Enable Frequency Control Power Good Soft Start Tracking | 32-QFN (5x5) | Transistor Driver | Positive | ||||
Analog Devices Inc./Maxim Integrated | 2 | Buck | 95 % | 770 kHz | 250 kHz | Step-Down | 4.5 V | 38 V | 2 | -40 C | 125 °C | Surface Mount | Current Limit Enable Frequency Control Power Good Soft Start Tracking | 32-QFN (5x5) | Transistor Driver | Positive | ||||
Analog Devices Inc./Maxim Integrated | 2 | Buck | 38-TFSOP Exposed Pad | 0.173 " 4.4 mm | 95 % | 770 kHz | 250 kHz | Step-Down | 4.5 V | 38 V | 2 | -40 C | 125 °C | Surface Mount | Current Limit Enable Frequency Control Power Good Soft Start Tracking | 38-TSSOP-EP | Transistor Driver | Positive | ||
Analog Devices Inc./Maxim Integrated | 2 | Buck | 95 % | 770 kHz | 250 kHz | Step-Down | 4.5 V | 38 V | 2 | -40 C | 125 °C | Surface Mount | Current Limit Enable Frequency Control Power Good Soft Start Tracking | 32-QFN (5x5) | Transistor Driver | Positive | ||||
Analog Devices Inc./Maxim Integrated | 2 | Buck | 95 % | 770 kHz | 250 kHz | Step-Down | 4.5 V | 38 V | 2 | -40 C | 125 °C | Surface Mount | Current Limit Enable Frequency Control Power Good Soft Start Tracking | 32-QFN (5x5) | Transistor Driver | Positive | ||||
Analog Devices Inc./Maxim Integrated | 2 | Buck | 95 % | 770 kHz | 250 kHz | Step-Down | 4.5 V | 38 V | 2 | -40 C | 125 °C | Surface Mount | Current Limit Enable Frequency Control Power Good Soft Start Tracking | 32-QFN (5x5) | Transistor Driver | Positive | ||||
 Analog Devices Inc./Maxim Integrated | 2 | Buck | 38-TFSOP Exposed Pad | 0.173 " 4.4 mm | 95 % | 770 kHz | 250 kHz | Step-Down | 4.5 V | 38 V | 2 | -40 C | 125 °C | Surface Mount | Current Limit Enable Frequency Control Power Good Soft Start Tracking | 38-TSSOP-EP | Transistor Driver | Positive | ||
Analog Devices Inc./Maxim Integrated | 2 | Buck | 95 % | 770 kHz | 250 kHz | Step-Down | 4.5 V | 38 V | 2 | -40 C | 125 °C | Surface Mount | Current Limit Enable Frequency Control Power Good Soft Start Tracking | 32-QFN (5x5) | Transistor Driver | Positive |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | Updated |
|---|---|---|---|---|
| Digikey | N/A | 0 | $ 3.99 | 1m+ |
Description
General part information
LTC3865LTC3865-1 Series
The LTC3865/LTC3865-1 are high performance dual synchronous step-down DC/DC switching regulator controllers that drive all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 770kHz. Power loss and noise are minimized by operating the two controller output stages out of phase.OPTI-LOOP®compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. Independent track/soft-start pins for each controller ramp the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The MODE/PLLIN pin selects among Burst Mode®operation, pulse-skipping mode, and continuous inductor current mode. The output voltages can be precisely programmed by pin strapping or external resistors.The LTC3865/LTC3865-1 are available in low profile (5mm × 5mm) 32-pin QFN and 38-Lead thermally enhanced TSSOP packages.ApplicationsDC Power Distribution Systems
Documents
Technical documentation and resources